Neutral-hydrogen emission features in Scorpius and Ophiuchus and the origin of SCO OB 2

Details Neutral-hydrogen emission features in Scorpius and Ophiuchus and the origin of SCO OB 2 Neutral-hydrogen emission features in Scorpius and Ophiuchus and the origin of SCO OB 2

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....95..316o&link_type=abstract

Astronomy and Astrophysics, vol. 95, no. 2, Mar. 1981, p. 316-320. Research supported by the Comision de Investigaciones Cienti

Astronomy and Astrophysics

Astrophysics

10

Early Stars, Emission Spectra, Hydrogen Clouds, Interstellar Gas, Neutral Gases, Line Spectra, Radial Velocity, Sodium, Stellar Evolution

Scientific paper

The paper presents observations of a feature of filamentary shape in Scorpius and Ophiuchus in the longitude range of 350-338 deg at positive latitudes. The average value for its radial velocity and its dispersion are -12.3 plus or minus 1.1 km/s and 2.7 plus or minus 0.8 km/s respectively. Its H I mass is 175 solar masses if a distance of 150 pc is assumed. In addition, a sequence of events different from that described by Sancisi (1974) for the formation of the young association Sco OB 2 is proposed.

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