A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989

Details A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989 A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991acasn..32..415g&link_type=abstract

Acta Astronomica Sinica (ISSN 0001-5245), vol. 32, no. 4, p. 415-420.

Astronomy and Astrophysics

Astronomy

1

B Stars, Infrared Astronomy, Stellar Spectrophotometry, Variable Stars, Astronomical Observatories, Color-Color Diagram, Emission Spectra, Far Infrared Radiation, H Beta Line, Stellar Envelopes

Scientific paper

The spectroscopic and photometric data of 48 Per in the visible and near infrared regions were obtained on December 7, 8, and 11, 1989. The observations were made with the 60-cm, 90-cm, and 126-cm telescopes at Xinglong Station of the Beijing Astronomical Observatory. The results obtained show that there were rapid variations in the strength of H-beta emission line with time scale of about 30 min and changeable trend of infrared magnitude at around UT 16.1 h to 16.5 h on December 7, 1989. In terms of the far-IR color-color diagram of Be stars obtained at 12, 25, and 60 microns (Cote et al., 1986) and the theoretical model (Arati et al., 1978) in infrared band, we conclude that the envelope around 48 Per is unstable. Finally, compared with Goraya's (1985) spectral scans of 48 Per, we found that the intensities of H-beta emission had increased. So we draw the conclusion that the present state appears to be the continuation of the previous active variability.

Affiliated with

Also associated with

No associations

Rating

A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989 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 A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1536419