144 results on '"Hamilton, Timothy"'
Search Results
2. Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations
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Zavala, Jorge A., Buat, Veronique, Casey, Caitlin M., Burgarella, Denis, Finkelstein, Steven L., Bagley, Micaela B., Ciesla, Laure, Daddi, Emanuele, Dickinson, Mark, Ferguson, Henry C., Franco, Maximilien, Jim'enez-Andrade, E. F., Kartaltepe, Jeyhan S., Koekemoer, Anton M., Bail, Aurélien Le, Murphy, E. J., Papovich, Casey, Tacchella, Sandro, Wilkins, Stephen M., Aretxaga, Itziar, Behroozi, Peter, Champagne, Jaclyn B., Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Grogin, Norman A., Kewley, Lisa J., Kocevski, Dale D., Kirkpatrick, Allison, Lotz, Jennifer M., Pentericci, Laura, Perez-Gonzalez, Pablo G., Pirzkal, Nor, Ravindranath, Swara, Somerville, Rachel S., Trump, Jonathan R., Yang, Guang, Yung, L. Y. Aaron, Almaini, Omar, Amorin, Ricardo O., Annunziatella, Marianna, Haro, Pablo Arrabal, Backhaus, Bren E., Barro, Guillermo, Bell, Eric F., Bhatawdekar, Rachana, Bisigello, Laura, Buitrago, Fernando, Calabro, Antonello, Castellano, Marco, Ortiz, Oscar A. Chavez, Chworowsky, Katherine, Cleri, Nikko J., Cohen, Seth H., Cole, Justin W., Cooke, Kevin C., Cooper, M. C., Cooray, Asantha R., Costantin, Luca, Cox, Isabella G., Croton, Darren, Dave, Romeel, de la Vega, Alexander, Dekel, Avishai, Elbaz, David, Estrada-Carpenter, Vicente, Fernández, Vital, Finkelstein, Keely D., Freundlich, Jonathan, Fujimoto, Seiji, García-Argumánez, Ángela, Gardner, Jonathan P., Gawiser, Eric, Gómez-Guijarro, Carlos, Guo, Yuchen, Hamilton, Timothy S., Hathi, Nimish P., Holwerda, Benne W., Hirschmann, Michaela, Huertas-Company, Marc, Hutchison, Taylor A., Iyer, Kartheik G., Jaskot, Anne E., Jha, Saurabh W., Jogee, Shardha, Juneau, Stéphanie, Jung, Intae, Kassin, Susan A., Kurczynski, Peter, Larson, Rebecca L., Leung, Gene C. K., Long, Arianna, Lucas, Ray A., Magnelli, Benjamin, Mantha, Kameswara Bharadwaj, Matharu, Jasleen, McGrath, Elizabeth J., McIntosh, Daniel H., Medrano, Aubrey, Merlin, Emiliano, Mobasher, Bahram, Morales, Alexa M., Newman, Jeffrey A., Nicholls, David C., Pandya, Viraj, Rafelski, Marc, Ronayne, Kaila, Rose, Caitlin, Ryan Jr., Russell E., Santini, Paola, Seillé, Lise-Marie, Shah, Ekta A., Shen, Lu, Simons, Raymond C., Snyder, Gregory F., Stanway, Elizabeth R., Straughn, Amber N., Teplitz, Harry I., Vanderhoof, Brittany N., Vega-Ferrero, Jesús, Wang, Weichen, Weiner, Benjamin J., Willmer, Christopher N. A., and Wuyts, Stijn
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Astrophysics - Astrophysics of Galaxies - Abstract
Lyman Break Galaxy (LBG) candidates at z>10 are rapidly being identified in JWST/NIRCam observations. Due to the (redshifted) break produced by neutral hydrogen absorption of rest-frame UV photons, these sources are expected to drop out in the bluer filters while being well detected in redder filters. However, here we show that dust-enshrouded star-forming galaxies at lower redshifts (z<7) may also mimic the near-infrared (near-IR) colors of z>10 LBGs, representing potential contaminants in LBG candidate samples. First, we analyze CEERS-DSFG-1, a NIRCam dropout undetected in the F115W and F150W filters but detected at longer wavelengths. Combining the JWST data with (sub)millimeter constraints, including deep NOEMA interferometric observations, we show that this source is a dusty star-forming galaxy (DSFG) at z~5.1. We also present a tentative 2.6sigma SCUBA-2 detection at 850um around a recently identified z~16 LBG candidate in the same field and show that, if the emission is real and associated with this candidate, the available photometry is consistent with a z~5 dusty galaxy with strong nebular emission lines despite its blue near-IR colors. Further observations on this candidate are imperative to mitigate the low confidence of this tentative submillimeter emission and its positional uncertainty. Our analysis shows that robust (sub)millimeter detections of NIRCam dropout galaxies likely imply z=4-6 redshift solutions, where the observed near-IR break would be the result of a strong rest-frame optical Balmer break combined with high dust attenuation and strong nebular line emission, rather than the rest-frame UV Lyman break. This provides evidence that DSFGs may contaminate searches for ultra high-redshift LBG candidates from JWST observations., Comment: Published in The Astrophysical Journal Letters (updated to match the published version)
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- 2022
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3. A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ~ 12 Galaxy in Early JWST CEERS Imaging
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Finkelstein, Steven L., Bagley, Micaela B., Haro, Pablo Arrabal, Dickinson, Mark, Ferguson, Henry C., Kartaltepe, Jeyhan S., Papovich, Casey, Burgarella, Denis, Kocevski, Dale D., Huertas-Company, Marc, Iyer, Kartheik G., Larson, Rebecca L., Pérez-González, Pablo G., Rose, Caitlin, Tacchella, Sandro, Wilkins, Stephen M., Chworowsky, Katherine, Medrano, Aubrey, Morales, Alexa M., Somerville, Rachel S., Yung, L. Y. Aaron, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Grogin, Norman A., Kewley, Lisa J., Koekemoer, Anton M., Kirkpatrick, Allison, Kurczynski, Peter, Lotz, Jennifer M., Pentericci, Laura, Pirzkal, Nor, Ravindranath, Swara, Ryan Jr., Russell E., Trump, Jonathan R., Yang, Guang, Almaini, Omar, Amorín, Ricardo O., Annunziatella, Marianna, Backhaus, Bren E., Barro, Guillermo, Behroozi, Peter, Bell, Eric F., Bhatawdekar, Rachana, Bisigello, Laura, Bromm, Volker, Buat, Véronique, Buitrago, Fernando, Calabró, Antonello, Casey, Caitlin M., Castellano, Marco, Ortiz, Óscar A. Chávez, Ciesla, Laure, Cleri, Nikko J., Cohen, Seth H., Cole, Justin W., Cooke, Kevin C., Cooper, M. C., Cooray, Asantha R., Costantin, Luca, Cox, Isabella G., Croton, Darren, Daddi, Emanuele, Davé, Romeel, de la Vega, Alexander, Dekel, Avishai, Elbaz, David, Estrada-Carpenter, Vicente, Faber, Sandra M., Fernández, Vital, Finkelstein, Keely D., Freundlich, Jonathan, Fujimoto, Seiji, García-Argumánez, Ángela, Gardner, Jonathan P., Gawiser, Eric, Gómez-Guijarro, Carlos, Guo, Yuchen, Hamilton, Timothy S., Hathi, Nimish P., Holwerda, Benne W., Hirschmann, Michaela, Hutchison, Taylor A., Jaskot, Anne, Jha, Saurabh W., Jogee, Shardha, Juneau, Stéphanie, Jung, Intae, Kassin, Susan A., Bail, Aurélien Le, Leung, Gene C. K., Lucas, Ray A., Magnelli, Benjamin, Mantha, Kameswara Bharadwaj, Matharu, Jasleen, McGrath, Elizabeth J., McIntosh, Daniel H., Merlin, Emiliano, Mobasher, Bahram, Newman, Jeffrey A., Nicholls, David C., Pandya, Viraj, Rafelski, Marc, Ronayne, Kaila, Santini, Paola, Seillé, Lise-Marie, Shah, Ekta A., Shen, Lu, Simons, Raymond C., Snyder, Gregory F., Stanway, Elizabeth R., Straughn, Amber N., Teplitz, Harry I., Vanderhoof, Brittany N., Vega-Ferrero, Jesús, Wang, Weichen, Weiner, Benjamin J., Willmer, Christopher N. A., Wuyts, Stijn, and Zavala, Jorge A.
