2010ApJ...715L.165R

Query : 2010ApJ...715L.165R

2010ApJ...715L.165R - Astrophys. J., 715, L165-L170 (2010/June-1)

The lowest-mass member of the β Pictoris moving group.

RICE E.L., FAHERTY J.K. and CRUZ K.L.

Abstract (from CDS):

We present spectral and kinematic evidence that 2MASS J06085283-2753583 (M8.5γ) is a member of the β Pictoris Moving Group (BPMG, age ∼12 Myr), making it the latest-type known member of this young, nearby association. We confirm low-gravity spectral morphology at both medium and high resolutions in the near-infrared. We present new radial velocity and proper motion measurements, and use these to calculate galactic location and space motion consistent with other high-probability members of the BPMG. The predicted mass range consistent with the object's effective temperature, surface gravity, spectral type, and age is 15-35 MJup, placing 2MASS 0608-27 well within the brown dwarf mass regime. 2MASS J06085283-2753583 is thus confidently added to the short list of very low mass, intermediate age benchmark objects that inform ongoing searches for the lowest-mass members of nearby young associations.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - infrared: stars - open clusters and associations: individual: β Pictoris - stars: individual: 2MASS J06085283-2753583 - stars: late-type - techniques: spectroscopic

Simbad objects: 25

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Number of rows : 25
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 NAME THA MGr 00 00 -62.0           ~ 540 0
2 DENIS J004135.3-562112 LM* 00 41 35.3862348768 -56 21 12.872262132       17.97 14.69 M7.5e 39 0
3 LSPM J0140+2701 LM* 01 40 02.6489554032 +27 01 50.012455728   20.1   18.3   M8.5V 28 0
4 LP 412-31 LM* 03 20 59.7114769400 +18 54 22.770750621   20.5 18.881 16.904 14.484 M8V 130 0
5 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
6 Cl* Melotte 22 TEIDE 1 LM* 03 47 17.9147300712 +24 22 31.746313740         19.26 M8.0 107 0
7 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
8 2MASS J05233822-1403022 BD* 05 23 38.2236232872 -14 03 02.017758240           L2.5 75 0
9 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
10 2MASS J06085283-2753583 BD* 06 08 52.8338339568 -27 53 58.315264152         17.011 M9.6V 55 0
11 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
12 HD 52487 * 07 00 22.0547241624 -26 32 51.756900432   8.14 7.98     A0V 9 0
13 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
14 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
15 2MASS J11553952-3727350 BD* 11 55 39.5361849740 -37 27 35.503012522           L2e 47 0
16 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
17 TWA 27 LM* 12 07 33.4675524840 -39 32 54.016625184     19.95 17.99 15.88 M8IVe 376 0
18 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
19 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
20 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
21 * eta Tel PM* 19 22 51.2060774616 -54 25 26.145617376   5.035 5.020   4.99 A0V 228 0
22 * eta Tel B LM* 19 22 51.3580284238 -54 25 31.569876496           M7.5V 78 0
23 NAME Octans Association As* ~ ~           ~ 101 0
24 NAME Argus Association As* ~ ~           ~ 266 0
25 NAME Carina Moving Group MGr ~ ~           ~ 66 0

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