Reference : Two new HATNet hot Jupiters around A stars, and the first glimpse at the occurrence r...
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Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/237486
Two new HATNet hot Jupiters around A stars, and the first glimpse at the occurrence rate of hot Jupiters from TESS
English
Zhou, G. [> >]
Huang, C. [> >]
Bakos, G. [> >]
Hartman, J. [> >]
Latham, D. [> >]
Quinn, S. [> >]
Collins, K. [> >]
Winn, J. [> >]
Kovacs, G. [> >]
Csubry, Z. [> >]
Bhatti, W. [> >]
Penev, K. [> >]
Bieryla, A. [> >]
Esquerdo, G. [> >]
Berlind, P. [> >]
Calkins, M. [> >]
de Val-Borro, M. [> >]
Noyes, R. [> >]
Lázár, J. [> >]
Papp, I. [> >]
Sari, P. [> >]
Kovacs, T. [> >]
Buchhave, Lars A. [> >]
Szklenár, T. [> >]
Beky, B. [> >]
Johnson, M. [> >]
Stassun, K. [> >]
Shporer, A. [> >]
Wong, I. [> >]
Espinoza, N. [> >]
Bayliss, D. [> >]
Howell, S. [> >]
Hellier, C. [> >]
Anderson, D. [> >]
West, R. [> >]
Brown, D. [> >]
Schanche, N. [> >]
Barkaoui, K. [> >]
Pozuelos, F. [> >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic >]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Benkhaldoun, Z. [> >]
Daassou, A. [> >]
Ricker, G. [> >]
Vanderspek, R. [> >]
Seager, S. [> >]
Jenkins, J. [> >]
Lissauer, J. [> >]
Collins, K. [> >]
Gan, T. [> >]
Hart, R. [> >]
Horne, K. [> >]
Kielkopf, J. [> >]
Nielsen, L. [> >]
Nishiumi, T. [> >]
Narita, N. [> >]
Palle, E. [> >]
Relles, H. [> >]
Sefako, R. [> >]
Tan, T. [> >]
Davies, M. [> >]
Goeke, Robert F. [> >]
Guerrero, N. [> >]
Haworth, K. [> >]
Villanueva, S. [> >]
1-Jun-2019
No
[en] Astrophysics - Earth and Planetary Astrophysics
[en] Wide field surveys for transiting planets are well suited to searching diverse stellar populations, enabling a better understanding of the link between the properties of planets and their parent stars. We report the discovery of HAT-P-69 b (TOI 625.01) and HAT-P-70 b (TOI 624.01), two new hot Jupiters around A stars from the HATNet survey which have also been observed by the Transiting Exoplanet Survey Satellite (TESS). HAT-P-69 b has a mass of 3.73 (+0.61/-0.59) Mjup and a radius of 1.626 (+0.032/-0.025) Rjup, and is in a prograde 4.79-day orbit around a star of mass 1.698+/-0.025 Msun and radius 1.854 (+0.043/-0.022) Rsun. HAT-P-70 b has a radius of 1.87 (+0.15/-0.10) Rjup and a mass constraint of <6.78 (3sigma) Mjup, and is in a retrograde 2.74-day orbit around a star of mass 1.890 (+0.010/-0.013) Msun and radius 1.858 (+0.119/-0.091) Rsun. We use the confirmation of these planets around relatively massive stars as an opportunity to explore the occurrence rate of hot Jupiters as a function of stellar mass. We define a sample of 47,126 main-sequence stars brighter than Tmag=10 that yields 31 giant planet candidates, including 18 confirmed planets, 3 candidates, and 10 false positives. We find a net hot Jupiter occurrence rate of 0.45+/-0.10% within this sample, consistent with the rate measured by Kepler for FGK stars. When divided into stellar mass bins, we find the occurrence rate to be 0.71+/-0.31% G stars, 0.43+/-0.15% for F stars, and 0.32+/-0.12% for A stars. Thus, at this point, we cannot discern any statistically significant trend in the occurrence of hot Jupiters with stellar mass.
http://hdl.handle.net/2268/237486
https://ui.adsabs.harvard.edu/abs/2019arXiv190600462Z
Submitted to AJ, comments welcome
https://ui.adsabs.harvard.edu/abs/2019arXiv190600462Z/abstract

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