2023RNAAS...7...50Z

Query : 2023RNAAS...7...50Z

2023RNAAS...7...50Z - Research Notes of the AAS, 7, 50 (2023/March-0)

Resolved Binaries with Late-M and L Dwarf Companions Identified in Gaia eDR3.

ZHOU T., JACOBSEN D., VAZQUEZ-SEGOVIA B., HSU C.-C., THEISSEN C.A. and BURGASSER A.J.

Abstract (from CDS):

We present a curated sample of 6688 resolved binaries containing M and L dwarf companions within 400 pc of the Sun, including 121 systems within 100 pc. These sources were selected from the Gaia EDR3 compilation of El-Badry et al., and further vetted using photometric and astrometric data from SDSS, Pan-STARRS, 2MASS, UKIDSS, and WISE, as well as visual examination of imaged fields. Only 13% of these systems were reported as co-moving pairs prior to Gaia, and only 4% of the primaries and 1% of the secondaries have published spectral classifications, including just 9 of 109 late-M and L dwarf secondaries within 100 pc. Follow-up of this expanded low-mass companion sample will provide valuable benchmark systems for precisely calibrating empirical diagnostics of the physical properties of the lowest-mass stars and brown dwarfs.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Binary stars - Companion stars - L dwarfs - M dwarf stars - Surveys

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 J22114123-1008179 BD* 22 11 41.2426988976 -10 08 18.293998128           L1.5 7 0

Query : 2023RNAAS...7...50Z

Basic data :
2MASS J22114123-1008179 -- Brown Dwarf
Other object types: otypes_help 		PM* (2016ApJ), BD* (2014ApJ), * (Gaia), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		22 11 41.2426988976 -10 08 18.293998128 (Optical) [ 0.8530 0.8567 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		22 09 01.8001490732 -10 22 55.304596687 [ 0.8530 0.8567 90 ]
Gal coord. (ep=J2000) : 		049.4582367034984 -48.7641628703069 [ 0.8530 0.8567 90 ]
Proper motions mas/yr : 		30.066 -255.744 [1.461 1.165 90] A 2020yCat.1350....0G
Parallaxes (mas): 		24.6902 [0.9063] A 2020yCat.1350....0G
Spectral type: 		L1.5 C 2014ApJ...792..119D
Fluxes (4) :
G 20.275772 [0.008581] C 2020yCat.1350....0G
J 15.246 [0.049] C 2003yCat.2246....0C
H 14.690 [0.063] C 2003yCat.2246....0C
K 14.051 [0.052] C 2003yCat.2246....0C
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Identifiers (5) :
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2MASS J22114123-1008179 WISEA J221141.25-100820.8 Gaia DR3 2615562725950286208
TIC 38156237 Gaia DR2 2615562725950286208

References (7 between 1850 and 2026) (Total 7)
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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Collections of Measurements Description of Measurements

Distance : 2    Plx : 2    PM : 4    SpT : 1   

   

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2MASS J22114123-1008179 WISEA J221141.25-100820.8 Gaia DR2 2615562725950286208 Gaia DR3 2615562725950286208

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