Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.215..265g&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 215, July 15, 1985, p. 265-273.
Astronomy and Astrophysics
Astronomy
10
B Stars, Continuous Spectra, Infrared Stars, Spectral Energy Distribution, Stellar Spectrophotometry, Variable Stars, Emission Spectra, H Lines, Infrared Photometry, Stellar Envelopes, Stellar Magnitude, Stellar Temperature, Ultraviolet Spectra
Scientific paper
New observations of π Aqr in the optical and infrared (IR) region are presented. The effective temperature of π Aqr is derived by comparing observed and computed fluxes in the optical region. No near-ultraviolet excess was found but a strong near-IR excess beginning at λ5500 Å and extending to longer wavelengths was detected. Two separate IR excess emission peaks of variable strength have been distinguished. By combining the present observations with the previous available data it is shown that π Aqr has a long-term variation of brightness and exhibits variation of type I. It is proposed that the variable dimension and density of the circumstellar (CS) envelope resulting in a variable amount of excess continuous hydrogen emission is responsible for such light variations.
No associations
LandOfFree
Continuum energy distribution and photometric behaviour of Pi AQR 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 Continuum energy distribution and photometric behaviour of Pi AQR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuum energy distribution and photometric behaviour of Pi AQR will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1232605