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Astrophysics - Astrophysics of Galaxies - Abstract
We report the discovery of a candidate galaxy with a photo-z of z~12 in the first epoch of the JWST Cosmic Evolution Early Release Science (CEERS) Survey. Following conservative selection criteria we identify a source with a robust z_phot = 11.8^+0.3_-0.2 (1-sigma uncertainty) with m_F200W=27.3, and >7-sigma detections in five filters. The source is not detected at lambda < 1.4um in deep imaging from both HST and JWST, and has faint ~3-sigma detections in JWST F150W and HST F160W, which signal a Ly-alpha break near the red edge of both filters, implying z~12. This object (Maisie's Galaxy) exhibits F115W-F200W > 1.9 mag (2-sigma lower limit) with a blue continuum slope, resulting in 99.6% of the photo-z PDF favoring z > 11. All data quality images show no artifacts at the candidate's position, and independent analyses consistently find a strong preference for z > 11. Its colors are inconsistent with Galactic stars, and it is resolved (r_h = 340 +/- 14 pc). Maisie's Galaxy has log M*/Msol ~ 8.5 and is highly star-forming (log sSFR ~ -8.2 yr^-1), with a blue rest-UV color (beta ~ -2.5) indicating little dust though not extremely low metallicity. While the presence of this source is in tension with most predictions, it agrees with empirical extrapolations assuming UV luminosity functions which smoothly decline with increasing redshift. Should followup spectroscopy validate this redshift, our Universe was already aglow with galaxies less than 400 Myr after the Big Bang., Comment: 17 pages, 6 figures, 3 tables, ApJL in press. Summary of changes from original submission: Improvements in astrometry generated a weak detection in F150W that reduces the photo-z to 11.8 but does not increase the likelihood of lower-z solutions. A full discussion of changes from the original version is available at: https://web.corral.tacc.utexas.edu/ceersdata/papers/Maisie_update.pdf
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- 2022
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4. Enhanced rare-earth separation with a metal-sensitive lanmodulin dimer
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Mattocks, Joseph A., Jung, Jonathan J., Lin, Chi-Yun, Dong, Ziye, Yennawar, Neela H., Featherston, Emily R., Kang-Yun, Christina S., Hamilton, Timothy A., Park, Dan M., Boal, Amie K., and Cotruvo, Jr, Joseph A.
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- 2023
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5. Hamilton's Object -- a clumpy galaxy straddling the gravitational caustic of a galaxy cluster : Constraints on dark matter clumping
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Griffiths, Richard E., Rudisel, Mitchell, Wagner, Jenny, Hamilton, Timothy, Huang, Po-Chieh, and Villforth, Carolin
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Astrophysics - Cosmology and Nongalactic Astrophysics ,Astrophysics - Astrophysics of Galaxies - Abstract
We report the discovery of a 'folded' gravitationally lensed image, 'Hamilton's Object', found in a HST image of the field near the AGN SDSS J223010.47-081017.8 ($z=0.62$). The lensed images are sourced by a galaxy at a spectroscopic redshift of 0.8200$\pm0.0005$ and form a fold configuration on a caustic caused by a foreground galaxy cluster at a photometric redshift of 0.526$\pm0.018$ seen in the corresponding Pan-STARRS PS1 image and marginally detected as a faint ROSAT All-Sky Survey X-ray source. The lensed images exhibit properties similar to those of other folds where the source galaxy falls very close to or straddles the caustic of a galaxy cluster. The folded images are stretched in a direction roughly orthogonal to the critical curve, but the configuration is that of a tangential cusp. Guided by morphological features, published simulations and similar fold observations in the literature, we identify a third or counter-image, confirmed by spectroscopy. Because the fold-configuration shows highly distinctive surface brightness features, follow-up observations of microlensing or detailed investigations of the individual surface brightness features at higher resolution can further shed light on kpc-scale dark matter properties. We determine the local lens properties at the positions of the multiple images according to the observation-based lens reconstruction of Wagner et al. (2019). The analysis is in accordance with a mass density which hardly varies on an arc-second scale (6 kpc) over the areas covered by the multiple images., Comment: 20 pages, 15 figures, 4 tables, accepted for publication in MNRAS
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- 2021
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6. Observations of the gamma-ray emitting narrow-line Seyfert 1, SBS 0846+513, and its host galaxy
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Hamilton, Timothy S., Berton, Marco, Antón, Sonia, Busoni, Lorenzo, Caccianiga, Alessandro, Ciroi, Stefano, Gässler, Wolfgang, Georgiev, Iskren, Järvelä, Emilia, Komossa, S., Mathur, Smita, and Rabien, Sebastian
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Astrophysics - Astrophysics of Galaxies - Abstract
The gamma-ray emitting galaxy SBS 0846+513 has been classified as a Narrow-Line Seyfert 1 from its spectroscopy, and on that basis it was thought likely to have a small central black hole hosted in a spiral galaxy. But very few of the gamma-ray Narrow-Line Seyfert 1s have high-resolution imaging of their hosts, so it is unknown how those expectations hold up for the gamma-emitting class. We have observed this galaxy in the J-band with the Large Binocular Telescope's LUCI1 camera and the ARGOS adaptive optics system. We estimate its black hole mass to lie between $7.70 \leq \log \frac{\text{M}}{\text{M}_\odot} \leq 8.19$, using the correlation with bulge luminosity, or $7.96 \leq \log \frac{\text{M}}{\text{M}_\odot} \leq 8.16$ using the correlation with S\'{e}rsic index, putting its mass at the high end of the Narrow Line Seyfert 1 range. These estimates are independent of the Broad Line Region viewing geometry and avoid underestimates due to looking down the jet axis. Its host shows evidence of a bulge + disc structure, both from two-dimensional modeling and isophote shape, in keeping with the expectations. Mergers and interactions appear to be common among the gamma-ray Narrow-Line Seyfert 1s, and we see some circumstantial evidence for companion galaxies or disturbed features in the host., Comment: 10 pages, 6 figures. Submitted to MNRAS
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- 2020
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7. Siting noxious facilities: Efficiency and majority rule decisions
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Hamilton, Timothy L. and Eynan, Amit
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- 2023
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8. A study of the circum-galactic medium at z ~ 0.6 using DLA-galaxies
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Rahmani, Hadi, Peroux, Celine, Turnshek, David A., Rao, Sandhya M., Quiret, Samuel, Hamilton, Timothy S., Kulkarni, Varsha P., and Monier, Eric M.
