SIMBAD references

1998A&A...333..619P - Astronomy and Astrophysics, volume 333, 619-628 (1998/5-2)

A lithium-survey for pre-main sequence stars in the Upper Scorpius OB association.

PREIBISCH T., GUENTHER E., ZINNECKER H., STERZIK M., FRINK S. and ROESER S.

Abstract (from CDS):

We present the results of an intermediate resolution spectroscopic survey for pre-main sequence (PMS) stars in the Upper Scorpius OB association. In a 160 square-degree area we were able to identify 39 new PMS stars by follow up observations of X-ray selected stars with the multi object spectrograph FLAIR at the UK Schmidt Telescope. We also investigated the completeness of our X-ray selected sample by observing more than 100 stars that were not detected as X-ray sources, but have proper motions indicating membership to Upper Sco. While the new X-ray selected PMS stars with known proper motions have kinematics consistent with membership, none of the X-ray quiet proper motion candidates is a PMS star. We conclude that our X-ray selected sample of PMS stars seems to be rather complete. For stars in the magnitude interval 11.5≲B≲13.5 we derive a conservative lower limit of 75% completeness.

Abstract Copyright:

Journal keyword(s): surveys - stars: kinematics - stars: pre-main sequence - open clusters and associations: individual: Sco-Cen association - X-rays: stars

VizieR on-line data: <Available at CDS (J/A+A/333/619): tablea1.dat tablea2.dat>

Simbad objects: 198

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