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Your search keyword '"Weaver, JR [0000-0003-1614-196X]"' showing total 3 results
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3 results on '"Weaver, JR [0000-0003-1614-196X]"'

1. Two Remarkably Luminous Galaxy Candidates at z ≈ 10-12 Revealed by JWST

Author

Rohan P. Naidu, Pascal A. Oesch, Pieter van Dokkum, Erica J. Nelson, Katherine A. Suess, Gabriel Brammer, Katherine E. Whitaker, Garth Illingworth, Rychard Bouwens, Sandro Tacchella, Jorryt Matthee, Natalie Allen, Rachel Bezanson, Charlie Conroy, Ivo Labbe, Joel Leja, Ecaterina Leonova, Dan Magee, Sedona H. Price, David J. Setton, Victoria Strait, Mauro Stefanon, Sune Toft, John R. Weaver, Andrea Weibel, Naidu, RP [0000-0003-3997-5705], Oesch, PA [0000-0001-5851-6649], Dokkum, PV [0000-0002-8282-9888], Nelson, EJ [0000-0002-7524-374X], Suess, KA [0000-0002-1714-1905], Brammer, G [0000-0003-2680-005X], Whitaker, KE [0000-0001-7160-3632], Illingworth, G [0000-0002-8096-2837], Bouwens, R [0000-0002-4989-2471], Tacchella, S [0000-0002-8224-4505], Matthee, J [0000-0003-2871-127X], Allen, N [0000-0001-9610-7950], Bezanson, R [0000-0001-5063-8254], Conroy, C [0000-0002-1590-8551], Labbe, I [0000-0002-2057-5376], Leja, J [0000-0001-6755-1315], Leonova, E [0000-0002-5757-4334], Magee, D [0000-0002-6668-2011], Price, SH [0000-0002-0108-4176], Setton, DJ [0000-0003-4075-7393], Strait, V [0000-0002-6338-7295], Stefanon, M [0000-0001-7768-5309], Toft, S [0000-0003-3631-7176], Weaver, JR [0000-0003-1614-196X], Weibel, A [0000-0001-8928-4465], Apollo - University of Cambridge Repository, Swiss National Science Foundation, National Aeronautics and Space Administration (US), and Danish National Research Foundation

Subjects
DECOMPOSITION, II, Early universe, FOS: Physical sciences, PROPAGATION, Galaxies and Cosmology, UNCERTAINTIES, Galaxy evolution, Galaxy formation, TO 8, REIONIZATION, MASSIVE GALAXIES, Astronomy and Astrophysics, BRIGHT END, Astrophysics - Astrophysics of Galaxies, EVOLUTION, STELLAR, Space and Planetary Science, 5101 Astronomical Sciences, Astrophysics of Galaxies (astro-ph.GA), High-redshift galaxies, James Webb Space Telescope, 51 Physical Sciences
Abstract

The first few 100 Myr at z > 10 mark the last major uncharted epoch in the history of the universe, where only a single galaxy (GN-z11 at z ≈ 11) is currently spectroscopically confirmed. Here we present a search for luminous z > 10 galaxies with JWST/NIRCam photometry spanning ≈1–5 μm and covering 49 arcmin2 from the public JWST Early Release Science programs (CEERS and GLASS). Our most secure candidates are two MUV ≈ −21 systems: GLASS-z12 and GLASS-z10. These galaxies display abrupt ≳1.8 mag breaks in their spectral energy distributions (SEDs), consistent with complete absorption of flux bluewards of Lyα that is redshifted to =+z12.40.3 0.1and=+z10.40.5 0.4. Lower redshift interlopers such as quiescent galaxies with strong Balmer breaks would be comfortably detected at >5σ in multiple bands where instead we find no flux. From SED modeling we infer that these galaxies have already built up ∼109 solar masses in stars over the ≲300–400 Myr after the Big Bang. The brightness of these sources enable morphological constraints. Tantalizingly, GLASS-z10 shows a clearly extended exponential light profile, potentially consistent with a disk galaxy of r50 ≈ 0.7 kpc. These sources, if confirmed, join GN-z11 in defying number density forecasts for luminous galaxies based on Schechter UV luminosity functions, which require a survey area >10× larger than we have studied here to find such luminous sources at such high redshifts. They extend evidence from lower redshifts for little or no evolution in the bright end of the UV luminosity function into the cosmic dawn epoch, with implications for just how early these galaxies began forming. This, in turn, suggests that future deep JWST observations may identify relatively bright galaxies to much earlier epochs than might have been anticipated., R.P.N. acknowledges funding from JWST programs GO-1933 and GO-2279. Support for this work was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. We acknowledge support from: the Swiss National Science Foundation through project grant 200020_207349 (P.A.O., A.W.). The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant No. 140. R.J.B. and M.S. acknowledge support from NWO grant TOP1.16.057

