Spectroscopic observations of the classical symbiotic star V1413 AQL at the phase of its transition to quiescence
We present the results of our spectroscopic and photometric observations of the classical symbiotic star V1413 Aql in 2003–2007, which cover the transition phase of its hot component from activity to quiescence. Various quiescence criteria for the hot component of the system are analyzed. Judging by...
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| Veröffentlicht in: | Astronomy letters 2009-03, Vol.35 (3), p.182-194 |
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| container_title | Astronomy letters |
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| creator | Tatarnikova, A. A. Tatarnikov, A. M. Esipov, V. F. Kolotilov, E. A. |
| description | We present the results of our spectroscopic and photometric observations of the classical symbiotic star V1413 Aql in 2003–2007, which cover the transition phase of its hot component from activity to quiescence. Various quiescence criteria for the hot component of the system are analyzed. Judging by its photometric characteristics, the system had not yet returned to quiescence by 2007, although a fairly strong He II λ4686 Å line observed previously during quiescence in 1993 appeared in its spectrum. We model the continuum energy distribution for V1413 Aql based on a standard three-component model and a model with an accretion disk. Analysis of the forbidden [O III] and [Ne III] lines shows that the neon abundance in V1413 Aql may be enhanced with respect to the oxygen abundance. The cool component of V1413 Aql has been found to be a variable M5-type red giant, with the variability amplitude at λ = 7500 Å being at least 2
m
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| doi_str_mv | 10.1134/S1063773709030050 |
| format | Article |
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m
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A.</au><au>Tatarnikov, A. M.</au><au>Esipov, V. F.</au><au>Kolotilov, E. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spectroscopic observations of the classical symbiotic star V1413 AQL at the phase of its transition to quiescence</atitle><jtitle>Astronomy letters</jtitle><stitle>Astron. Lett</stitle><date>2009-03-01</date><risdate>2009</risdate><volume>35</volume><issue>3</issue><spage>182</spage><epage>194</epage><pages>182-194</pages><issn>1063-7737</issn><eissn>1562-6873</eissn><coden>ALETEO</coden><abstract>We present the results of our spectroscopic and photometric observations of the classical symbiotic star V1413 Aql in 2003–2007, which cover the transition phase of its hot component from activity to quiescence. Various quiescence criteria for the hot component of the system are analyzed. Judging by its photometric characteristics, the system had not yet returned to quiescence by 2007, although a fairly strong He II λ4686 Å line observed previously during quiescence in 1993 appeared in its spectrum. We model the continuum energy distribution for V1413 Aql based on a standard three-component model and a model with an accretion disk. Analysis of the forbidden [O III] and [Ne III] lines shows that the neon abundance in V1413 Aql may be enhanced with respect to the oxygen abundance. The cool component of V1413 Aql has been found to be a variable M5-type red giant, with the variability amplitude at λ = 7500 Å being at least 2
m
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| subjects | Accretion Astronomy Astrophysics Astrophysics and Astroparticles Double stars Evolution Neon Observations and Techniques Physics Physics and Astronomy Spectrum analysis Stars & galaxies |
| title | Spectroscopic observations of the classical symbiotic star V1413 AQL at the phase of its transition to quiescence |
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