2021AJ....161...13W

Query : 2021AJ....161...13W

2021AJ....161...13W - Astron. J., 161, 13-13 (2021/January-0)

TOI 122b and TOI 237b: two small warm planets orbiting inactive M dwarfs found by TESS.

WAALKES W.C., BERTA-THOMPSON Z.K., COLLINS K.A., FEINSTEIN A.D., TOFFLEMIRE B.M., ROJAS-AYALA B., SILVERSTEIN M.L., NEWTON E., RICKER G.R., VANDERSPEK R., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., CHRISTIANSEN J., GOEKE R.F., LEVINE A.M., OSBORN H.P., RINEHART S.A., ROSE M.E., TING E.B., TWICKEN J.D., BARKAOUI K., BEAN J.L., BRICENO C., CIARDI D.R., COLLINS K.I., CONTI D., GAN T., GILLON M., ISOPI G., JEHIN E., JENSEN E.L.N., KIELKOPF J.F., LAW N., MALLIA F., MANN A.W., MONTET B.T., POZUELOS F.J., RELLES H., LIBBY-ROBERTS J.E. and ZIEGLER C.

Abstract (from CDS):

We report the discovery and validation of TOI 122b and TOI 237b, two warm planets transiting inactive M dwarfs observed by the Transiting Exoplanet Survey Satellite (TESS). Our analysis shows that TOI 122b has a radius of 2.72 ± 0.18 R⊕ and receives 8.8 ± 1.0 times Earth's bolometric insolation, and TOI 237b has a radius of 1.44±0.12 R⊕ and receives 3.7 ± 0.5 times Earth's insolation, straddling the 6.7 x Earth insolation that Mercury receives from the Sun. This makes these two of the cooler planets yet discovered by TESS, even on their 5.08 and 5.43 day orbits. Together, they span the small-planet radius valley, providing useful laboratories for exploring volatile evolution around M dwarfs. Their relatively nearby distances (62.23 ± 0.21 pc and 38.11 ± 0.23 pc, respectively) make them potentially feasible targets for future radial velocity follow-up and atmospheric characterization, although such observations may require substantial investments of time on large telescopes.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Mini Neptunes - Exoplanets - Transits - M stars - Super Earths

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME BD-17 588Ab Pl 03 01 51.3936681048 -16 35 36.031178525           ~ 52 0
2 L 231-32 PM* 04 33 39.7200127728 -51 57 22.435373160     12.617 12.147   M3.0V 53 0
3 L 98-59 PM* 08 18 07.6214406393 -68 18 46.805365587   13.22 11.685 11.294   M3V 91 0
4 G 9-40 LP* 08 58 52.3297250887 +21 04 34.200161052   15.477 13.821 13.427   M2V 23 0
5 L 678-39 EB* 09 36 01.6372169407 -21 39 38.877606712 13.647 12.48 10.906 9.858 8.577 M2.5V 159 0
6 NAME L 320-124b Pl 10 14 51.7786855411 -47 09 24.192778106           ~ 169 0
7 LP 791-18 PM* 11 02 45.9546199392 -16 24 22.288196376           M6V 28 0
8 TOI-122b Pl 22 11 47.2993627416 -58 56 42.251593524           ~ 4 0
9 WT 880 PM* 22 11 47.2993627416 -58 56 42.251593524   16.0       ~ 13 0
10 NAME L 119-213b Pl 22 41 58.1171811377 -69 10 08.320741850           ~ 103 0
11 CD-60 8051b Pl 23 20 07.5245143451 -60 03 54.644648069           ~ 39 0
12 TOI-237b Pl 23 32 58.2700309449 -29 24 54.190916756           ~ 11 0
13 LEHPM 5926 PM* 23 32 58.2700309449 -29 24 54.190916756           ~ 12 0

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