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Start Over Author "Judith Korth" Publisher nasa center for aerospace information (casi)
4 results on '"Judith Korth"'

1. A pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 characterized with CHEOPS

Author

Thomas G Wilson, Elisa Goffo, Yann Alibert, Davide Gandolfi, Andrea Bonfanti, Carina M Persson, Andrew Collier Cameron, Malcolm Fridlund, Luca Fossati, Judith Korth, Willy Benz, Adrien Deline, Hans-Gustav Florén, Pascal Guterman, Vardan Adibekyan, Matthew J Hooton, Sergio Hoyer, Adrien Leleu, Alexander James Mustill, Sébastien Salmon, Sérgio G Sousa, Olga Suarez, Lyu Abe, Abdelkrim Agabi, Roi Alonso, Guillem Anglada, Joel Asquier, Tamas Bárczy, David Barrado Navascues, Susana C C Barros, Wolfgang Baumjohann, Mathias Beck, Thomas Beck, Nicolas Billot, Xavier Bonfils, Alexis Brandeker, Christopher Broeg, Edward M Bryant, Matthew R Burleigh, Marco Buttu, Juan Cabrera, Sébastien Charnoz, David R Ciardi, Ryan Cloutier, William D Cochran, Karen A Collins, Knicole D Colón, Nicolas Crouzet, Szilard Csizmadia, Melvyn B Davies, Magali Deleuil, Laetitia Delrez, Olivier Demangeon, Brice-Olivier Demory, Diana Dragomir, Georgina Dransfield, David Ehrenreich, Anders Erikson, Andrea Fortier, Tianjun Gan, Samuel Gill, Michaël Gillon, Crystal L Gnilka, Nolan Grieves, Sascha Grziwa, Manuel Güdel, Tristan Guillot, Jonas Haldemann, Kevin Heng, Keith Horne, Steve B Howell, Kate G Isaak, Jon M Jenkins, Eric L N Jensen, Laszlo Kiss, Gaia Lacedelli, Kristine Lam, Jacques Laskar, David W Latham, Alain Lecavelier des Etangs, Monika Lendl, Kathryn V Lester, Alan M Levine, John Livingston, Christophe Lovis, Rafael Luque, Demetrio Magrin, Wenceslas Marie-Sainte, Pierre F L Maxted, Andrew W Mayo, Brian McLean, Marko Mecina, Djamel Mékarnia, Valerio Nascimbeni, Louise D Nielsen, Göran Olofsson, Hugh P Osborn, Hannah L M Osborne, Roland Ottensamer, Isabella Pagano, Enric Pallé, Gisbert Peter, Giampaolo Piotto, Don Pollacco, Didier Queloz, Roberto Ragazzoni, Nicola Rando, Heike Rauer, Seth Redfield, Ignasi Ribas, George R Ricker, Martin Rieder, Nuno C Santos, Gaetano Scandariato, François-Xavier Schmider, Richard P Schwarz, Nicholas J Scott, Sara Seager, Damien Ségransan, Luisa Maria Serrano, Attila E Simon, Alexis M S Smith, Manfred Steller, Chris Stockdale, Gyula Szabó, Nicolas Thomas, Eric B Ting, Amaury H M J Triaud, Stéphane Udry, Vincent Van Eylen, Valérie Van Grootel, Roland K Vanderspek, Valentina Viotto, Nicholas Walton, and Joshua N Winn

Published
2022
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2. The Multiplanet System TOI-421: A Warm Neptune and a Super Puffy Mini-Neptune Transiting a G9 V Star in a Visual Binary