Published
2022
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2. JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST

Author

Erica J. Nelson, Katherine A. Suess, Rachel Bezanson, Sedona H. Price, Pieter van Dokkum, Joel Leja, Bingjie Wang, Katherine E. Whitaker, Ivo Labbé, Laia Barrufet, Gabriel Brammer, Daniel J. Eisenstein, Justus Gibson, Abigail I. Hartley, Benjamin D. Johnson, Kasper E. Heintz, Elijah Mathews, Tim B. Miller, Pascal A. Oesch, Lester Sandles, David J. Setton, Joshua S. Speagle, Sandro Tacchella, Ken-ichi Tadaki, Hannah Übler, John. R. Weaver, Nelson, EJ [0000-0002-7524-374X], Suess, KA [0000-0002-1714-1905], Bezanson, R [0000-0001-5063-8254], Price, SH [0000-0002-0108-4176], van Dokkum, P [0000-0002-8282-9888], Leja, J [0000-0001-6755-1315], Wang, B [0000-0001-9269-5046], Whitaker, KE [0000-0001-7160-3632], Labbé, I [0000-0002-2057-5376], Barrufet, L [0000-0003-1641-6185], Brammer, G [0000-0003-2680-005X], Eisenstein, DJ [0000-0002-2929-3121], Gibson, J [0000-0003-1903-9813], Hartley, AI [0000-0002-5891-1603], Johnson, BD [0000-0002-9280-7594], Heintz, KE [0000-0002-9389-7413], Mathews, E [0000-0003-0384-0681], Miller, TB [0000-0001-8367-6265], Oesch, PA [0000-0001-5851-6649], Sandles, L [0000-0001-9276-7062], Setton, DJ [0000-0003-4075-7393], Speagle, JS [0000-0003-2573-9832], Tacchella, S [0000-0002-8224-4505], Tadaki, KI [0000-0001-9728-8909], Übler, H [0000-0003-4891-0794], Weaver, JR [0000-0003-1614-196X], and Apollo - University of Cambridge Repository

Subjects
Space and Planetary Science, Astronomy and Astrophysics, 5109 Space Sciences, Astrophysics - Astrophysics of Galaxies, 51 Physical Sciences
Abstract

With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μm < 24.5 mag) and very faint or even invisible with HST (μm). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M ⋆ ≳ 1010 M ⊙, and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μm, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts.

Published
2023
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3. COSMOS2020: a panchromatic view of the universe to z 10 from two complementary catalogs