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Astrophysics - Astrophysics of Galaxies ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We present the study of a sample of nine QSO fields, with damped-Ly-alpha (DLA) or sub-DLA systems at z~0.6, observed with the X-Shooter spectrograph at the Very Large Telescope. By suitably positioning the X-Shooter slit based on high spatial resolution images of HST/ACS we are able to detect absorbing galaxies in 7 out of 9 fields (~ 78\% success rate) at impact parameters from 10 to 30 kpc. In 5 out of 7 fields the absorbing galaxies are confirmed via detection of multiple emission lines at the redshift of DLAs where only 1 out of 5 also emits a faint continuum. In 2 out of these 5 fields we detect a second galaxy at the DLA redshift. Extinction corrected star formation rates (SFR) of these DLA-galaxies, estimated using their H-alpha fluxes, are in the range 0.3-6.7 M_sun yr^-1. The emission metallicities of these five DLA-galaxies are estimated to be from 0.2 to 0.9 Z_sun. Based on the Voigt profile fits to absorption lines we find the metallicity of the absorbing neutral gas to be in a range of 0.05--0.6 Z_sun. The two remaining DLA-galaxies are quiescent galaxies with SFR < 0.4 M_sun yr^-1 (3-sigma) presenting continuum emission but weak or no emission lines. Using X-Shooter spectrum we estimate i-band absolute magnitude of -19.5+/-0.2 for both these DLA-galaxies that indicates they are sub-L* galaxies. Comparing our results with that of other surveys in the literature we find a possible redshift evolution of the SFR of DLA-galaxies., Comment: MNRAS accepted
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- 2016
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9. 64 Are holistic needs assessments (HNA) being consistently implemented in adult cancer clinical practice?
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Mann, Mala, primary, Hamilton, Timothy, additional, Byrne, Anthony, additional, Sivell, Stephanie, additional, Baddeley, Elin, additional, and Retzer, Ameeta, additional
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- 2024
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10. Novel metrics reveal new structure and unappreciated heterogeneity in Caenorhabditis elegans development
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Natesan, Gunalan, primary, Hamilton, Timothy, additional, Deeds, Eric J., additional, and Shah, Pavak K., additional
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- 2023
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11. 18: Utilizing Extracorporeal Membrane Oxygenation to successfully bridge to secure a definite airway in a patient with head and neck malignancy
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Gale, Michael, primary, Patel, Spandan, additional, Tavares, Joaquim, additional, Wills, Robert, additional, Lopez, Daisyrose, additional, Hamilton, Timothy, additional, Osman, Ashraf, additional, and Ho, Liawaty, additional
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- 2023
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12. The amenity value of natural views
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Hamilton, Timothy L., primary and Johnson, Erik B., additional
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- 2023
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13. Thirty-six New, High-Probability, Damped Ly-alpha Absorbers at Redshift 0.42 < z < 0.70
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Turnshek, David A., Monier, Eric M., Rao, Sandhya M., Hamilton, Timothy S., Sardane, Gendith M., and Held, Ryan
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Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
Quasar damped Ly-alpha (DLA) absorption line systems with redshifts z<1.65 are used to trace neutral gas over approximately 70 per cent of the most recent history of the Universe. However, such systems fall in the UV and are rarely found in blind UV spectroscopic surveys. Therefore, it has been difficult to compile a moderate-sized sample of UV DLAs in any narrow cosmic time interval. However, DLAs are easy to identify in low-resolution spectra because they have large absorption rest equivalent widths. We have performed an efficient strong-MgII-selected survey for UV DLAs at redshifts z=[0.42,0.70] using HST's low-resolution ACS-HRC-PR200L prism. This redshift interval covers ~1.8 Gyr in cosmic time, i.e., t~[7.2,9.0] Gyrs after the Big Bang. A total of 96 strong MgII absorption-line systems identified in SDSS spectra were successfully observed with the prism at the predicted UV wavelengths of Ly-alpha absorption. We found that 35 of the 96 systems had a significant probability of being DLAs. One additional observed system could be a very high N(HI) DLA (N(HI)~2x10^22 atoms cm^-2 or possibly higher), but since very high N(HI) systems are extremely rare, it would be unusual for this system to be a DLA given the size of our sample. Here we present information on our prism sample, including our best estimates of N(HI) and errors for the 36 systems fitted with damped Ly-alpha profiles. This list is valuable for future follow-up studies of low-redshift DLAs in a small redshift interval, although such work would clearly benefit from improved UV spectroscopy to more accurately determine their neutral hydrogen column densities., Comment: Accepted for publication in MNRAS
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- 2014
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14. Morphologies of low-redshift AGN host galaxies: what role does AGN luminosity play?
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Villforth, Carolin, Hamann, Fred, Koekemoer, Anton, Rosario, David, Hamilton, Timothy, McGrath, Elizabeth J., van der Wel, Arjen, Chang, YuYen, Guo, Yicheng, and collaboration, CANDELS
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Astrophysics - Cosmology and Extragalactic Astrophysics - Abstract
Mergers of galaxies have been suspected to be a major trigger of AGN activity for many years. However, when compared to carefully matched control samples, AGN host galaxies often show no enhanced signs of interaction. A common explanation for this lack of observed association between AGN and mergers has often been that while mergers are of importance for triggering AGN, they only dominate at the very high luminosity end of the AGN population. In this study, we compare the morphologies of AGN hosts to a carefully matched control sample and particularly study the role of AGN luminosity. We find no enhanced merger rates in AGN hosts and also find no trend for stronger signs of disturbance at higher AGN luminosities. While this study does not cover very high luminosity AGN, we can exclude a strong connection between AGN and mergers over a wide range of AGN luminosities and therefore for a large part of the AGN population., Comment: Proceedings of the conference "Nuclei of Seyfert galaxies and QSOs - Central engine & conditions of star formation" held in Bonn, Germany, 2012
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- 2013
15. Loan purpose and accounting based debt covenants
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Paik, Daniel Gyung, Hamilton, Timothy, Lee, Brandon Byunghwan, and Yoon, Sung Wook
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- 2019
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16. Quasar Radio-Loudness and the Elliptical Core Problem
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Hamilton, Timothy S.
