The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association

Details The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...413..225g&link_type=abstract

Astronomy and Astrophysics, v.413, p.225-231 (2004)

Astronomy and Astrophysics

Astrophysics

4

Ism: General, Stars: Individual: Wr 65, Stars: Individual: Wr 67, Stars: Wolf-Rayet

Scientific paper

We have investigated the neutral hydrogen in the direction of the Circinus OB1 association with particular emphasis in the study of the vicinity of the WR stars WR 65 and WR 67. The HI line data were obtained with the Australia Telescope Compact Array with a synthesized beam of 4\farcm0 × 2\farcm7 and a velocity resolution of 1.1 km s-1. These data led to the discovery of a large cavity surrounded by an almost complete shell in agreement with the locations and distances of the two WR stars. We propose that the HI features constitute an interstellar bubble created by the powerful winds of the WR stars and their progenitors. By assuming a distance of 3 kpc, we calculate for this HI bubble a linear radius of 22 pc, a swept-up mass of 1600 M_&sun; and an expansion velocity of more than 7 km s-1. High angular resolution IRAS infrared data (HIRES) reveal the presence of a ring with good spatial correlation with the HI shell. Eight IRAS protostellar candidates located around the HI cavity suggest that star formation may be taking place in the shell. Further investigation is required to confirm this proposition.

Affiliated with

Also associated with

No associations

Rating

The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association 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 neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The neutral gas in the environs of the Wolf Rayet stars in the Circinus OB1 association will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1837450