The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri

Details The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..221b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Jan. 15, 1992, p. 221-227. Research supported by S

Astronomy and Astrophysics

Astronomy

11

Globular Clusters, Interstellar Gas, Stellar Spectra, Astronomical Spectroscopy, Molecular Clouds, Radial Velocity, Spectral Line Width

Scientific paper

High-resolution spectra of Na I interstellar lines are presented for 16 stars in the globular cluster Omega Cen and for a closer star (HD 116226) approximately 1 deg from the cluster. Toward the cluster stars there are four identified groups of components at the approximate velocities V(LSR) = -3, -15, -34 and -42 km/s. There is variation in the detailed velocity structure of the gas across the face of the cluster on an angular scale not greater than 1 arcmin, especially in the higher velocity components. From the present data and from interstellar gas surveys toward nearby stars, it appears that the bulk of the gas toward the distant cluster stars lies beyond the large expanding Sco-Cen shell and the flow of local interstellar material discussed by Crutcher (1984). The origin of the observed absorption features remains uncertain. However, it is suggested that the components having low LSR radial velocities are produced by gas associated with the local ridge of molecular clouds mapped by Dame et al.(1987), and that the higher velocity components arise in the outlying gas in the Carina spiral arm.

Affiliated with

Also associated with

No associations

Rating

The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The velocity structure of the interstellar gas towards stars in the globular cluster Omega Centauri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-938855