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Astrophysics - Cosmology and Extragalactic Astrophysics - Abstract
The dichotomy between radio-loud and radio-quiet QSOs is not simply one of host morphology. While spiral galaxies almost exclusively host radio-quiet QSOs, ellipticals can host either radio-louds or radio-quiets. We find that a combination of accretion rate and host scale determines which type of QSO a given elliptical galaxy will host. QSOs with high x-ray luminosities (above 10^44.5 erg/s at 0.5 keV) are mostly radio-loud. But those with low luminosities divide fairly neatly in size (measured by the half-light radius, r_e). Those larger than about 10 kpc are radio-loud, while smaller ones are radio-quiet. It has recently been found that core and coreless ellipticals are also divided near this limit. This implies that for low-luminosity QSOs, radio-louds are found in core ellipticals, while radio-quiets are in coreless ellipticals and spirals. This segregation also shows up strongly for low-redshift objects, and in general, there is a loss over time of coreless, radio-loud QSOs. Since the presence or absence of a core may be tied to the galactic merger history, we have an evolutionary explanation for the differences between radio-loud and radio-quiet QSOs., Comment: 8 pages, 4 figures. To be published in MNRAS
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- 2010
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17. The Fundamental Plane of QSOs and the Relationship Between Host and Nucleus
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Hamilton, Timothy S., Casertano, Stefano, and Turnshek, David A.
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Astrophysics - Abstract
We present results from an archival study of 70 medium-redshift QSOs observed with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. The QSOs have magnitudes M_V <= -23 (total nuclear plus host light) and redshifts $0.06 <= z <= 0.46$. The aim of the present study is to investigate the connections between the nuclear and host properties of QSOs, using high-resolution images and removing the central point source to reveal the host structure. We confirm that more luminous QSO nuclei are found in more luminous host galaxies. Using central black hole masses from the literature, we find that nuclear luminosity also generally increases with black hole mass, but it is not tightly correlated. Nuclear luminosities range from 2.3% to 200% of the Eddington limit. Those in elliptical hosts cover the range fairly evenly, while those in spirals are clustered near the Eddington limit. Using a principal components analysis, we find a kind of fundamental plane relating the nuclear luminosity to the size and effective surface magnitude of the bulge. Using optical nuclear luminosity, this relationship explains 96.1% of the variance in the overall sample, while another version of the relationship uses x-ray nuclear luminosity and explains 95.2% of the variance. The form of this QSO fundamental plane shows similarities to the well-studied fundamental plane of elliptical galaxies, and we examine the possible relationship between them as well as the difficulties involved in establishing this connection., Comment: 49 pages, 6 figures. Accepted by ApJ
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- 2008
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18. The Fundamental Plane of Quasars
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Hamilton, Timothy S., Casertano, Stefano, and Turnshek, David A.
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Astrophysics - Abstract
We present results from an archival study of 70 medium-redshift QSOs observed with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. The QSOs have magnitudes M_V < -23 (total nuclear plus host light) and redshifts 0.06 < z < 0.46. A close relationship between QSO host and nucleus is found by examining multiple parameters at once. A principal components analysis shows that 3 nuclear and host properties are related in a kind of fundamental plane: nuclear luminosity and the size and effective surface magnitude of the bulge. Using optical nuclear luminosity, this relationship explains 95.9% of the variance in the overall sample, while 94.9% of the variance is accounted for if we use x-ray nuclear luminosity. The form of this QSO fundamental plane shows similarities to the well-studied fundamental plane of elliptical galaxies, and we examine the possible relationship between them as well as the difficulties involved in establishing this connection. The key to the relationship might lie in the fueling mechanism of the central black hole., Comment: 6 pages, 2 figures, TeX uses elsart.cls, from workshop "QSO Host Galaxies: Evolution and Environment" (Univ. Leiden, Aug. 22-26, 2005)
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- 2005
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19. Bicycle infrastructure and traffic congestion: Evidence from DC's Capital Bikeshare
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Hamilton, Timothy L. and Wichman, Casey J.
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- 2018
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20. Nearby quasar remnants and ultra-high energy cosmic rays
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Torres, Diego F., Boldt, Elihu, Hamilton, Timothy, and Loewenstein, Michael
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Astrophysics ,High Energy Physics - Phenomenology - Abstract
As recently suggested, nearby quasar remnants are plausible sites of black-hole based compact dynamos that could be capable of accelerating ultra-high energy cosmic rays (UHECRs). In such a model, UHECRs would originate at the nuclei of nearby dead quasars, those in which the putative underlying supermassive black holes are suitably spun-up. Based on galactic optical luminosity, morphological type, and redshift, we have compiled a small sample of nearby objects selected to be highly luminous, bulge-dominated galaxies, likely quasar remnants. The sky coordinates of these galaxies were then correlated with the arrival directions of cosmic rays detected at energies $> 40$ EeV. An apparently significant correlation appears in our data. This correlation appears at closer angular scales than those expected when taking into account the deflection caused by typically assumed IGM or galactic magnetic fields over a charged particle trajectory. Possible scenarios producing this effect are discussed, as is the astrophysics of the quasar remnant candidates. We suggest that quasar remnants be also taken into account in the forthcoming detailed search for correlations using data from the Auger Observatory., Comment: 2 figures, 4 tables, 11 pages. Final version to appear in Physical Review D
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- 2002
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21. The Luminosity Function of QSO Host Galaxies
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Hamilton, Timothy S., Casertano, Stefano, and Turnshek, David A.
