2022A&A...666A..10E

Query : 2022A&A...666A..10E

2022A&A...666A..10E - Astronomy and Astrophysics, volume 666A10 (2022/10-1)

A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs Color validation of TOI-4479b and TOI-2081b.

ESPARZA-BORGES E., PARVIAINEN H., MURGAS F., PALLE E., MAAS A., MORELLO G., ZAPATERO-OSORIO M.R., BARKAOUI K., NARITA N., FUKUI A., CASASAYAS-BARRIS N., OSHAGH M., CROUZET N., GALAN D., FERNANDEZ G.E., KAGETANI T., KAWAUCHI K., KODAMA T., KORTH J., KUSAKABE N., LAZA-RAMOS A., LUQUE R., LIVINGSTON J., MADRIGAL-AGUADO A., MORI M., ORELL-MIQUEL J., PUIG-SUBIRA M., STANGRET M., TERADA Y., WATANABE N., ZOU Y., SAVEL A.B., BELINSKI A.A., COLLINS K., DRESSING C.D., GIACALONE S., GILL H., GOLIGUZOVA M.V., IKOMA M., JENKINS J.M., TAMURA M., TWICKEN J.D., RICKER G.R., SCHWARZ R.P., SEAGER S., SHPORER A., VANDERSPEK R. and WINN J.

Abstract (from CDS):


Aims. We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b.
Methods. We jointly analyzed space (TESS mission) and ground-based (MuSCAT2, MuSCAT3 and SINISTRO instruments) light curves using our multicolor photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions.
Results. We found TOI-4479b to be a sub-Neptune-sized planet (Rp = 2.82–0.63+0.65R⊕) and TOI-2081b to be a super-Earth-sized planet (Rp = 2.04–0.54+0.50R⊕). Furthermore, we obtained that TOI-4479b, with a short orbital period of 1.15890–0.00001+0.00002 days, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date.
Conclusions. These results make TOI-4479b rare among the currently known exoplanet population of M dwarf stars and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.

Abstract Copyright: © E. Esparza-Borges et al. 2022

Journal keyword(s): planets and satellites: individual: TOI-4479b - planets and satellites: individual: TOI-2081b - methods: observational - techniques: photometric - planets and satellites: general - planets and satellites: detection

Simbad objects: 14

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Number of rows : 14
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 TOI-849b Pl 01 54 51.7040408544 -29 25 18.468394788           ~ 59 0
2 NAME G 160-62b Pl 04 16 45.6004345224 -12 05 02.454740268           ~ 28 0
3 G 160-62 PM* 04 16 45.6004345224 -12 05 02.454740268   14.3 12.492 12.104   M1V 51 0
4 HATS-38b Pl 10 17 05.0796793008 -25 16 34.558507560           ~ 16 0
5 TOI-674b Pl 10 58 20.9850496085 -36 51 29.136045782           ~ 34 0
6 HATS-37b Pl 13 19 12.4637799216 -22 59 12.732921312           ~ 8 0
7 NAME SCR J1448-5735b Pl 14 48 39.8126986608 -57 35 17.557434564           ~ 28 0
8 BD+26 2606 SB* 14 49 02.3593347728 +25 42 09.192358874 9.92 10.16 9.73 9.27 8.95 A5 383 0
9 TOI-2081 PM* 17 37 12.7357669344 +53 01 32.531697480   14.870 13.369 12.993   M1 13 0
10 TOI-2081b Pl 17 37 12.7357669344 +53 01 32.531697480           ~ 5 0
11 TOI-4479 PM* 21 04 23.1618162316 +24 39 15.102672052     15.2 14.785   M3 7 0
12 TOI-4479b Pl 21 04 23.1618162316 +24 39 15.102672052           ~ 7 0
13 CD-44 14956b Pl 22 33 35.8684307688 -43 26 11.916565332           ~ 22 0
14 CD-38 15670b Pl 23 54 40.2073116552 -37 37 40.524416508           ~ 79 0

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