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Start Over Author "Judith Korth" Journal monthly notices of the royal astronomical society
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. 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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3. Lack of close-in, massive planets of main-sequence A-type stars from Kepler

Author

S. Sabotta, Eike W. Guenther, Sascha Grziwa, Daniel Dupkala, Marek Skarka, Judith Korth, Petr Kabath, and Tereza Klocova

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), Physics, 010308 nuclear & particles physics, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Planetary system, Light curve, A-type main-sequence star, 01 natural sciences, Radial velocity, Stars, Space and Planetary Science, Planet, 0103 physical sciences, Hot Jupiter, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Transit (astronomy), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

Some theories of planet formation and evolution predict that intermediate-mass stars host more hot Jupiters than Sun-like stars, others reach the conclusion that such objects are very rare. By determining the frequencies of those planets we can test those theories. Based on the analysis of Kepler light curves it has been suggested that about 8 per cent of the intermediate-mass stars could have a close-in substellar companion. This would indicate a very high frequency of such objects. Up to now, there was no satisfactory proof or test of this hypothesis. We studied a previously reported sample of 166 planet candidates around main-sequence A-type stars in the Kepler field. We selected six of them for which we obtained extensive long-term radial velocity measurements with the Alfred Jensch 2-m telescope in Tautenburg and the Perek 2-m telescope in Ondřejov. We derive upper limits of the masses of the planet candidates. We show that we are able to detect this kind of planet with our telescopes and their instrumentation using the example of MASCARA-1 b. With the transit finding pipeline Extrans we confirm that there is no single transit event from a Jupiter-like planet in the light curves of those 166 stars. We furthermore determine that the upper limit for the occurrence rate of close-in, massive planets for A-type stars in the Kepler sample is around 0.75 per cent. We argue that there is currently little evidence for a very high frequency of close-in, massive planets of intermediate-mass stars.

Published
2019
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4. K2-290: a warm Jupiter and a mini-Neptune in a triple-star system

Author

J. P. de Leon, A. P. Hatzes, G. Antoniciello, Anders Bo Justesen, Trifon Trifonov, J. Cabrera, Simon Albrecht, M. Hjorth, Sascha Grziwa, William D. Cochran, Enric Palle, Roi Alonso, Heike Rauer, Joshua N. Winn, Sz. Csizmadia, Fei Dai, Grzegorz Nowak, Masayuki Kuzuhara, Seth Redfield, Norio Narita, V. Van Eylen, Rafael Luque, P. Heeren, Judith Korth, Davide Gandolfi, M. Esposito, Anders Erikson, Oscar Barragán, Ph. Eigmüller, David Nespral, Martin Pätzold, K. W. F. Lam, J. Prieto-Arranz, Teruyuki Hirano, Carina M. Persson, Pilar Montañés-Rodríguez, Alexis M. S. Smith, D. Hidalgo, Malcolm Fridlund, John H. Livingston, Hans J. Deeg, Michael Endl, Florian Rodler, and Eike W. Guenther

Subjects
planets and satellites: detection, FOS: Physical sciences, Planets, individual: EPIC 249624646 [Satellites], EPIC, 01 natural sciences, Star system, Planets and satellites: detection, Planets and satellites: formation, Planets and satellites: individual: K2-290, Satellites: individual: EPIC 249624646, Photometry (optics), Planet, 0103 physical sciences, planets and satellites: formation, 10. No inequality, Spectroscopy, 010303 astronomy & astrophysics, Earth and Planetary Astrophysics (astro-ph.EP), Physics, 010308 nuclear & particles physics, Astronomy, planets and satellites: individual: K2-290, Astronomy and Astrophysics, Orbital period, Orbit, detection [Planets and satellites], 13. Climate action, Space and Planetary Science, individual: K2-290 [Planets and satellites], Mini-Neptune, planets and satellites: individual: EPIC 249624646, formation [Planets and satellites], Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of two transiting planets orbiting K2-290 (EPIC 249624646), a bright (V=11.11) late F-type star residing in a triple-star system. It was observed during Campaign 15 of the K2 mission, and in order to confirm and characterise the system, follow-up spectroscopy and AO imaging were carried out using the FIES, HARPS, HARPS-N, and IRCS instruments. From AO imaging and Gaia data we identify two M-dwarf companions at a separation of $113 \pm 2$ AU and $2467_{-155}^{+177}$ AU. From radial velocities, K2 photometry, and stellar characterisation of the host star, we find the inner planet to be a mini-Neptune with a radius of $3.06 \pm 0.16 R_{\oplus}$ and an orbital period of $P = 9.2$ days. The radius of the mini-Neptune suggests that the planet is located above the radius valley, and with an incident flux of $F\sim 400 F_{\oplus}$, it lies safely outside the super-Earth desert. The outer warm Jupiter has a mass of $0.774\pm 0.047 M_{\rm J}$ and a radius of $1.006\pm 0.050R_{\rm J}$, and orbits the host star every 48.4 days on an orbit with an eccentricity $e, 16 pages, 8 figures, accepted for publication in MNRAS. Updated to accepted version (including K2 name)

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