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Astrophysics - Abstract
We present some results from our HST archival image study of 71 QSO host galaxies. The objects are selected to have z < 0.46 and total absolute magnitude M_V < -23 (H_0=50 km/s/Mpc). This initial study investigates host morphology and radio loudness, and it derives the QSO host galaxy luminosity function. We have analyzed available WFPC2 broad band images, using a uniform set of procedures. The host galaxies span a narrow range of luminosities and are exceptionally bright, much more so than normal galaxies, usually L > L*_V. The QSOs are almost equally divided among radio-loud QSOs with elliptical hosts, radio-quiet QSOs with elliptical hosts, and radio-quiet QSOs with spiral hosts. Using a weighting procedure, we derive the combined luminosity function of QSO host galaxies. We find that the luminosity function of QSO hosts differs in shape from that of normal galaxies but that they coincide at the highest luminosities. The ratio of the number of quasar hosts to the number of normal galaxies at a luminosity L_V is R = [L_V/(11.48 L*_V)]^2.46, where L*_V corresponds to M*_V = -22.35, and a QSO is defined to be an object with total nuclear plus host light M_V < -23. This ratio can be interpreted as the probability that a galaxy with luminosity L_V will host a QSO at redshift z ~ 0.26. (Abridged), Comment: 36 pages, 11 figures, LaTeX. Expanded analysis and additional figures. To be published in the Astrophysical Journal, v576, September 1, 2002
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- 2000
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22. A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ∼ 12 Galaxy in Early JWST CEERS Imaging
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Finkelstein, Steven L., Bagley, Micaela B., Haro, Pablo Arrabal, Dickinson, Mark, Ferguson, Henry C., Kartaltepe, Jeyhan S., Papovich, Casey, Burgarella, Denis, Kocevski, Dale D., Huertas-Company, Marc, Iyer, Kartheik G., Koekemoer, Anton M., Larson, Rebecca L., Pérez-González, Pablo G., Rose, Caitlin, Tacchella, Sandro, Wilkins, Stephen M., Chworowsky, Katherine, Medrano, Aubrey, Morales, Alexa M., Somerville, Rachel S., Yung, L. Y. Aaron, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Grogin, Norman A., Kewley, Lisa J., Kirkpatrick, Allison, Kurczynski, Peter, Lotz, Jennifer M., Pentericci, Laura, Pirzkal, Nor, Ravindranath, Swara, Ryan, Russell E., Jr., Trump, Jonathan R., Yang, Guang, and The CEERS Team, Almaini, Omar, Amorín, Ricardo O., Annunziatella, Marianna, Backhaus, Bren E., Barro, Guillermo, Behroozi, Peter, Bell, Eric F., Bhatawdekar, Rachana, Bisigello, Laura, Bromm, Volker, Buat, Véronique, Buitrago, Fernando, Calabrò, Antonello, Casey, Caitlin M., Castellano, Marco, Chávez Ortiz, Óscar A., Ciesla, Laure, Cleri, Nikko J., Cohen, Seth H., Cole, Justin W., Cooke, Kevin C., Cooper, M. C., Cooray, Asantha R., Costantin, Luca, Cox, Isabella G., Croton, Darren, Daddi, Emanuele, Davé, Romeel, de la Vega, Alexander, Dekel, Avishai, Elbaz, David, Estrada-Carpenter, Vicente, Faber, Sandra M., Fernández, Vital, Finkelstein, Keely D., Freundlich, Jonathan, Fujimoto, Seiji, García-Argumánez, Ángela, Gardner, Jonathan P., Gawiser, Eric, Gómez-Guijarro, Carlos, Guo, Yuchen, Hamblin, Kurt, Hamilton, Timothy S., Hathi, Nimish P., Holwerda, Benne W., Hirschmann, Michaela, Hutchison, Taylor A., Jaskot, Anne E., Jha, Saurabh W., Jogee, Shardha, Juneau, Stéphanie, Jung, Intae, Kassin, Susan A., Bail, Aurélien Le, Leung, Gene C. K., Lucas, Ray A., Magnelli, Benjamin, Mantha, Kameswara Bharadwaj, Matharu, Jasleen, McGrath, Elizabeth J., McIntosh, Daniel H., Merlin, Emiliano, Mobasher, Bahram, Newman, Jeffrey A., Nicholls, David C., Pandya, Viraj, Rafelski, Marc, Ronayne, Kaila, Santini, Paola, Seillé, Lise-Marie, Shah, Ekta A., Shen, Lu, Simons, Raymond C., Snyder, Gregory F., Stanway, Elizabeth R., Straughn, Amber N., Teplitz, Harry I., Vanderhoof, Brittany N., Vega-Ferrero, Jesús, Wang, Weichen, Weiner, Benjamin J., Willmer, Christopher N. A., Wuyts, Stijn, Zavala, Jorge A., Finkelstein, Steven L. [0000-0001-8519-1130], Bagley, Micaela B. [0000-0002-9921-9218], Haro, Pablo Arrabal [0000-0002-7959-8783], Dickinson, Mark [0000-0001-5414-5131], Ferguson, Henry C. [0000-0001-7113-2738], Kartaltepe, Jeyhan S. [0000-0001-9187-3605], Papovich, Casey [0000-0001-7503-8482], Burgarella, Denis [0000-0002-4193-2539], Kocevski, Dale D. [0000-0002-8360-3880], Huertas-Company, Marc [0000-0002-1416-8483], Iyer, Kartheik G. [0000-0001-9298-3523], Koekemoer, Anton M. [0000-0002-6610-2048], Larson, Rebecca L. [0000-0003-2366-8858], Pérez-González, Pablo G. [0000-0003-4528-5639], Rose, Caitlin [0000-0002-8018-3219], Tacchella, Sandro [0000-0002-8224-4505], Wilkins, Stephen M. [0000-0003-3903-6935], Chworowsky, Katherine [0000-0003-4922-0613], Morales, Alexa M. [0000-0003-4965-0402], Somerville, Rachel S. [0000-0002-6748-6821], Yung, L. Y. Aaron [0000-0003-3466-035X], Fontana, Adriano [0000-0003-3820-2823], Giavalisco, Mauro [0000-0002-7831-8751], Grazian, Andrea [0000-0002-5688-0663], Grogin, Norman A. [0000-0001-9440-8872], Kewley, Lisa J. [0000-0001-8152-3943], Kirkpatrick, Allison [0000-0002-1306-1545], Kurczynski, Peter [0000-0002-8816-5146], Lotz, Jennifer M. [0000-0003-3130-5643], Pentericci, Laura [0000-0001-8940-6768], Pirzkal, Nor [0000-0003-3382-5941], Ravindranath, Swara [0000-0002-5269-6527], Ryan, Russell E., Jr. [0000-0003-0894-1588], Trump, Jonathan R. [0000-0002-1410-0470], Yang, Guang [0000-0001-8835-7722], Almaini, Omar [0000-0001-9328-3991], Amorín, Ricardo O. [0000-0001-5758-1000], Annunziatella, Marianna [0000-0002-8053-8040], Backhaus, Bren E. [0000-0001-8534-7502], Behroozi, Peter [0000-0002-2517-6446], Bell, Eric F. [0000-0002-5564-9873], Bhatawdekar, Rachana [0000-0003-0883-2226], Bisigello, Laura [0000-0003-0492-4924], Bromm, Volker [0000-0003-0212-2979], Buat, Véronique [0000-0003-3441-903X], Buitrago, Fernando [0000-0002-2861-9812], Calabrò, Antonello [0000-0003-2536-1614], Casey, Caitlin M. [0000-0002-0930-6466], Castellano, Marco [0000-0001-9875-8263], Chávez Ortiz, Óscar A. [0000-0003-2332-5505], Ciesla, Laure [0000-0003-0541-2891], Cleri, Nikko J. [0000-0001-7151-009X], Cohen, Seth H. [0000-0003-3329-1337], Cole, Justin W. [0000-0002-6348-1900], Cooke, Kevin C. [0000-0002-2200-9845], Cooper, M. C. [0000-0003-1371-6019], Cooray, Asantha R. [0000-0002-3892-0190], Costantin, Luca [0000-0001-6820-0015], Cox, Isabella G. [0000-0002-1803-794X], Croton, Darren [0000-0002-5009-512X], Daddi, Emanuele [0000-0002-3331-9590], Davé, Romeel [0000-0003-2842-9434], de la Vega, Alexander [0000-0002-6219-5558], Dekel, Avishai [0000-0003-4174-0374], Elbaz, David [0000-0002-7631-647X], Estrada-Carpenter, Vicente [0000-0001-8489-2349], Fernández, Vital [0000-0003-0531-5450], Finkelstein, Keely D. [0000-0003-0792-5877], Freundlich, Jonathan [0000-0002-5245-7796], Fujimoto, Seiji [0000-0001-7201-5066], García-Argumánez, Ángela [0000-0002-8365-5525], Gardner, Jonathan P. [0000-0003-2098-9568], Gawiser, Eric [0000-0003-1530-8713], Gómez-Guijarro, Carlos [0000-0002-4085-9165], Guo, Yuchen [0000-0002-4162-6523], Hamblin, Kurt [0000-0002-6292-4589], Hamilton, Timothy S. [0000-0002-9753-1769], Hathi, Nimish P. [0000-0001-6145-5090], Holwerda, Benne W. [0000-0002-4884-6756], Hirschmann, Michaela [0000-0002-3301-3321], Hutchison, Taylor A. [0000-0001-6251-4988], Jaskot, Anne E. [0000-0002-6790-5125], Jha, Saurabh W. [0000-0001-8738-6011], Jogee, Shardha [0000-0002-1590-0568], Juneau, Stéphanie [0000-0002-0000-2394], Jung, Intae [0000-0003-1187-4240], Kassin, Susan A. [0000-0002-3838-8093], Bail, Aurélien Le [0000-0002-9466-2763], Leung, Gene C. K. [0000-0002-9393-6507], Lucas, Ray A. [0000-0003-1581-7825], Magnelli, Benjamin [0000-0002-6777-6490], Matharu, Jasleen [0000-0002-7547-3385], McGrath, Elizabeth J. [0000-0001-8688-2443], Merlin, Emiliano [0000-0001-6870-8900], Newman, Jeffrey A. [0000-0001-8684-2222], Nicholls, David C. [0000-0003-0892-5203], Pandya, Viraj [0000-0002-2499-9205], Rafelski, Marc [0000-0002-9946-4731], Ronayne, Kaila [0000-0001-5749-5452], Santini, Paola [0000-0002-9334-8705], Seillé, Lise-Marie [0000-0001-7755-4755], Shah, Ekta A. [0000-0001-7811-9042], Shen, Lu [0000-0001-9495-7759], Simons, Raymond C. [0000-0002-6386-7299], Snyder, Gregory F. [0000-0002-4226-304X], Stanway, Elizabeth R. [0000-0002-8770-809X], Straughn, Amber N. [0000-0002-4772-7878], Teplitz, Harry I. [0000-0002-7064-5424], Vanderhoof, Brittany N. [0000-0002-8163-0172], Vega-Ferrero, Jesús [0000-0003-2338-5567], Wang, Weichen [0000-0002-9593-8274], Weiner, Benjamin J. [0000-0001-6065-7483], Willmer, Christopher N. A. [0000-0001-9262-9997], Wuyts, Stijn [0000-0003-3735-1931], and Apollo - University of Cambridge Repository
- Subjects
Galaxies and Cosmology - Abstract
We report the discovery of a candidate galaxy with a photo-z of z ∼ 12 in the first epoch of the James Webb Space Telescope (JWST) Cosmic Evolution Early Release Science Survey. Following conservative selection criteria, we identify a source with a robust z phot = 11.8−0.2+0.3 (1σ uncertainty) with m F200W = 27.3 and ≳7σ detections in five filters. The source is not detected at λ < 1.4 μm in deep imaging from both Hubble Space Telescope (HST) and JWST and has faint ∼3σ detections in JWST F150W and HST F160W, which signal a Lyα break near the red edge of both filters, implying z ∼ 12. This object (Maisie’s Galaxy) exhibits F115W − F200W > 1.9 mag (2σ lower limit) with a blue continuum slope, resulting in 99.6% of the photo-z probability distribution function favoring z > 11. All data-quality images show no artifacts at the candidate’s position, and independent analyses consistently find a strong preference for z > 11. Its colors are inconsistent with Galactic stars, and it is resolved (r h = 340 ± 14 pc). Maisie’s Galaxy has log M */M ⊙ ∼ 8.5 and is highly star-forming (log sSFR ∼ −8.2 yr−1), with a blue rest-UV color (β ∼ −2.5) indicating little dust, though not extremely low metallicity. While the presence of this source is in tension with most predictions, it agrees with empirical extrapolations assuming UV luminosity functions that smoothly decline with increasing redshift. Should follow-up spectroscopy validate this redshift, our universe was already aglow with galaxies less than 400 Myr after the Big Bang.
- Published
- 2022
23. Human Wellness in the Cape Fear River Basin Based on CAFO Data
- Author
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Hamilton, Timothy, primary, Sahin, Elif, additional, Ayers, Andrew, additional, Cossifos, Alexander, additional, Dogan, Gulustan, additional, and Moore, Eric, additional
- Published
- 2023
- Full Text
- View/download PDF
24. p19ARF Targets Certain E2F Species for Degradation
- Author
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Martelli, Fabio, Hamilton, Timothy, Silver, Daniel P., Sharpless, Norman E., Bardeesy, Nabeel, Rokas, Mihail, DePinho, Ronald A., Livingston, David M., and Grossman, Steven R.
