The stellar association around Gamma Velorum and its relationship with Vela OB2

@article{Jeffries2009TheSA,
  title={The stellar association around Gamma Velorum and its relationship with Vela OB2},
  author={R D Jeffries and Tim Naylor and Frederick M. Walter and Monica Pozzo and Cambridge University and University of Exeter and Suny and Stony Brook and University College and London},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2009},
  volume={393},
  pages={538-556}
}
We present the results of a photometric BVI survey of 0.9 deg 2 around the Wolf-Rayet binary γ 2 Vel and its early-type common proper motion companion γ 1 Vel (together referred to as the y Vel system). Several hundred pre-main-sequence (PMS) stars are identified and the youth of a subset of these is spectroscopically confirmed by the presence of lithium in their atmospheres, Ha emission and high levels of X-ray activity. We show that the PMS stars are kinematically coherent and spatially… 
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References

SHOWING 1-10 OF 60 REFERENCES
The discovery of a low-mass, pre-main-sequence stellar association around γ Velorum
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 gamma(2) Vel and the Vela OB2 association. We
A Spitzer View of Protoplanetary Disks in the γ Velorum Cluster
We present new Spitzer Space Telescope observations of stars in the young (~5 Myr) γ Velorum stellar cluster. Combining optical and 2MASS photometry, we have selected 579 stars as candidate members
Fundamental Stellar Parameters of γ2 Velorum from HIPPARCOS Data
We report parallax measurements by the HIPPARCOS satellite of γ2 Velorum and a few related objects. The distance of γ2 Vel is d = 258+ 41−31 pc, significantly smaller than the commonly adopted value
25 Orionis: A Kinematically Distinct 10 Myr Old Group in Orion OB1a
We report here on the photometric and kinematic properties of a well-defined group of nearly 200 low-mass pre-main-sequence stars, concentrated within ~1° of the early-B star 25 Ori, in the Orion
Stellar evolution with rotation X: Wolf-Rayet star populations at solar metallicity
We examine the properties of Wolf-Rayet (WR) stars predicted by models of rotating stars taking account of the new mass loss rates for O-type stars and WR stars (Vink et al. 2000. 2001; Nugis &
Cepheus OB2: Disk Evolution and Accretion at 3-10 Myr
We present the results of MMT observations of young stars for our study of protoplanetary disks at ages 1–10 Myr in two young clusters located in the Cepheus OB2 region: Trumpler 37 (embedded in the
A Hipparcos Census of the Nearby OB Associations
A comprehensive census of the stellar content of the OB associations within 1 kpc from the Sun is presented, based on Hipparcos positions, proper motions, and parallaxes. It is a key part of a
A survey of interstellar H I from L-alpha absorption measurements. II
The Copernicus satellite surveyed the spectral region near L alpha to obtain column densities of interstellar HI toward 100 stars. The distance to 10 stars exceeds 2 kpc and 34 stars lie beyond 1
Very Low Mass Stars and Brown Dwarfs in Taurus-Auriga
We present high-resolution optical spectra obtained with the HIRES spectrograph on the W. M. Keck I Telescope of seven low-mass T Tauri stars (LMTTs) and brown dwarfs in Taurus-Auriga. The observed
Thermal Dust Emission from Proplyds, Unresolved Disks, and Shocks in the Orion Nebula
We present a new 11.7 μm mosaic image of the inner Orion Nebula obtained with the T-ReCS instrument on Gemini South. The map covers 2.′7 × 1.′6, with a diffraction-limited spatial resolution of
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