2002ApJ...581L..47L


Query : 2002ApJ...581L..47L

2002ApJ...581L..47L - Astrophys. J., 581, L47-L50 (2002/December-2)

Discovery of an M8.5 dwarf with proper motion µ = 2".38 Per year.

LEPINE S., RICH R.M., NEILL J.D., CAULET A. and SHARA M.M.

Abstract (from CDS):

We report the discovery of LSR 1826+3014, a very faint (V=19.36) star with a very large proper motion (µ=2".38 yr–1). A low-resolution red spectrum reveals that LSR 1826+3014 is an ultracool red dwarf with spectral type M8.5 V and with a radial velocity vrad=+77±10 km.s–1. LSR 1826+3014 is thus the faintest red dwarf ever discovered with a proper motion larger than 2" yr–1. Optical and infrared photometry suggest that the star is at a distance d=13.9±3.5 pc from the Sun, which implies that it is moving relative to the local standard of rest with a total velocity of 175±25 km .s–1. The numerical integration of its orbit suggests that LSR 1826+3014 is on a halo-like Galactic orbit.

Abstract Copyright:

Journal keyword(s): Galaxy: Halo - Galaxy: Solar Neighborhood - Stars: Kinematics - Stars: Low-Mass, Brown Dwarfs

Nomenclature: LSR JHHMM+DDMM N=1 added.

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 [IIB2000] F351-50 WD* 00 45 17.796 -33 29 10.81     19.37 18.25   DA 27 0
2 Ross 451 LM* 11 40 20.3054683893 +67 15 32.361929733   12.291   11.2   esdM0 61 0
3 NAME ER 8 WD* 13 12 56.4722068455 -47 28 07.911725081   18.45 17.11 16.32 15.72 DC 33 0
4 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1081 0
5 NAME Barnard's star BY* 17 57 48.4997994034 +04 41 36.111354228 12.497 11.24 9.511 8.298 6.741 M4V 710 2
6 LSR J1826+3014 LM* 18 26 11.0029385035 +30 14 18.873498048     19.36 17.8   M8.5V 20 1
7 V* X Oph Mi* 18 38 21.1317164384 +08 50 02.799217980 8.61 7.72 6.40     M0-8e+K2:III 270 1

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2021.10.27-22:09:21

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