2022AJ....163....3C

Query : 2022AJ....163....3C

2022AJ....163....3C - Astron. J., 163, 3-3 (2022/January-0)

A hot Mars-sized exoplanet transiting an M dwarf.

CANAS C.I., MAHADEVAN S., COCHRAN W.D., BENDER C.F., FEIGELSON E.D., HARMAN C.E., KOPPARAPU R.K., CACERES G.A., DIDDAMS S.A., ENDL M., FORD E.B., HALVERSON S., HEARTY F., JONES S., KANODIA S., LIN A.S.J., METCALF A.J., MONSON A., NINAN J.P., RAMSEY L.W., ROBERTSON P., ROY A., SCHWAB C. and STEFANSSON G.

Abstract (from CDS):

We validate the planetary nature of an ultra-short-period planet orbiting the M dwarf KOI-4777. We use a combination of space-based photometry from Kepler, high-precision, near-infrared Doppler spectroscopy from the Habitable-zone Planet Finder, and adaptive optics imaging to characterize this system. KOI-4777.01 is a Mars-sized exoplanet (Rp = 0.51 ± 0.03R⊕) orbiting the host star every 0.412 days (∼9.9 hr). This is the smallest validated ultra-short period planet known and we see no evidence for additional massive companions using our HPF RVs. We constrain the upper 3σ mass to Mp < 0.34 M⊕ by assuming the planet is less dense than iron. Obtaining a mass measurement for KOI-4777.01 is beyond current instrumental capabilities.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanets - Extrasolar rocky planets

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 NAME PM J03455+3706b Pl 03 45 33.6408895592 +37 06 43.999247912           ~ 34 0
2 PM J04343+4302 PM* 04 34 22.4953034088 +43 02 14.692100424   14.879 13.378 13.017   M2V 52 0
3 NAME PM J04343+4302b Pl 04 34 22.4953034088 +43 02 14.692100424           ~ 45 0
4 NAME G 162-44b Pl 10 18 35.1372361341 -11 43 00.243355403           ~ 44 0
5 NAME LP 791-18b Pl 11 02 45.9546199392 -16 24 22.288196376           ~ 21 0
6 Kepler-1971b Pl 19 09 02.9183523984 +42 01 56.227348812           ~ 12 0
7 Kepler-1971 Ro* 19 09 02.9183523984 +42 01 56.227348812           ~ 22 0
8 BD+41 3306e Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 46 0
9 BD+41 3306d Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 41 0
10 BD+41 3306 PM* 19 19 00.5489000285 +41 38 04.582441681 10.01 9.67 8.86 8.18 7.66 K0V 331 0
11 Kepler-138b Pl 19 21 31.5679755816 +43 17 34.680970608           ~ 71 0
12 NAME L 210-70b Pl 20 27 42.0813992356 -56 27 25.151894071           ~ 68 0
13 NAME L 119-213b Pl 22 41 58.1171811377 -69 10 08.320741850           ~ 146 0
14 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0

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