S Persei: Optical and water maser variability - 1984 to 1990

Details S Persei: Optical and water maser variability - 1984 to 1990 S Persei: Optical and water maser variability - 1984 to 1990

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...249..465l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 249, no. 2, Sept. 1991, p. 465-473. Research supported by Research Corp.

Astronomy and Astrophysics

Astrophysics

6

Infrared Spectra, Interstellar Masers, Maser Outputs, Supergiant Stars, Water Masers, M Stars, Near Infrared Radiation, Stellar Envelopes

Scientific paper

The M supergiant S Persei was monitored since 1984 optically and since 1987 for water maser emission at 22 GHz. The dozen H2O maser features show complex variations in intensity with many of the features varying independently of one another. Some of the water maser features brightened dramatically at the time of the bright optical maximum observed in 1988 August and again 10 weeks later. It is possible the increase in water maser intensity is related to the ejection of a dust shell near the time of the preceding optical minimum. The intensity variations of the maser spectrum as being produced by an asymmetric distribution of maser spots are interpreted. A double shell of maser spots may be present on the near side of the shell, but appears to be lacking or be occulted on the far side. No chromospheric activity was detected about 10 weeks after optical maximum. A well developed shock is seen in a near-infrared spectrum obtained in 1988 October.

Affiliated with

Also associated with

No associations

Rating

S Persei: Optical and water maser variability - 1984 to 1990 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 S Persei: Optical and water maser variability - 1984 to 1990, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and S Persei: Optical and water maser variability - 1984 to 1990 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1332750