Photometric variability and evolutionary status of the supergiant with an infrared excess HD 179821=V1427 aquilae

We present new results of our UBV photometry for HD 179821=V1427 Aql, an F supergiant with an infrared excess, from 2000 to 2008. The semiregular low-amplitude (Δ V = 0 . m 05−0 . m 20) photometric variability of the star with a cycle period from 130 to 200 days is caused by pulsations, along with t...

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Veröffentlicht in:	Astronomy letters 2009-11, Vol.35 (11), p.764-779
Hauptverfasser:	Arkhipova, V. P., Esipov, V. F., Ikonnikova, N. P., Komissarova, G. V., Tatarnikov, A. M., Yudin, B. F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics and Astroparticles Infrared imaging systems Observations and Techniques Photometry Physics Physics and Astronomy Spectrum analysis Star & galaxy formation Stars & galaxies
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