2024A&A...690A..62P

Query : 2024A&A...690A..62P

2024A&A...690A..62P - Astronomy and Astrophysics, volume 690A62 (2024/10-1)

Validation of up to seven TESS planet candidates through multi-colour transit photometry using MuSCAT2 data.

PELAEZ-TORRES A., ESPARZA-BORGES E., PALLE E., PARVIAINEN H., MURGAS F., MORELLO G., ZAPATERO-OSORIO M.R., KORTH J., NARITA N., FUKUI A., CARLEO I., LUQUE R., ABREU GARCIA N., BARKAOUI K., BOYLE A., BEJAR V.J.S., CALATAYUD-BORRAS Y., CHERYASOV D.V., CHRISTIANSEN J.L., CIARDI D.R., ENOC G., ESSACK Z., FUKUDA I., FURESZ G., GALAN D., GERALDIA-GONZALEZ S., GIACALONE S., GILL H., GONZALES E.J., HAYASHI Y., IKUTA K., ISOGAI K., KAGETANI T., KAWAI Y., KAWAUCHI K., KLAGYVIK P., KODAMA T., KUSAKABE N., LAZA-RAMOS A., DE LEON J.P., LIVINGSTON J.H., LUND M.B., MADRIGAL-AGUADO A., MENI P., MORI M., TORRES S.M., ORELL-MIQUEL J., PUIG M., RICKER G., SANCHEZ-BENAVENTE M., SAVEL A.B., SCHLIEDER J.E., SCHWARZ R.P., SEFAKO R., SOSA-GUILLEN P., STANGRET M., STOCKDALE C., TAMURA M., TERADA Y., TWICKEN J.D., WATANABE N., WINN J., ZHELTOUKHOV S.G., ZIEGLER C. and ZOU Y.

Abstract (from CDS):

The TESS mission searches for transiting exoplanets by monitoring the brightness of hundreds of thousands of stars across the entire sky. M-type planet hosts are ideal targets for this mission due to their smaller size and cooler temperatures, which makes it easier to detect smaller planets near or within their habitable zones. Additionally, M dwarfs have a smaller contrast ratio between the planet and the star, making it easier to measure the planet's properties accurately. Here, we report the validation analysis of 13 TESS exoplanet candidates orbiting around M dwarfs. We studied the nature of these candidates through a multi-colour transit photometry transit analysis using several ground-based instruments (MuSCAT2, MuSCAT3, and LCO-SINISTRO), high-spatial resolution observations, and TESS light curves. We present the validation of five new planetary systems: TOI-1883b, TOI-2274b, TOI-2768b, TOI-4438b, and TOI-5319b, along with compelling evidence of a planetary nature for TOIs 2781b and 5486b. We also present an empirical definition for the Neptune desert boundaries. The remaining six systems could not be validated due to large true radius values overlapping with the brown dwarf regime or, alternatively, the presence of chromaticity in the MuSCAT2 light curves.

Abstract Copyright: © The Authors 2024

Journal keyword(s): methods: observational - techniques: photometric - planets and satellites: detection - planets and satellites: general

Simbad objects: 24

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Number of rows : 24
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-5319 ** 02 20 51.19560 +23 31 14.9808           M3.0 3 0
2 TOI-5319b Pl 02 20 51.2060520434 +23 31 14.929218114           ~ 4 0
3 TOI-5344b Pl 04 13 03.8473531015 +20 54 54.908626629           ~ 14 0
4 TOI-2781 * 05 51 16.9367241823 -13 22 51.380961626   16.045 14.647 14.246   M1.0 2 0
5 TOI-2781.01 Pl? 05 51 16.9367241823 -13 22 51.380961626           ~ 3 0
6 TOI-2768b Pl 06 37 27.4806794712 -15 28 53.651177544           ~ 2 0
7 TOI-2768 PM* 06 37 27.4806794712 -15 28 53.651177544   14.17 12.81 12.34   M0.0 4 0
8 TOI-1883 * 08 56 21.3863157307 -12 55 50.361630587   16.885 15.639 15.305   ~ 8 0
9 TOI-1883b Pl 08 56 21.3863157307 -12 55 50.361630587           ~ 3 0
10 TOI-2603.01 Pl? 09 30 16.0361951904 -18 50 35.315080512           ~ 1 0
11 TOI-2603 * 09 30 16.0361951904 -18 50 35.315080512   16.629 15.296 15.397   M1.0 6 0
12 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 831 0
13 TOI-5464.01 Pl? 10 35 06.1317332411 +19 07 05.826176505           ~ 1 0
14 TOI-5641.01 Pl? 12 03 38.2545459138 +42 32 15.375056589           ~ 1 0
15 TOI-5486 PM* 12 42 11.9428837999 +03 47 20.464701965   15.668 14.256 13.953   M2.5 4 0
16 TOI-5486.01 Pl? 12 42 11.9428837999 +03 47 20.464701965           ~ 2 0
17 TOI-5268.01 Pl? 15 16 01.5049943379 +62 43 06.045493660           ~ 3 0
18 G 182-34 PM* 18 01 16.1002287008 +35 35 50.495366783   14.90   13.327   M3.5Ve 32 0
19 G 182-34b Pl 18 01 16.1002287008 +35 35 50.495366783           ~ 6 0
20 SDSS J182950.09+403231.9 * 18 29 50.0996284507 +40 32 31.977418221           ~ 1 0
21 StKM 1-1621 PM* 18 29 50.2548805224 +40 32 27.717320112   13.42 11.74     K6 10 0
22 StKM 1-1621b Pl 18 29 50.2548805224 +40 32 27.717320112           ~ 3 0
23 TOI-5205b Pl 20 55 04.9163832653 +24 21 38.710082580           ~ 25 0
24 BD+17 4708 SB* 22 11 31.3756832854 +18 05 34.177983548 9.73 9.91 9.46 9.03 8.70 sdF8 580 0

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