Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...363..245m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 363, Nov. 1, 1990, p. 245-254.
Astronomy and Astrophysics
Astronomy
28
Infrared Astronomy, Planetary Nebulae, Stellar Evolution, Supergiant Stars, Ultraviolet Astronomy, Color-Color Diagram, Iue, Stellar Envelopes, Stellar Luminosity, Stellar Spectra, Variable Stars
Scientific paper
Ultraviolet IUE spectra and infrared JHKL photometry of FG Sge obtained over the period 1982-1989 indicate that the cooling rate of the star observed until about 1980 seems to have stopped and that an increase of the effective temperature may have occurred, this being a significant change in the evolutionary path traced so far. The current spectral type of FG Sge is F6-7 I, as deduced from UV data. There is evidence of the existence of an envelope responsible for the infrared excesses observed at longer wavelengths. The short-term variation period is about 100-110 + or - 15 days, and it has remained stable since 1979, apart from small fluctuations of + or - 15 days.
Cassatella Angelo
Eiroa Carlos
Fernandez-Castro Telmo
González-Riestra Rosario
Jimenez-Fuensalida Jesus
No associations
LandOfFree
Ultraviolet and infrared monitoring of FG Sagittae during 1982-1989 - Evolutionary status 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 Ultraviolet and infrared monitoring of FG Sagittae during 1982-1989 - Evolutionary status, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet and infrared monitoring of FG Sagittae during 1982-1989 - Evolutionary status will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-839582