- Published
- 2001
25. Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations
- Author
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Zavala, Jorge A., primary, Buat, Véronique, additional, Casey, Caitlin M., additional, Finkelstein, Steven L., additional, Burgarella, Denis, additional, Bagley, Micaela B., additional, Ciesla, Laure, additional, Daddi, Emanuele, additional, Dickinson, Mark, additional, Ferguson, Henry C., additional, Franco, Maximilien, additional, Jiménez-Andrade, E. F., additional, Kartaltepe, Jeyhan S., additional, Koekemoer, Anton M., additional, Bail, Aurélien Le, additional, Murphy, E. J., additional, Papovich, Casey, additional, Tacchella, Sandro, additional, Wilkins, Stephen M., additional, Aretxaga, Itziar, additional, Behroozi, Peter, additional, Champagne, Jaclyn B., additional, Fontana, Adriano, additional, Giavalisco, Mauro, additional, Grazian, Andrea, additional, Grogin, Norman A., additional, Kewley, Lisa J., additional, Kocevski, Dale D., additional, Kirkpatrick, Allison, additional, Lotz, Jennifer M., additional, Pentericci, Laura, additional, Pérez-González, Pablo G., additional, Pirzkal, Nor, additional, Ravindranath, Swara, additional, Somerville, Rachel S., additional, Trump, Jonathan R., additional, Yang, Guang, additional, Yung, L. Y. Aaron, additional, Almaini, Omar, additional, Amorín, Ricardo O., additional, Annunziatella, Marianna, additional, Haro, Pablo Arrabal, additional, Backhaus, Bren E., additional, Barro, Guillermo, additional, Bell, Eric F., additional, Bhatawdekar, Rachana, additional, Bisigello, Laura, additional, Buitrago, Fernando, additional, Calabrò, Antonello, additional, Castellano, Marco, additional, Chávez Ortiz, Óscar A., additional, Chworowsky, Katherine, additional, Cleri, Nikko J., additional, Cohen, Seth H., additional, Cole, Justin W., additional, Cooke, Kevin C., additional, Cooper, M. C., additional, Cooray, Asantha R., additional, Costantin, Luca, additional, Cox, Isabella G., additional, Croton, Darren, additional, Davé, Romeel, additional, de la Vega, Alexander, additional, Dekel, Avishai, additional, Elbaz, David, additional, Estrada-Carpenter, Vicente, additional, Fernández, Vital, additional, Finkelstein, Keely D., additional, Freundlich, Jonathan, additional, Fujimoto, Seiji, additional, García-Argumánez, Ángela, additional, Gardner, Jonathan P., additional, Gawiser, Eric, additional, Gómez-Guijarro, Carlos, additional, Guo, Yuchen, additional, Hamilton, Timothy S., additional, Hathi, Nimish P., additional, Holwerda, Benne W., additional, Hirschmann, Michaela, additional, Huertas-Company, Marc, additional, Hutchison, Taylor A., additional, Iyer, Kartheik G., additional, Jaskot, Anne E., additional, Jha, Saurabh W., additional, Jogee, Shardha, additional, Juneau, Stéphanie, additional, Jung, Intae, additional, Kassin, Susan A., additional, Kurczynski, Peter, additional, Larson, Rebecca L., additional, Leung, Gene C. K., additional, Long, Arianna S., additional, Lucas, Ray A., additional, Magnelli, Benjamin, additional, Mantha, Kameswara Bharadwaj, additional, Matharu, Jasleen, additional, McGrath, Elizabeth J., additional, McIntosh, Daniel H., additional, Medrano, Aubrey, additional, Merlin, Emiliano, additional, Mobasher, Bahram, additional, Morales, Alexa M., additional, Newman, Jeffrey A., additional, Nicholls, David C., additional, Pandya, Viraj, additional, Rafelski, Marc, additional, Ronayne, Kaila, additional, Rose, Caitlin, additional, Ryan, Russell E., additional, Santini, Paola, additional, Seillé, Lise-Marie, additional, Shah, Ekta A., additional, Shen, Lu, additional, Simons, Raymond C., additional, Snyder, Gregory F., additional, Stanway, Elizabeth R., additional, Straughn, Amber N., additional, Teplitz, Harry I., additional, Vanderhoof, Brittany N., additional, Vega-Ferrero, Jesús, additional, Wang, Weichen, additional, Weiner, Benjamin J., additional, Willmer, Christopher N. A., additional, and Wuyts, Stijn, additional
- Published
- 2023
- Full Text
- View/download PDF
26. Siting noxious facilities: Efficiency and majority rule decisions
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Hamilton, Timothy L., primary and Eynan, Amit, additional
- Published
- 2022
- Full Text
- View/download PDF
27. A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ∼ 12 Galaxy in Early JWST CEERS Imaging
- Author
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Finkelstein, Steven L., primary, Bagley, Micaela B., additional, Haro, Pablo Arrabal, additional, Dickinson, Mark, additional, Ferguson, Henry C., additional, Kartaltepe, Jeyhan S., additional, Papovich, Casey, additional, Burgarella, Denis, additional, Kocevski, Dale D., additional, Huertas-Company, Marc, additional, Iyer, Kartheik G., additional, Koekemoer, Anton M., additional, Larson, Rebecca L., additional, Pérez-González, Pablo G., additional, Rose, Caitlin, additional, Tacchella, Sandro, additional, Wilkins, Stephen M., additional, Chworowsky, Katherine, additional, Medrano, Aubrey, additional, Morales, Alexa M., additional, Somerville, Rachel S., additional, Yung, L. Y. Aaron, additional, Fontana, Adriano, additional, Giavalisco, Mauro, additional, Grazian, Andrea, additional, Grogin, Norman A., additional, Kewley, Lisa J., additional, Kirkpatrick, Allison, additional, Kurczynski, Peter, additional, Lotz, Jennifer M., additional, Pentericci, Laura, additional, Pirzkal, Nor, additional, Ravindranath, Swara, additional, Ryan, Russell E., additional, Trump, Jonathan R., additional, Yang, Guang, additional, Almaini, Omar, additional, Amorín, Ricardo O., additional, Annunziatella, Marianna, additional, Backhaus, Bren E., additional, Barro, Guillermo, additional, Behroozi, Peter, additional, Bell, Eric F., additional, Bhatawdekar, Rachana, additional, Bisigello, Laura, additional, Bromm, Volker, additional, Buat, Véronique, additional, Buitrago, Fernando, additional, Calabrò, Antonello, additional, Casey, Caitlin M., additional, Castellano, Marco, additional, Chávez Ortiz, Óscar A., additional, Ciesla, Laure, additional, Cleri, Nikko J., additional, Cohen, Seth H., additional, Cole, Justin W., additional, Cooke, Kevin C., additional, Cooper, M. C., additional, Cooray, Asantha R., additional, Costantin, Luca, additional, Cox, Isabella G., additional, Croton, Darren, additional, Daddi, Emanuele, additional, Davé, Romeel, additional, de la Vega, Alexander, additional, Dekel, Avishai, additional, Elbaz, David, additional, Estrada-Carpenter, Vicente, additional, Faber, Sandra M., additional, Fernández, Vital, additional, Finkelstein, Keely D., additional, Freundlich, Jonathan, additional, Fujimoto, Seiji, additional, García-Argumánez, Ángela, additional, Gardner, Jonathan P., additional, Gawiser, Eric, additional, Gómez-Guijarro, Carlos, additional, Guo, Yuchen, additional, Hamblin, Kurt, additional, Hamilton, Timothy S., additional, Hathi, Nimish P., additional, Holwerda, Benne W., additional, Hirschmann, Michaela, additional, Hutchison, Taylor A., additional, Jaskot, Anne E., additional, Jha, Saurabh W., additional, Jogee, Shardha, additional, Juneau, Stéphanie, additional, Jung, Intae, additional, Kassin, Susan A., additional, Bail, Aurélien Le, additional, Leung, Gene C. K., additional, Lucas, Ray A., additional, Magnelli, Benjamin, additional, Mantha, Kameswara Bharadwaj, additional, Matharu, Jasleen, additional, McGrath, Elizabeth J., additional, McIntosh, Daniel H., additional, Merlin, Emiliano, additional, Mobasher, Bahram, additional, Newman, Jeffrey A., additional, Nicholls, David C., additional, Pandya, Viraj, additional, Rafelski, Marc, additional, Ronayne, Kaila, additional, Santini, Paola, additional, Seillé, Lise-Marie, additional, Shah, Ekta A., additional, Shen, Lu, additional, Simons, Raymond C., additional, Snyder, Gregory F., additional, Stanway, Elizabeth R., additional, Straughn, Amber N., additional, Teplitz, Harry I., additional, Vanderhoof, Brittany N., additional, Vega-Ferrero, Jesús, additional, Wang, Weichen, additional, Weiner, Benjamin J., additional, Willmer, Christopher N. A., additional, Wuyts, Stijn, additional, and Zavala, Jorge A., additional
- Published
- 2022
- Full Text
- View/download PDF
28. Using AI to Predict Caregiver Ability to Self-Manage Chronic Illness When Caring For Children With Special Health Care Needs
- Author
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Rayle, Jordan, primary, Hamilton, Timothy, additional, Poosapati, Priyanka, additional, Dogan, Gulustan, additional, and Mendes, Michele, additional
- Published
- 2022
- Full Text
- View/download PDF
29. Airborne pollution and progressive atrophic rhinitis in pigs
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Hamilton, Timothy David Conrad
- Subjects
636.089 ,Respiratory diseases in livestock - Published
- 1995
30. An integrated model of regional and local residential sorting with application to air quality
- Author
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Hamilton, Timothy L. and Phaneuf, Daniel J.
