2023A&A...675A..39P

Query : 2023A&A...675A..39P

2023A&A...675A..39P - Astronomy and Astrophysics, volume 675A39 (2023/7-1)

Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS TOI-615b, TOI-622b, and TOI-2641b.

PSARIDI A., BOUCHY F., LENDL M., AKINSANMI B., STASSUN K.G., SMALLEY B., ARMSTRONG D.J., HOWARD S., ULMER-MOLL S., GRIEVES N., BARKAOUI K., RODRIGUEZ J.E., BRYANT E.M., SUAREZ O., GUILLOT T., EVANS P., ATTIA O., WITTENMYER R.A., YEE S.W., COLLINS K.A., ZHOU G., GALLAND F., PARC L., UDRY S., FIGUEIRA P., ZIEGLER C., MORDASINI C., WINN J.N., SEAGER S., JENKINS J.M., TWICKEN J.D., BRAHM R., JONES M.I., ABE L., ADDISON B., BRICENO C., BRIEGAL J.T., COLLINS K.I., DAYLAN T., EIGMULLER P., FURESZ G., GUERRERO N.M., HAGELBERG J., HEITZMANN A., HOUNSELL R., HUANG C.X., KRENN A., LAW N.M., MANN A.W., McCORMAC J., MEKARNIA D., MOUNZER D., NIELSEN L.D., OSBORN A., REINARZ Y., SEFAKO R.R., STEINER M., STROM P.A., TRIAUD A.H.M.J., VANDERSPEK R., VANZI L., VINES J.I., WATSON C.A., WRIGHT D.J. and ZAPATA A.

Abstract (from CDS):

While the sample of confirmed exoplanets continues to grow, the population of transiting exoplanets around early-type stars is still limited. These planets allow us to investigate the planet properties and formation pathways over a wide range of stellar masses and study the impact of high irradiation on hot Jupiters orbiting such stars. We report the discovery of TOI-615b, TOI-622b, and TOI-2641b, three Saturn-mass planets transiting main sequence, F-type stars. The planets were identified by the Transiting Exoplanet Survey Satellite (TESS) and confirmed with complementary ground-based and radial velocity observations. TOI-615b is a highly irradiated (∼1277 F⊕) and bloated Saturn-mass planet ($1.69_{ - 0.06}^{ + 0.05}{R_{{\rm{Jup}}}}$ and $0.43_{ - 0.08}^{ + 0.09}{M_{{\rm{Jup}}}}$) in a 4.66 day orbit transiting a 6850 K star. TOI-622b has a radius of $0.82_{ - 0.03}^{ + 0.03}{R_{{\rm{Jup}}}}$ and a mass of $0.30_{ - 0.08}^{ + 0.07}{M_{{\rm{Jup}}}}$ in a 6.40 day orbit. Despite its high insolation flux (∼600 F⊕), TOI-622b does not show any evidence of radius inflation. TOI-2641b is a $0.39_{ - 0.04}^{ + 0.02}{M_{{\rm{Jup}}}}$ planet in a 4.88 day orbit with a grazing transit (${\rm{b}} = 1.04_{ - 0.06}^{ + 0.05}$) that results in a poorly constrained radius of $1.61_{ - 0.64}^{ + 0.46}{R_{{\rm{Jup}}}}$. Additionally, TOI-615b is considered attractive for atmospheric studies via transmission spectroscopy with ground-based spectrographs and JWST. Future atmospheric and spin-orbit alignment observations are essential since they can provide information on the atmospheric composition, formation, and migration of exoplanets across various stellar types.

Abstract Copyright: © The Authors 2023

Journal keyword(s): planets and satellites: individual: TOI-615b - planets and satellites: individual: TOI-622b - stars: early-type - techniques: photometric - techniques: radial velocities - planets and satellites: individual: TOI-2641b

VizieR on-line data: <Available at CDS (J/A+A/675/A39): stars.dat lcs.dat rvs.dat>

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 2685b Pl 00 29 18.9525583296 -76 18 14.621613984           ~ 19 0
2 HD 5278b Pl 00 50 09.9045832224 -83 44 38.032610136           ~ 17 0
3 TOI-2046b Pl 01 04 44.3624227608 +74 19 52.857091056           ~ 14 0
4 TOI-2152b Pl 01 45 21.2186055384 +77 47 24.626548536           ~ 4 0
5 TOI-558b Pl 02 49 09.9600704640 -58 01 28.916403528           ~ 8 0
6 TOI-2154b Pl 04 44 06.8691836760 +84 21 51.118284780           ~ 3 0
7 TOI-4137b Pl 05 10 27.0303178344 +70 23 27.931133976           ~ 5 0
8 HD 271181b Pl 05 19 04.3563005856 -71 53 44.149197984           ~ 12 0
9 TOI-892b Pl 05 46 57.1750247928 -11 14 07.317522996           ~ 11 0
10 HD 39474b Pl 05 49 36.4133735952 -54 54 38.555451540           ~ 19 0
11 HD 250208b Pl 06 00 15.0079377720 +11 53 03.029477316           ~ 3 0
12 TOI-5153b Pl 06 06 09.6672992904 -19 57 11.863584108           ~ 8 0
13 HD 44717B BD? 06 23 18.69 +00 53 00.1           ~ 11 0
14 HD 288842b Pl 06 37 03.1363669152 +01 46 03.194967396           ~ 10 0
15 TOI-640b Pl 06 38 56.3073574680 -36 38 46.145776488           ~ 15 0
16 TOI-150b Pl 07 31 51.7562378496 -73 36 22.148692668           ~ 16 0
17 HD 70661b Pl 08 21 13.2199986312 -46 29 03.195188016           ~ 7 0
18 HD 70661 * 08 21 13.2199986312 -46 29 03.195188016   9.47 9.00     F5V 16 0
19 TOI-615b Pl 08 53 38.1089031072 -40 32 37.721832036           ~ 3 0
20 TOI-615 * 08 53 38.1089031072 -40 32 37.721832036   11.11 10.82     F2V 10 0
21 NAME TOI-2543B BD? 09 06 23.26 +03 34 03.7           ~ 8 0
22 HD 297549b Pl 09 36 28.6865083440 -50 27 47.795508000           ~ 27 0
23 CD-81 373b Pl 10 22 25.8181710480 -82 13 07.977573120           ~ 5 0
24 HD 300730b Pl 10 23 56.2397428368 -56 50 35.342013012           ~ 23 0
25 Gaia DR3 5382970374226954112 * 11 24 31.0639871835 -42 43 53.286064664           ~ 1 0
26 TOI-2641 * 11 24 31.3351441848 -42 43 55.551471456   12.02 11.69     F9V 7 0
27 TOI-2641b Pl 11 24 31.3351441848 -42 43 55.551471456           ~ 1 0
28 TOI-1842b Pl 13 27 51.0619960968 +09 01 50.435676912           ~ 14 0
29 BD-22 3669B BD? 13 50 20.39 -23 23 00.0           ~ 9 0
30 BD+16 3058b Pl 16 52 44.7202666920 +16 34 47.839982988           ~ 35 0
31 HD 201033b Pl 21 04 48.8646514344 +55 35 16.514573928           ~ 31 0
32 HD 202772Ab Pl 21 18 47.8741665264 -26 36 58.053779532           ~ 28 0
33 TOI-1333b Pl 21 40 03.5038499808 +48 24 24.527867364           ~ 8 0
34 TOI-1516b Pl 22 40 20.2606796232 +69 30 13.455918936           ~ 6 0

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