Author

Ilaria Carleo, Davide Gandolfi, Oscar Barragán, John H. Livingston, Carina M. Persson, Kristine W. F. Lam, Aline Vidotto, Michael B. Lund, Carolina Villarreal D'Angelo, Karen A. Collins, Luca Fossati, Andrew W. Howard, Daria Kubyshkina, Rafael Brahm, Antonija Oklopčić, Paul Mollière, Seth Redfield, Luisa Maria Serrano, Fei Dai, Malcolm Fridlund, Francesco Borsa, Judith Korth, Massimiliano Esposito, Matías R. Díaz, Louise Dyregaard Nielsen, Coel Hellier, Savita Mathur, Hans J. Deeg, Artie P. Hatzes, Serena Benatti, Florian Rodler, Javier Alarcon, Lorenzo Spina, Ângela R. G. Santos, Iskra Georgieva, Rafael A. García, Lucía González-Cuesta, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Simon Albrecht, Natalie M. Batalha, Corey Beard, Patricia T. Boyd, François Bouchy, Jennifer A. Burt, R. Paul Butler, Juan Cabrera, Ashley Chontos, David R. Ciardi, William D. Cochran, Kevin I. Collins, Jeffrey D. Crane, Ian Crossfield, Szilard Csizmadia, Diana Dragomir, Courtney Dressing, Philipp Eigmüller, Michael Endl, Anders Erikson, Nestor Espinoza, Michael Fausnaugh, Fabo Feng, Erin Flowers, Benjamin Fulton, Erica J. Gonzales, Nolan Grieves, Sascha Grziwa, Eike W. Guenther, Natalia M. Guerrero, Thomas Henning, Diego Hidalgo, Teruyuki Hirano, Maria Hjorth, Daniel Huber, Howard Isaacson, Matias Jones, Andrés Jordán, Petr Kabáth, Stephen R. Kane, Emil Knudstrup, Jack Lubin, Rafael Luque, Ismael Mireles, Norio Narita, David Nespral, Prajwal Niraula, Grzegorz Nowak, Enric Pallé, Martin Pätzold, Erik A. Petigura, Jorge Prieto-Arranz, Heike Rauer, Paul Robertson, Mark E. Rose, Arpita Roy, Paula Sarkis, Joshua E. Schlieder, Damien Ségransan, Stephen Shectman, Marek Skarka, Alexis M. S. Smith, Jeffrey C. Smith, Keivan G. Stassun, Johanna Teske7, Joseph D. Twicken, Vincent Van Eylen, Sharon Wang, Lauren M. Weiss, and Aurélien Wyttenbach

Subjects
Astronomy
Abstract

We report the discovery of a warm Neptune and a hot sub-Neptune transiting TOI-421 (BD-14 1137, TIC 94986319), a bright (V = 9.9) G9 dwarf star in a visual binary system observed by the Transiting Exoplanet Survey Satellite (TESS) space mission in Sectors 5 and 6. We performed ground-based follow-up observations—comprised of Las Cumbres Observatory Global Telescope transit photometry, NIRC2 adaptive optics imaging, and FIbre-fed Echellé Spectrograph, CORALIE, High Accuracy Radial velocity Planet Searcher, High Resolution Échelle Spectrometer, and Planet Finder Spectrograph high-precision Doppler measurements—and confirmed the planetary nature of the 16 day transiting candidate announced by the TESS team. We discovered an additional radial velocity signal with a period of five days induced by the presence of a second planet in the system, which we also found to transit its host star. We found that the inner mini-Neptune, TOI-421 b, has an orbital period of P(b) = 5.19672 ± 0.00049 days, a mass of M(b) = 7.17 ± 0.66 Mꚛ, and a radius of R(b) = 2.68 (+0.19,-0.18) Rꚛ, whereas the outer warm Neptune, TOI-421 c, has a period of P(c) = 16.06819 ± 0.00035 days, a mass of M(c) = 16.42 (+1.06,-1.04) Mꚛ, a radius of R(c) = 5.09{+0.16,-0.15) Rꚛ, and a density of ρ(c) = 0.685 (+0.080,-0.072) g/cu. cm. With its characteristics, the outer planet (ρ(c) = .685 {+0.080,-0.072) g/cu cm) is placed in the intriguing class of the super-puffy mini-Neptunes. TOI-421 b and TOI-421 c are found to be well-suited for atmospheric characterization. Our atmospheric simulations predict significant Lyα transit absorption, due to strong hydrogen escape in both planets, as well as the presence of detectable CH4 in the atmosphere of TOI-421 c if equilibrium chemistry is assumed.

