2022A&A...664A..94P


Query : 2022A&A...664A..94P

2022A&A...664A..94P - Astronomy and Astrophysics, volume 664A, 94-94 (2022/8-1)

Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars.

PSARIDI A., BOUCHY F., LENDL M., GRIEVES N., STASSUN K.G., CARMICHAEL T., GILL S., ROJAS P.A.P., GAN T., SHPORER A., BIERYLA A., BRAHM R., CHRISTIANSEN J.L., CROSSFIELD I.J.M., GALLAND F., HOOTON M.J., JENKINS J.M., JENKINS J.S., LATHAM D.W., LUND M.B., RODRIGUEZ J.E., TING E.B., UDRY S., ULMER-MOLL S., WITTENMYER R.A., ZHANG Y., ZHOU G., ADDISON B., COINTEPAS M., COLLINS K.A., COLLINS K.I., DELINE A., DRESSING C.D., EVANS P., GIACALONE S., HEITZMANN A., MIRELES I., MOUNZER D., OTEGI J., RADFORD D.J., RUDAT A., SCHLIEDER J.E., SCHWARZ R.P., SRDOC G., STOCKDALE C., SUAREZ O., WRIGHT D.J. and ZHAO Y.

Abstract (from CDS):


Context. The detection and characterization of exoplanets and brown dwarfs around massive AF-type stars is essential to investigate and constrain the impact of stellar mass on planet properties. However, such targets are still poorly explored in radial velocity (RV) surveys because they only feature a small number of stellar lines and those are usually broadened and blended by stellar rotation as well as stellar jitter. As a result, the available information about the formation and evolution of planets and brown dwarfs around hot stars is limited.
Aims. We aim to increase the sample and precisely measure the masses and eccentricities of giant planets and brown dwarfs transiting early-type stars detected by the Transiting Exoplanet Survey Satellite (TESS).
Methods. We followed bright (V < 12 mag) stars with Teff > 6200 K that host giant companions (R>7R) using ground-based photometric observations as well as high precision radial velocity measurements from the CORALIE, CHIRON, TRES, FEROS, and MINERVA-Australis spectrographs.
Results. In the context of the search for exoplanets and brown dwarfs around early-type stars, we present the discovery of three brown dwarf companions, TOI-629b, TOI-1982b, and TOI-2543b, and one massive planet, TOI-1107b. From the joint analysis of TESS and ground-based photometry in combination with high precision radial velocity measurements, we find the brown dwarfs have masses between 66 and 68 MJup, periods between 7.54 and 17.17 days, and radii between 0.95 and 1.11 RJup. The hot Jupiter TOI-1107b has an orbital period of 4.08 days, a radius of 1.30 RJup, and a mass of 3.35 MJup. As a by-product of this program, we identified four low-mass eclipsing components (TOI-288b, TOI-446b, TOI-478b, and TOI-764b).
Conclusions. Both TOI-1107b and TOI-1982b present an anomalously inflated radius with respect to the age of these systems. TOI-629 is among the hottest stars with a known transiting brown dwarf. TOI-629b and TOI-1982b are among the most eccentric brown dwarfs. The massive planet and the three brown dwarfs add to the growing population of well-characterized giant planets and brown dwarfs transiting AF-type stars and they reduce the apparent paucity.

Abstract Copyright: © A. Psaridi et al. 2022

Journal keyword(s): brown dwarfs - planetary systems - techniques: photometric - techniques: radial velocities - stars: early-type - binaries: eclipsing

VizieR on-line data: <Available at CDS (J/A+A/664/A94): stars.dat lcs1.dat lcs2.dat rvs1.dat rvs2.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 60

