2004A&A...422..631B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST16:42:55

2004A&A...422..631B - Astronomy and Astrophysics, volume 422, 631-636 (2004/8-1)

High resolution spectroscopy of brown dwarfs in Taurus. Detection of accretion in KPNO-Tau-3.

BARRADO Y NAVASCUES D.

Abstract (from CDS):

We present high resolution optical spectroscopy of three candidate members of the Taurus-Auriga star forming region. Based on the spectral type, the strength, profile and width of the Hα line, the detected lithium at 6708Å, the location of these objects in the H-R diagram and the comparison with similar objects belonging to young stellar associations, we determine that they are bona fide members of the SFR with ages of ∼3Myr, and have masses at or below the substellar limit. At least in one case, there is active accretion from a circum(sub)stellar disk. This result suggests that high mass brown dwarfs go through a classical T Tauri phase and form, as stars do, from the collapse and fragmentation of a molecular cloud.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: Taurus - stars: brown dwarfs

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Cl Melotte 20 OpC 03 26 42 +48 48.0           ~ 757 0
2 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3024 0
3 [BLH2002] KPNO-Tau 3 LM* 04 26 29.3901723833 +26 24 13.722007135     20.239     M6Ve 43 0
4 [BLH2002] KPNO-Tau 5 LM* 04 29 45.6733565875 +26 30 46.559502443     19.690 19.10 15.08 M7.5Ve 47 0
5 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1227 0
6 2MASS J04321606+1812464 TT* 04 32 16.0655428266 +18 12 46.383508261   19.20 17.595     M6.5 73 0
7 [BLH2002] KPNO-Tau 8 Y*O 04 35 41.8388746981 +22 34 11.595178814 20.64   19.261     M6Ve 35 0
8 V* GM Tau Or* 04 38 21.3390129259 +26 09 13.784439336     17.577   15.04 M6.5 94 0
9 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 490 0
10 IC 2391 OpC 08 40 32 -53 02.0           ~ 723 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-16:42:55

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