Published
2020
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3. TOI-503: The First Known Brown-dwarf Am-star Binary from the TESS Mission

Author

Jan Subjak, Rishikesh Sharma, Theron W. Carmichael, Marshall C. Johnson, Erica J. Gonzales, Elisabeth Matthews, Henri M. J. Boffin, Rafael Brahm, Priyanka Chaturvedi, Abhijit Chakraborty, David R. Ciardi, Karen A. Collins, Massimiliano Esposito, Malcolm Fridlund, Tianjun Gan, Davide Gandolfi, Rafael A. García, Eike Guenther, Artie Hatzes, David W. Latham, Stéphane Mathis, Savita Mathur, Carina M. Persson, Howard M. Relles, Joshua E Schlieder, Thomas Barclay, Courtney D. Dressing, Ian Crossfield, Andrew W. Howard, Florian Rodler, George Zhou, Samuel N. Quinn, Gilbert A. Esquerdo, Michael L. Calkins, Perry Berlind, Keivan G. Stassun, Martin Blažek, Marek Skarka, Magdalena Spoková, Jirí Zák, Simon Albrecht, Roi Alonso Sobrino, Paul Beck, Juan Cabrera, Ilaria Carleo, William D. Cochran, Szilard Csizmadia, Fei Dai, Hans J. Deeg, Jerome P. de Leon, Philipp Eigmüller, Michael Endl, Anders Erikson, Akihiko Fukui, Iskra Georgieva, Lucía González-Cuesta, Sascha Grziwa, Diego Hidalgo, Teruyuki Hirano, Maria Hjorth, Emil Knudstrup, Judith Korth, Kristine W. F. Lam, John H. Livingston, Mikkel N. Lund, Rafael Luque, Pilar Montanes Rodríguez, Felipe Murgas, Norio Narita, David Nespral, Prajwal Niraula, Grzegorz Nowak, Enric Pallé, Martin Pätzold, Jorge Prieto-Arranz, Heike Rauer, Seth Redfield, Ignasi Ribas, Alexis M. S. Smith, Vincent Van Eylen, and Petr Kabáth

Subjects
Astronomy
Abstract

We report the discovery of an intermediate-mass transiting brown dwarf (BD), TOI-503b, from the TESS mission. TOI-503b is the first BD discovered by TESS, and it has circular orbit around a metallic-line A-type star with a period of P=3.6772±0.0001 days. The light curve from TESS indicates that TOI-503b transits its host star in a grazing manner, which limits the precision with which we measure the BD’s radius R(b) = 1.34(+0.26, -0.15)R(J). We obtained high resolution spectroscopic observations with the FIES, Ondrejov, PARAS, Tautenburg, and TRES spectrographs, and measured the mass of TOI-503b to be M(b)=53.7±1.2 M(J). The host star has a mass of M(*)=1.80±0.06M(ʘ), a radius of R(*)=1.70±0.05R(ʘ), an effective temperature of T(eff)=7650±160 K, and a relatively high metallicity of 0.61±0.07 dex. We used stellar isochrones to derive the age of the system to be ∼180 Myr, which places its age between that of RIK 72b (a ∼10 Myr old BD in the Upper Scorpius stellar association) and AD 3116b (a ∼600 Myr old BD in the Praesepe cluster). Given the difficulty in measuring the tidal interactions between BDs and their host stars, we cannot precisely say whether this BD formed in situ or has had its orbit circularized by its host star over the relatively short age of the system. Instead, we offer an examination of plausible values for the tidal quality factor for the star and BD. TOI-503b joins a growing number of known short-period, intermediate-mass BDs orbiting main sequence stars, and is the second such BD known to transit an A star, after HATS-70b. With the growth in the population in this regime, the driest region in the BD desert (35–55M(J) sin i) is reforesting.

Published
2020
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4. K2-264: a transiting multiplanet system in the Praesepe open cluster

Author

John H Livingston, Fei Dai, Teruyuki Hirano, Davide Gandolfi, Alessandro A Trani, Grzegorz Nowak, William D Cochran, Michael Endl, Simon Albrecht, Oscar Barragan, Juan Cabrera, Szilard Csizmadia, Jerome P de Leon, Hans Deeg, Philipp Eigmüller, Anders Erikson, Malcolm Fridlund, Akihiko Fukui, Sascha Grziwa, Eike W Guenther, Artie P Hatzes, Judith Korth, Masayuki Kuzuhara, Pilar Montañes, Norio Narita, David Nespral, Enric Palle, Martin Pätzold, Carina M Persson, Jorge Prieto-Arranz, Heike Rauer, Motohide Tamura, Vincent Van Eylen, and Joshua N Winn

Published
2018
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