The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris

Details The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...267..187d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 267, no. 1, p. 187-193.

Astronomy and Astrophysics

Astronomy

28

Main Sequence Stars, Metal Ions, Metallicity, Stellar Envelopes, Infrared Astronomy Satellite, Ultraviolet Astronomy

Scientific paper

Temporal variations of the Fe II, Mg II, and Al III circumstellar lines towards Beta Pictoris have been detected and monitored since 1985. However, the unusual presence of Al III ions is still puzzling, since the UV stellar flux from an A5V star such as Beta Pic is insufficient to produce such an ion. In order to better define the origin of such a phenomenon, new observations have been carried out to detect faint signatures of other highly ionized species in the short UV wavelength range, where the stellar continuum flux is low. These observations reveal variations not only near the C IV doublet lines, but also in C I and Al II lines, two weakly ionized species, not clearly detectable until now. In the framework of an infalling body scenario, highly ionized species would be created in the tail, far from the comet head, by collisions with ambient gas surrounding the star, or a weak stellar wind. Spectral changes have also been detected near a CO molecular band location, which, if confirmed, would provide the first molecular signature around Beta Pictoris.

Affiliated with

Also associated with

No associations

Rating

The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris 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 Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1771528