Young low mass stars in the vicinity of Sigma Scorpii

Details Young low mass stars in the vicinity of Sigma Scorpii Young low mass stars in the vicinity of Sigma Scorpii

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..619m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 2, p. 619-629.

Astronomy and Astrophysics

Astronomy

15

Early Stars, H Alpha Line, Infrared Photometry, Scorpius Constellation, Star Formation, Stellar Mass, Astronomical Catalogs, Giant Stars, Infrared Astronomy Satellite, Ophiuchi Clouds, Sky Surveys (Astronomy)

Scientific paper

The region near Sigma Scorpii, a member of the Sco-Cen OB association, is examined for signs of recent star formation. Thirteen candidate young stellar objects are identified over an 80 x 80 arcmin region centered on Sigma Sco using the Point source Catalog and a recent survey for H-alpha emission-line stars. Near-infrared photometry, improved IRAS fluxes, and optical spectra are used to determine the nature of these objects. Four definite young stars are revealed, as well as one additional such object that fell just outside of the present target region. These stars, all of spectral type K or M, are argued to have formed in the vicinity of the B1 giant star Sigma Scorpii and to represent a subsample of the low-mass members of the association.

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