2008MNRAS.386..416B

Query : 2008MNRAS.386..416B

2008MNRAS.386..416B - Mon. Not. R. Astron. Soc., 386, 416-424 (2008/May-1)

Two-Micron All-Sky Survey J01542930+0053266: a new eclipsing M dwarf binary system.

BECKER A.C., AGOL E., SILVESTRI N.M., BOCHANSKI J.J., LAWS C., WEST A.A., BASRI G., BELOKUROV V., BRAMICH D.M., CARPENTER J.M., CHALLIS P., COVEY K.R., CUTRI R.M., EVANS N.W., FELLHAUER M., GARG A., GILMORE G., HEWETT P., PLAVCHAN P., SCHNEIDER D.P., SLESNICK C.L., VIDRIH S., WALKOWICZ L.M. and ZUCKER D.B.

Abstract (from CDS):

We report on Two-Micron All-Sky Survey (2MASS) J01542930+0053266, a faint eclipsing system composed of two M dwarfs. The variability of this system was originally discovered during a pilot study of the 2MASS Calibration Point Source Working Data base. Additional photometry from the Sloan Digital Sky Survey yields an eight-passband light curve from which we derive an orbital period of 2.6390157±0.0000016 d. Spectroscopic followup confirms our photometric classification of the system, which is likely composed of M0 and M1 dwarfs. Radial velocity measurements allow us to derive the masses (M1= 0.66 ± 0.03Msolar; M2= 0.62±0.03Msolar) and radii (R1= 0.64±0.08Rsolar; R2= 0.61±0.09Rsolar) of the components, which are consistent with empirical mass-radius relationships for low-mass stars in binary systems. We perform Monte Carlo simulations of the light curves which allow us to uncover complicated degeneracies between the system parameters. Both stars show evidence of Hα emission, something not common in early-type M dwarfs. This suggests that binarity may influence the magnetic activity properties of low-mass stars; activity in the binary may persist long after the dynamos in their isolated counterparts have decayed, yielding a new potential foreground of flaring activity for next generation variability surveys.

Abstract Copyright: ©2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): binaries: eclipsing - stars: individual: 2MASS J01542930+0053266 - stars: low-mass, brown dwarfs

Simbad objects: 1

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Number of rows : 1
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 2MASS J01542930+0053266 EB* 01 54 29.3039596704 +00 53 26.697572880           M0+M1 19 0

Query : 2008MNRAS.386..416B

Basic data :
2MASS J01542930+0053266 -- Eclipsing Binary
Other object types: otypes_help 		EB* (2008MNRAS), * (Gaia), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		01 54 29.3039596704 +00 53 26.697572880 (Optical) [ 0.1515 0.1256 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		01 51 55.0994114180 +00 38 44.419370287 [ 0.1515 0.1256 90 ]
Gal coord. (ep=J2000) : 		153.9001520074239 -58.1386823444305 [ 0.1515 0.1256 90 ]
Proper motions mas/yr : 		8.215 -4.200 [0.241 0.148 90] A 2020yCat.1350....0G
Parallaxes (mas): 		0.9123 [0.1786] A 2020yCat.1350....0G
Spectral type: 		M0+M1 ~ 2008MNRAS.386..416B
Fluxes (9) :
G 17.952415 [0.003362] C 2020yCat.1350....0G
J 15.46 [0.06] C 2003yCat.2246....0C
H 14.81 [0.04] C 2003yCat.2246....0C
K 14.59 [0.07] C 2003yCat.2246....0C
u (AB) 21.70 [0.17] B 2009ApJS..182..543A
g (AB) 19.592 [0.014] B 2009ApJS..182..543A
r (AB) 18.219 [0.008] B 2009ApJS..182..543A
i (AB) 17.289 [0.007] B 2009ApJS..182..543A
z (AB) 16.755 [0.011] B 2009ApJS..182..543A
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Identifiers (6) :
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2MASS J01542930+0053266 SDSS J015429.30+005326.6 Gaia DR2 2510920275894228224
SDSS J015429.30+005326.7 TIC 422631910 Gaia DR3 2510920275894228224

References (19 between 1850 and 2026) (Total 19)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Var : 2    Plx : 2    PM : 2   

   

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Data at NED - NASA/IPAC Extragalactic Database : 2MASS J01542930+0053266

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2MASS J01542930+0053266 SDSS J015429.30+005326.7 SDSS J015429.30+005326.6 Gaia DR2 2510920275894228224 Gaia DR3 2510920275894228224

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