2018MNRAS.474.5523S

Query : 2018MNRAS.474.5523S

2018MNRAS.474.5523S - Mon. Not. R. Astron. Soc., 474, 5523-5533 (2018/March-2)

K2-137 b: an Earth-sized planet in a 4.3-h orbit around an M-dwarf.

SMITH A.M.S., CABRERA J., CSIZMADIA S., DAI F., GANDOLFI D., HIRANO T., WINN J.N., ALBRECHT S., ALONSO R., ANTONICIELLO G., BARRAGAN O., DEEG H., EIGMULLER P., ENDL M., ERIKSON A., FRIDLUND M., FUKUI A., GRZIWA S., GUENTHER E.W., HATZES A.P., HIDALGO D., HOWARD A.W., ISAACSON H., KORTH J., KUZUHARA M., LIVINGSTON J., NARITA N., NESPRAL D., NOWAK G., PALLE E., PATZOLD M., PERSSON C.M., PETIGURA E., PRIETO-ARRANZ J., RAUER H., RIBAS I. and VAN EYLEN V.

Abstract (from CDS):

We report the discovery in K2's Campaign 10 of a transiting terrestrial planet in an ultra-short-period orbit around an M3-dwarf. K2-137 b completes an orbit in only 4.3 h, the second shortest orbital period of any known planet, just 4 min longer than that of KOI 1843.03, which also orbits an M-dwarf. Using a combination of archival images, adaptive optics imaging, radial velocity measurements, and light-curve modelling, we show that no plausible eclipsing binary scenario can explain the K2 light curve, and thus confirm the planetary nature of the system. The planet, whose radius we determine to be 0.89 ± 0.09 R⊕, and which must have an iron mass fraction greater than 0.45, orbits a star of mass 0.463 ± 0.052 M☉ and radius 0.442 ± 0.044 R☉.

Abstract Copyright: © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planets and satellites: detection - planets and satellites: individual: K2-137 b

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 CoRoT-7b Pl 06 43 49.4690164104 -01 03 46.826642700           ~ 422 1
2 WASP-43b Pl 10 19 38.0088913464 -09 48 22.605801336           ~ 442 1
3 HD 95735 PM* 11 03 20.1948195942 +35 58 11.576182057 10.030 8.960 7.520 5.99 4.79 M2+V 795 0
4 2MASS J12272341-0613291 * 12 27 23.4130232976 -06 13 29.157686580           ~ 1 0
5 K2-137b Pl 12 27 28.9846732536 -06 11 42.831206628           ~ 31 0
6 K2-137 PM* 12 27 28.9846732536 -06 11 42.831206628   17.007 15.498     M3V 12 0
7 2MASS J12272946-0610560 * 12 27 29.4601851408 -06 10 55.972168644           ~ 2 0
8 2MASS J12273271-0612143 * 12 27 32.7144271488 -06 12 14.334717060           ~ 2 0
9 * q Vir PM* 12 33 46.7485436339 -09 27 07.478534302   5.45 5.48     B9V 79 0
10 BD-04 3588b Pl 13 55 05.7031605792 -05 26 32.949326652           ~ 28 0
11 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
12 KOI-1843.03 Pl 19 00 03.1451105376 +40 13 14.798618364           ~ 33 0
13 Kepler-78 EB* 19 34 58.0137407208 +44 26 53.960186940   12.87 11.72     K2.5V 98 1
14 Kepler-78b Pl 19 34 58.0137407208 +44 26 53.960186940           ~ 153 1

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