Spectral and photoelectric observations of V 407 Cygni and AS 338
Creators
Description
The results are given of photometric (in the UBVRJHKLMN system) and spectral (range 4,300-7,200 angstrom) observations of the object V 407 Cyg, which is included in the catalog of symbiotic stars, and the symbiotic star AS 338. It is shown that during the time of their observations the radiation of V 407 Cyg, a variable red giant surrounded by a dust envelope, did not reveal definite signs of the presence of a hot source of radiation that would permit classification of the object as a symbiotic star. In the spectrum of V 407 Cyg the lines Hα and Hβ were not observed, whereas the lines (N II) 6548 and 6584 were. During 1986-1987 the brightness of AS 338 in the visible wavelength range continued to decrease. Nevertheless, the spectrum of the star still did not acquire a symbiotic nature, so that for more than four years AS 338 has been in a state in which its hot component can be classified as a star of the spectral class B with envelope
Additional details
Publishing Information
- Journal Title
- Astrophysics (English Translation)
- Journal Volume
- 29
- Journal Issue
- 2
- Series
- Astrophysics (Engl. Transl.).
- Journal Page Range
- 582-587
- ISSN
- 0004-6396
- CODEN
- ATPYA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22032920
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Translation
- Descriptors DEI
- BACKGROUND RADIATION; BRIGHTNESS; COSMIC DUST; COSMIC GASES; EMISSION SPECTRA; ENERGY SPECTRA; HYDROGEN IONS; INFRARED SPECTRA; IONIZED GASES; LINE WIDTHS; NEBULAE; NITROGEN IONS; ORGANIZING; PHOTOMETRY; RED GIANT STARS; STAR EVOLUTION; STELLAR ATMOSPHERES; SUPERGIANT STARS; SYMBIOTIC STARS; VARIABLE STARS; VARIATIONS
- Descriptors DEC
- ATMOSPHERES; CHARGED PARTICLES; DUSTS; FLUIDS; GASES; GIANT STARS; IONS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SPECTRA; STARS
Optional Information
- Notes
- (English). Cover-to-cover Translation of Astrofizika (U.S.S.R). Cover-to-cover translation of Astrofizika (USSR).