2008MNRAS.388..495H

Query : 2008MNRAS.388..495H

2008MNRAS.388..495H - Mon. Not. R. Astron. Soc., 388, 495-499 (2008/August-1)

L dwarfs in the Hyades.

HOGAN E., JAMESON R.F., CASEWELL S.L., OSBOURNE S.L. and HAMBLY N.C.

Abstract (from CDS):

We present the results of a proper motion survey of the Hyades to search for brown dwarfs, based on UKIRT Deep Sky Survey (UKIDSS) and Two-Micron All Sky Survey (2MASS) data. This survey covers ∼275deg2 to a depth of K ∼ 15 mag, equivalent to a mass of ∼0.05M☉ assuming a cluster age of 625 Myr. The discovery of 12 L dwarf Hyades members is reported. These members are also brown dwarfs, with masses between 0.05 < M < 0.075M☉. A high proportion of these L dwarfs appear to be photometric binaries.

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

Journal keyword(s): stars: low-mass, brown dwarfs - open clusters and associations: individual: Hyades

Nomenclature: Table 1: [HJC2008] NN (Nos 1-12).

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 Cl Melotte 20 OpC 03 26 28.1 +48 58 30           ~ 861 0
2 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3436 0
3 2MASS J03524627+2112332 BD* 03 52 46.27488 +21 12 33.2964           L1.5 7 0
4 2MASS J03554191+2257016 BD* 03 55 41.91504 +22 57 01.6776           L3V 20 0
5 2MASS J03584293+1039396 BD* 03 58 42.93408 +10 39 39.6936           L3.0 4 0
6 2MASS J04102390+1459104 BD* 04 10 23.9122101672 +14 59 10.346509824           L0.5 12 0
7 2MASS J04173384+1430156 BD* 04 17 33.84624 +14 30 15.6816           L1.0 7 0
8 2MASS J04202441+2356134 LM* 04 20 24.4362372288 +23 56 13.118558136       20.6 18.4 M8.5 8 0
9 2MASS J04220512+1358474 LM* 04 22 05.1317334936 +13 58 47.303125212           M9.5 12 0
10 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3076 0
11 2MASS J04354290+1323449 BD* 04 35 42.90264 +13 23 44.9916           L3.5 9 0
12 2MASS J04392907+1957351 LM* 04 39 29.07552 +19 57 35.1180           M3 3 0
13 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4417 0
14 2MASS J04421852+1754378 LM* 04 42 18.5323137936 +17 54 37.794602376           M9.5 7 0
15 2MASS J04463535+1451261 BD* 04 46 35.35200 +14 51 26.1864           L2.0 9 0
16 2MASS J04584566+1212343 BD* 04 58 45.6712228512 +12 12 34.302175884           L0.5 10 0
17 2MASS J12171110-0311131 BD* 12 17 11.10288 -03 11 13.1748           T7.5 85 0
18 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 439 2
19 NAME Upper Sco Association As* 16 12 -23.4           ~ 1369 1
20 NAME Hyades Moving Group MGr ~ ~           ~ 281 0

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