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Number of rows : 60
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 KELT-1b Pl 00 01 26.9169325133 +39 23 01.782142922           ~ 101 0
2 HD 2685b Pl 00 29 18.9527148000 -76 18 14.623257174           ~ 12 0
3 TOI-852b BD? 01 38 57.6639620046 -07 16 51.256349916           ~ 5 0
4 HD 15082b Pl 02 26 51.0582746497 +37 33 01.737746137           ~ 295 1
5 TOI-263.01 Pl? 02 28 25.9517900506 -25 05 50.539974594           ~ 10 0
6 GPX-1b Pl? 02 33 28.6057674360 +56 01 32.548681642           ~ 5 0
7 TYC 7053-1822-1 * 05 00 41.1873845184 -35 12 09.398752920   12.830 12.319     ~ 6 0
8 TOI-446b Pl? 05 00 41.1873845184 -35 12 09.398752920           ~ 1 0
9 HD 274870B BD? 05 28 30.7098553322 -48 24 32.302778259           ~ 6 0
10 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1813 1
11 TOI-811b BD? 05 52 07.2569953541 -32 55 30.663337365           ~ 9 0
12 HD 44717 * 06 23 18.6911952888 +00 53 00.105902772   8.84 8.74     A0V 7 0
13 TOI-629.01 Pl? 06 23 18.6912365440 +00 53 00.107912261           ~ 3 0
14 CoRoT-15b BD? 06 28 27.8204 +06 11 10.477   17.012 15.997 15.807   ~ 44 1
15 [KC2019] Theia 838 As* 06 29 10.26 +04 23 14.8           ~ 2 0
16 TOI-746.01 Pl? 06 38 28.9994837538 -67 38 56.319562707           ~ 2 0
17 TYC 6516-842-1 * 06 40 38.1123822720 -27 34 17.063072508   12.20 11.66     ~ 4 0
18 TOI-478b Pl? 06 40 38.1123822720 -27 34 17.063072508           ~ 1 0
19 HATS-70b Pl 07 16 25.0880178844 -31 14 39.858560668           ~ 22 0
20 CD-41 3255B BD? 07 40 24.6582390859 -42 09 16.740639385           ~ 5 0
21 BD+13 1880B BD? 08 17 16.8973986331 +12 36 04.912283928           ~ 10 0
22 TOI-587b Pl? 08 41 35.0486575537 -22 11 39.574721391           ~ 2 0
23 EPIC 211946007.01 Pl? 08 42 39.4400086116 +19 24 51.898666284           ~ 8 0
24 EPIC 212036875.01 Pl 08 58 45.6699859877 +20 52 08.784463659           ~ 9 0
25 TOI-2543b Pl? 09 06 23.2683706176 +03 34 03.702389844           ~ 1 0
26 TYC 229-654-1 * 09 06 23.2683706176 +03 34 03.702389844   11.72 11.18     ~ 1 0
27 HD 85628b Pl 09 50 19.2005724437 -66 06 49.892567590           ~ 14 0
28 LP 261-75 B BD* 09 51 05.49288 +35 58 02.1288           L6V 56 0
29 CD-81 373 * 10 22 25.8181710480 -82 13 07.977573120   11.04 10.55     ~ 1 0
30 TOI-1107b Pl? 10 22 25.8181710480 -82 13 07.977573120           ~ 1 0
31 TOI-3362b Pl? 10 23 56.2398435409 -56 50 35.340538178           ~ 4 0
32 WASP-128b BD? 11 31 26.0933641458 -41 41 22.299023767           ~ 19 0
33 TYC 7740-537-1 * 11 37 12.6890144256 -38 18 25.924598820   11.80 11.03     ~ 1 0
34 TOI-764b Pl? 11 37 12.6890144256 -38 18 25.924598820           ~ 1 0
35 EPIC 201702477.01 Pl? 11 40 57.7884018605 +03 40 53.646730450           ~ 13 0
36 CD-34 8618b Pl 13 04 10.5340634070 -35 32 58.321129314           ~ 18 0
37 TOI-1982b Pl? 13 50 20.3911201248 -23 23 00.062667564           ~ 1 0
38 BD-22 3669 * 13 50 20.3911201248 -23 23 00.062667564   11.06 10.55     ~ 2 0
39 NGTS-19B BD? 15 16 31.5959069782 -25 42 17.824831139           ~ 3 1
40 LP 563-38 EB* 15 46 04.3030642435 +04 41 30.066220912   17.1   15.0   M5.1 34 1
41 UGCS J160339.22-185129.4 EB* 16 03 39.2319975144 -18 51 29.400368220           M2.5e 24 0
42 TOI-2109b Pl? 16 52 44.7202666920 +16 34 47.839982988           ~ 6 0
43 CoRoT-33b Pl? 18 38 33.9101911792 +05 37 28.787049157           ~ 20 0
44 Kepler-486b Pl 18 59 31.1991510825 +49 16 01.170776185           ~ 31 0
45 G 205-57C BD? 19 10 14.284032 +46 57 24.10632           ~ 36 0
46 EPIC 219388192.01 Pl? 19 17 34.0313669245 -16 52 17.793013971           ~ 19 0
47 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 131 1
48 KOI-415b Pl? 19 33 13.4495838492 +41 36 22.965658614           ~ 37 0
49 Kepler-492b Pl 19 41 59.1967192074 +42 32 16.400829033           ~ 37 0
50 Kepler-39b Pl 19 47 50.4745660177 +46 02 03.499173435           ~ 60 1
51 HD 195689b Pl 20 31 26.3534038246 +39 56 19.765154336           ~ 218 0
52 HD 195689 SB* 20 31 26.3534153736 +39 56 19.773037500   7.59 7.56     A0 98 0
53 HD 201033b Pl? 21 04 48.8646767743 +55 35 16.509423144           ~ 11 0
54 HD 201585b Pl 21 10 12.3723474386 +10 44 19.944718883           ~ 34 0
55 TOI-1278b BD? 21 21 54.9403734715 +35 38 55.777318896           ~ 7 0
56 TOI-148.01 Pl? 22 33 16.961736 -38 09 34.98732           ~ 2 0
57 TOI-288b Pl? 22 41 13.8555082752 -28 01 57.594935784           ~ 1 0
58 HD 214829 * 22 41 13.8555082752 -28 01 57.594935784   9.85 9.36     F3V 4 0
59 NGTS-7Ab BD? 23 30 05.2358629579 -38 58 11.462828113           ~ 16 0
60 WASP-30b BD? 23 53 38.054 -10 07 05.12           ~ 41 1

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2023.01.27-22:01:13

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