Author

J. R. Weaver, O. B. Kauffmann, O. Ilbert, H. J. McCracken, A. Moneti, S. Toft, G. Brammer, M. Shuntov, I. Davidzon, B. C. Hsieh, C. Laigle, A. Anastasiou, C. K. Jespersen, J. Vinther, P. Capak, C. M. Casey, C. J. R. McPartland, B. Milvang-Jensen, B. Mobasher, D. B. Sanders, L. Zalesky, S. Arnouts, H. Aussel, J. S. Dunlop, A. Faisst, M. Franx, L. J. Furtak, J. P. U. Fynbo, K. M. L. Gould, T. R. Greve, S. Gwyn, J. S. Kartaltepe, D. Kashino, A. M. Koekemoer, V. Kokorev, O. Le Fèvre, S. Lilly, D. Masters, G. Magdis, V. Mehta, Y. Peng, D. A. Riechers, M. Salvato, M. Sawicki, C. Scarlata, N. Scoville, R. Shirley, J. D. Silverman, A. Sneppen, V. Smolc̆ić, C. Steinhardt, D. Stern, M. Tanaka, Y. Taniguchi, H. I. Teplitz, M. Vaccari, W.-H. Wang, G. Zamorani, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Weaver, JR [0000-0003-1614-196X], Kauffmann, OB [0000-0001-5283-4662], Ilbert, O [0000-0002-7303-4397], McCracken, HJ [0000-0002-9489-7765], Toft, S [0000-0003-3631-7176], Brammer, G [0000-0003-2680-005X], Shuntov, M [0000-0002-7087-0701], Davidzon, I [0000-0002-2951-7519], Hsieh, BC [0000-0001-5615-4904], Anastasiou, A [0000-0001-8558-7709], Jespersen, CK [0000-0002-8896-6496], Vinther, J [0000-0002-4418-752X], Capak, P [0000-0003-3578-6843], Casey, CM [0000-0002-0930-6466], McPartland, CJR [0000-0003-0639-025X], Milvang-Jensen, B [0000-0002-2281-2785], Sanders, DB [0000-0002-1233-9998], Zalesky, L [0000-0001-5680-2326], Faisst, A [0000-0002-9382-9832], Franx, M [0000-0002-8871-3026], Furtak, LJ [0000-0001-6278-032X], Fynbo, JPU [0000-0002-8149-8298], Gould, KML [0000-0003-4196-5960], Greve, TR [0000-0002-2554-1837], Gwyn, S [0000-0001-8221-8406], Kartaltepe, JS [0000-0001-9187-3605], Kashino, D [0000-0001-9044-1747], Koekemoer, AM [0000-0002-6610-2048], Kokorev, V [0000-0002-5588-9156], Le Fèvre, O [0000-0001-5891-2596], Lilly, S [0000-0002-6423-3597], Masters, D [0000-0001-5382-6138], Magdis, G [0000-0002-4872-2294], Mehta, V [0000-0001-7166-6035], Riechers, DA [0000-0001-9585-1462], Salvato, M [0000-0001-7116-9303], Sawicki, M [0000-0002-7712-7857], Scarlata, C [0000-0002-9136-8876], Scoville, N [0000-0002-0438-3323], Shirley, R [0000-0002-1114-0135], Sneppen, A [0000-0002-5460-6126], Smolc̆ić, V [0000-0002-3893-8614], Steinhardt, C [0000-0003-3780-6801], Stern, D [0000-0003-2686-9241], Tanaka, M [0000-0002-5011-5178], Taniguchi, Y [0000-0003-2247-3741], Teplitz, HI [0000-0002-7064-5424], Vaccari, M [0000-0002-6748-0577], Wang, W-H [0000-0003-2588-1265], Zamorani, G [0000-0002-2318-301X], and Apollo - University of Cambridge Repository

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics - astrophysics of galaxies, Astrophysics - cosmology and nongalactic astrophysics, FOS: Physical sciences, 5109 Space Sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies and Cosmology, Universe, panchromatic view, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics, 51 Physical Sciences
Abstract

The Cosmic Evolution Survey (COSMOS) has become a cornerstone of extragalactic astronomy. Since the last public catalog in 2015, a wealth of new imaging and spectroscopic data has been collected in the COSMOS field. This paper describes the collection, processing, and analysis of this new imaging data to produce a new reference photometric redshift catalog. Source detection and multi-wavelength photometry is performed for 1.7 million sources across the $2\,\mathrm{deg}^{2}$ of the COSMOS field, $\sim$966,000 of which are measured with all available broad-band data using both traditional aperture photometric methods and a new profile-fitting photometric extraction tool, The Farmer, which we have developed. A detailed comparison of the two resulting photometric catalogs is presented. Photometric redshifts are computed for all sources in each catalog utilizing two independent photometric redshift codes. Finally, a comparison is made between the performance of the photometric methodologies and of the redshift codes to demonstrate an exceptional degree of self-consistency in the resulting photometric redshifts. The $i, Comment: 39 pages, 21 figures, accepted for publication in The Astrophysical Journal Supplement Series. Production of IRAC mosaics are presented in Moneti et al. "Euclid Preparation: XVIII. Cosmic Dawn Survey. Spitzer observations of the Euclid deep fields and calibration fields" which has been posted simultaneously. Catalogs can be accessed online now at https://cosmos2020.calet.org

Published
2022
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