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- 2015
- Full Text
- View/download PDF
31. A lack of distinct cell identities in single-cell measurements: revisiting Waddington’s landscape
- Author
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Sparta, Breanne, primary, Hamilton, Timothy, additional, Hughes, Serena, additional, Natesan, Gunalan, additional, and Deeds, Eric J., additional
- Published
- 2022
- Full Text
- View/download PDF
32. Amenity values of proximity to National Wildlife Refuges: An analysis of urban residential property values
- Author
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Liu, Xiangping, Taylor, Laura O., Hamilton, Timothy L., and Grigelis, Peter E.
- Published
- 2013
- Full Text
- View/download PDF
33. ¿Es posible la gobernanza ambiental?
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Torres Álvarez, Martha Marisol, primary and Trench Hamilton, Timothy Roderick, additional
- Published
- 2021
- Full Text
- View/download PDF
34. Binomial models uncover biological variation during feature selection of droplet-based single-cell RNA sequencing
- Author
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Sparta, Breanne, primary, Hamilton, Timothy, additional, Aragones, Samuel D., additional, and Deeds, Eric J., additional
- Published
- 2021
- Full Text
- View/download PDF
35. Hamilton’s Object – a clumpy galaxy straddling the gravitational caustic of a galaxy cluster: constraints on dark matter clumping
- Author
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Griffiths, Richard E, primary, Rudisel, Mitchell, additional, Wagner, Jenny, additional, Hamilton, Timothy, additional, Huang, Po-Chieh, additional, and Villforth, Carolin, additional
- Published
- 2021
- Full Text
- View/download PDF
36. Observations of the γ-ray-emitting narrow-line Seyfert 1, SBS 0846+513, and its host galaxy
- Author
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Hamilton, Timothy S, primary, Berton, Marco, additional, Antón, Sonia, additional, Busoni, Lorenzo, additional, Caccianiga, Alessandro, additional, Ciroi, Stefano, additional, Gässler, Wolfgang, additional, Georgiev, Iskren Y, additional, Järvelä, Emilia, additional, Komossa, S, additional, Mathur, Smita, additional, and Rabien, Sebastian, additional
- Published
- 2021
- Full Text
- View/download PDF
37. The fundamental plane of quasars
- Author
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Hamilton, Timothy S., Casertano, Stefano, and Turnshek, David A.
- Published
- 2006
- Full Text
- View/download PDF
38. Lung preservation solution substrate composition affects rat lung oxidative metabolism during hypothermic storage
- Author
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Peltz, Matthias, Hamilton, Timothy T., He, Tian-Teng, Adams, Glenn A., IV, Koshy, Seena, Burgess, Shawn C., Chao, Robert Y., Jessen, Michael E., and Meyer, Dan M.
- Published
- 2005
- Full Text
- View/download PDF
39. Peptic Ulcer Disease
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Hamilton, Timothy, primary and Rege, Robert, additional
- Published
- 2004
- Full Text
- View/download PDF
40. Gastrectomy
- Author
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Hamilton, Timothy, primary and Rege, Robert, additional
- Published
- 2004
- Full Text
- View/download PDF
41. FC20: Virtual Reality in Palliative Care Teaching - Results of a longitudinal survey study
- Author
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Taubert, Mark, Webber, Lucy, Hamilton, Timothy, Carr, Madeleine, Hapgood, Glenn, Harvey, Mark, Patel, Mitali, and Daisley-Devoy, Tara
- Abstract
Background: Virtual reality immersive environments have been shown to be effective in medical teaching. Our university hospital received funding from our deanery to film teaching videos with a 360 degree camera.\ud \ud Aims: Evaluate whether Virtual Reality is an effective teaching environment. Virtual Reality headsets were set up for medical students who rotated through Velindre Cancer Hospital’s Palliative Care department.\ud \ud Methods: Students watched a 27 minute video on nausea & vomiting in palliative care settings in a virtual tutorial space. They subsequently viewed a radiotherapy treatment experience.\ud \ud Results: Of the 72 medical students who participated, 70 found the experience comfortable, with 2 students stating they found it uncomfortable (tight headset, blurry visuals). Numerical scoring on ability to concentrate in VR from 0-10 (0=worst, 10=best) scored an average of\ud 8.44 (range 7-10). Asked whether this format suited their learning style, average score was 8.31 (range 6-10). 97.2% (n=70) students stated that they would recommend this form of learning to a colleague, with 1 student saying he/she would not recommend and 1 student stating he/she was unsure. Students left positive & negative free text comments which helped frame future needs in this emerging area and will be presented.\ud \ud Discussion: This study indicates that there is room for exploring new ways of delivering teaching and expanding it more widely in palliative care, but also provides feedback on areas that need further careful attention. Comments from students included: “Might have been the novelty factor but I learned more from this 20 minute VR thing than I have from many lectures”\ud \ud Summary: The project has proved so popular in medical student feedback that the VR experience is now available on Youtube & has been expanded to routine teaching. It has been viewed worldwide incl Africa, so this format of teaching could prove valuable and promising in its potential for global reach.
- Published
- 2019
42. St. John's Wood mass : SATB, organ
- Author
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Hamilton, Timothy, 1973- composer.
- Published
- 2013
43. St. John's Wood Mass : Unison
- Author
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Hamilton, Timothy, 1973-
- Published
- 2013
44. I Will Lift Up Mine Eyes
- Author
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Hamilton, Timothy, 1973-
- Published
- 2013
45. When to the Temple Mary Went
- Author
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Hamilton, Timothy, 1973-
- Published
- 2013
46. Crucifixus
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Hamilton, Timothy, 1973-
- Published
- 2013
47. Ave Verum
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Hamilton, Timothy, 1973-
- Published
- 2012
48. Insurance.
- Author
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Hamilton, Timothy
- Subjects
Insurance law -- Interpretation and construction - Published
- 1994
49. Criminal procedure.
- Author
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Hamilton, Timothy D.
- Subjects
Criminal procedure -- Surveys - Published
- 1993
50. Criminal law.
- Author
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Hamilton, Timothy D.
- Subjects
Criminal law -- Surveys - Published
- 1993
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