2013A&A...553A..30T

Query : 2013A&A...553A..30T

2013A&A...553A..30T - Astronomy and Astrophysics, volume 553A30-30 (2013/5-1)

CoRoT 101186644: a transiting low-mass dense M-dwarf on an eccentric 20.7-day period orbit around a late F-star. Discovered in the CoRoT lightcurves.

TAL-OR L., MAZEH T., ALONSO R., BOUCHY F., CABRERA J., DEEG H.J., DELEUIL M., FAIGLER S., FRIDLUND M., HEBRARD G., MOUTOU C., SANTERNE A. and TINGLEY B.

Abstract (from CDS):

We present the study of the CoRoT transiting planet candidate 101186644, also named LRc01E14780. Analysis of the CoRoT lightcurve and the HARPS spectroscopic follow-up observations of this faint (mV = 16) candidate revealed an eclipsing binary composed of a late F-type primary (Teff=6090±200K) and a low-mass, dense late M-dwarf secondary on an eccentric (e=0.4) orbit with a period of ∼20.7 days. The M-dwarf has a mass of 0.096±0.011M☉, and a radius of 0.104–0.006+0.026R☉, which possibly makes it the smallest and densest late M-dwarf reported so far. Unlike the claim that theoretical models predict radii that are 5-15% smaller than measured for low-mass stars, this one seems to have a radius that is consistent and might even be below the radius predicted by theoretical models.

Abstract Copyright: ∼

Journal keyword(s): planetary systems - stars: individual: CoRoT 101186644 - binaries: eclipsing - techniques: photometric - techniques: radial velocities

Simbad objects: 11

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Number of rows : 11
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 LP 588-25 EB* 01 38 51.4094210303 -00 16 21.889258632     18.14     M6V 34 0
2 2MASS J04463285+1901432 EB* 04 46 32.8622247312 +19 01 43.246330320   19.9 19.0     M 26 0
3 LSPM J0746+2000 BD* 07 46 42.56207 +20 00 32.1839       17.9 15.034 L0+L1.5 201 1
4 GALEX J085746.2+034255 RS* 08 57 46.1848948032 +03 42 55.352826180           DA+M 35 0
5 G 148-36 ** 12 10 10.2456244297 +33 47 24.124913024   16.9   15.6   DAZ+M 44 0
6 CD-39 7570 SB* 12 19 21.0336457752 -39 51 25.585123356   11.10 10.32     K0V 30 0
7 V* GK Vir ** 14 15 36.4128319176 +01 17 18.226779000   17.0       DAe+M 109 0
8 GALEX J154846.0+405728 WD* 15 48 46.0071409320 +40 57 28.797200712           DA+M6 34 0
9 V* NN Ser RS* 15 52 56.1203524080 +12 54 44.429312196     16.51     DAO1+M4 287 0
10 2MASS J19265907+0029061 EB* 19 26 59.0803024320 +00 29 06.220432644   17.092 16.049 15.670 14.934 F+D 12 0
11 2MASS J19265918+0029008 * 19 26 59.187 +00 29 00.90     19.08     ~ 1 0

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