http://arxiv.org/abs/1811.03043
We present the discovery of 7 new planets and 8 planet candidates around subgiant stars, as additions to the known sample of planets around “retired A stars” (Johnson et al. 2006). Among these are the possible first 3-planet systems around subgiant star, HD 163607 and HD 4917. Additionally, we present calculations of possible transit times, durations, depths, and probabilities for all known planets around subgiant (3 < log g < 4) stars, focused on possible transits during the TESS mission. While most have transit probabilities of 1-2%, we find that there are 3 planets with transit probabilities > 9%.
J. Luhn, F. Bastien, J. Johnson, et. al.
Thu, 8 Nov 18
21/72
Comments: 30 pages, 24 figures, accepted for publication in The Astrophysical Journal. Machine-readable tables included in source download
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