Spectral observations of AG Dra in 1983
The results (from 40 spectrograms obtained in 1983) of spectral observations with reciprocal dispersions 86 A/mm and also 94 A/mm at H-gamma are given. It is noted that the equivalent widths of the emission lines of hydrogen and He II are variable. The Balmer decrement is found with allowance for th...
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| Veröffentlicht in: | Astrophysics 1987-05, Vol.25 (3), p.612-615 |
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| container_end_page | 615 |
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| container_title | Astrophysics |
| container_volume | 25 |
| creator | Ismailov, Z. A. Mikailov, Kh. M. |
| description | The results (from 40 spectrograms obtained in 1983) of spectral observations with reciprocal dispersions 86 A/mm and also 94 A/mm at H-gamma are given. It is noted that the equivalent widths of the emission lines of hydrogen and He II are variable. The Balmer decrement is found with allowance for the energy distribution in the AG Dra spectrum as constructed from literature data, interstellar absorption being taken into account as well. It is concluded that in the framework of the symbiotic model AG Dra is a pair consisting of a K3 III star and a hot component with dense and compact envelope. (Author) |
| doi_str_mv | 10.1007/BF01011222 |
| format | Article |
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A.</creatorcontrib><creatorcontrib>Mikailov, Kh. M.</creatorcontrib><title>Spectral observations of AG Dra in 1983</title><title>Astrophysics</title><description>The results (from 40 spectrograms obtained in 1983) of spectral observations with reciprocal dispersions 86 A/mm and also 94 A/mm at H-gamma are given. It is noted that the equivalent widths of the emission lines of hydrogen and He II are variable. The Balmer decrement is found with allowance for the energy distribution in the AG Dra spectrum as constructed from literature data, interstellar absorption being taken into account as well. It is concluded that in the framework of the symbiotic model AG Dra is a pair consisting of a K3 III star and a hot component with dense and compact envelope. 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A.</creatorcontrib><creatorcontrib>Mikailov, Kh. M.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Astrophysics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ismailov, Z. A.</au><au>Mikailov, Kh. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spectral observations of AG Dra in 1983</atitle><jtitle>Astrophysics</jtitle><date>1987-05-01</date><risdate>1987</risdate><volume>25</volume><issue>3</issue><spage>612</spage><epage>615</epage><pages>612-615</pages><issn>0571-7132</issn><issn>0571-7256</issn><eissn>1573-8191</eissn><abstract>The results (from 40 spectrograms obtained in 1983) of spectral observations with reciprocal dispersions 86 A/mm and also 94 A/mm at H-gamma are given. It is noted that the equivalent widths of the emission lines of hydrogen and He II are variable. The Balmer decrement is found with allowance for the energy distribution in the AG Dra spectrum as constructed from literature data, interstellar absorption being taken into account as well. It is concluded that in the framework of the symbiotic model AG Dra is a pair consisting of a K3 III star and a hot component with dense and compact envelope. 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| fulltext | fulltext |
| identifier | ISSN: 0571-7132 |
| ispartof | Astrophysics, 1987-05, Vol.25 (3), p.612-615 |
| issn | 0571-7132 0571-7256 1573-8191 |
| language | eng |
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| source | SpringerLink Journals; EZB Electronic Journals Library |
| subjects | 640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ATMOSPHERES BALMER LINES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ELECTRON DENSITY ELECTRON TEMPERATURE ELEMENTS EMISSION SPECTRA ENERGY SPECTRA EVEN-EVEN NUCLEI FLUIDS HELIUM 4 HELIUM II HELIUM ISOTOPES HYDROGEN ISOTOPES LIGHT NUCLEI LINE WIDTHS LUMINOSITY MATHEMATICAL MODELS NONMETALS NUCLEI OPTICAL PROPERTIES PHYSICAL PROPERTIES QUANTUM FLUIDS SPECTRA SPECTROPHOTOMETRY STABLE ISOTOPES STAR MODELS STARS STELLAR ATMOSPHERES STELLAR RADIATION SYMBIOTIC STARS |
| title | Spectral observations of AG Dra in 1983 |
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