2000MNRAS.313L..23P


Query : 2000MNRAS.313L..23P

2000MNRAS.313L..23P - Mon. Not. R. Astron. Soc., 313, L23-L27 (2000/April-1)

The discovery of a low-mass, pre-main-sequence stellar association around γ Velorum.

POZZO M., JEFFRIES R.D., NAYLOR T., TOTTEN E.J., HARMER S. and KENYON M.

Abstract (from CDS):

We report the serendipitous discovery of a population of low-mass, pre-main-sequence (PMS) stars in the direction of the Wolf-Rayet/O-star binary system γ2Vel and the Vela OB2 association. We argue that γ2Vel and the low-mass stars are truly associated and approximately coeval, and that both are at distances between 360 and 490pc, disagreeing at the 2σ level with the recent Hipparcos parallax of γ2Vel, but consistent with older distance estimates. Our results clearly have implications for the physical parameters of the γ2Vel system, but also offer an exciting opportunity to investigate the influence of high-mass stars on the mass function and circumstellar disc lifetimes of their lower mass PMS siblings.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): stars: pre-main-sequence - stars: Wolf-Rayet - X-rays: stars

Simbad objects: 6

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Number of rows : 6
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 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
2 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
3 * gam01 Vel Y*O 08 09 29.3175369840 -47 20 43.013412312   3.995 4.173     B2III 158 0
4 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 951 0
5 * eta Cha Pu* 08 41 19.5125857944 -78 57 48.105898056 5.02 5.351 5.453     B8V 246 0
6 * bet Cru bC* 12 47 43.26877 -59 41 19.5792 0.03 1.02 1.25 1.38 1.64 B1IV 360 1

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