Spectral variability of IL cephei
The results of six years of spectroscopic studies of the Herbig Be star IL Cep (HD216629) are reported. Various spectral parameters of the H α and H β emission lines and those of the He I λ 5876 Å absorption feature are found for the first time to have exhibited slow variations in 2006–2011 and to h...
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| Veröffentlicht in: | Astrophysical bulletin 2013-04, Vol.68 (2), p.196-207 |
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| container_title | Astrophysical bulletin |
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| creator | Ismailov, N. Z. Bakhaddinova, G. G. Khalilov, O. B. Mikailov, Kh. M. |
| description | The results of six years of spectroscopic studies of the Herbig Be star IL Cep (HD216629) are reported. Various spectral parameters of the H
α
and H
β
emission lines and those of the He I
λ
5876 Å absorption feature are found for the first time to have exhibited slow variations in 2006–2011 and to have reached their extrema in 2009–2010. The Na I D1 and D2 lines reproduce, in a weaker form, the H
α
radialvelocity variations. It is suggested that the variations found in the spectrum of the star may be due to the presence of additional bodies in the system. |
| doi_str_mv | 10.1134/S1990341313020077 |
| format | Article |
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α
and H
β
emission lines and those of the He I
λ
5876 Å absorption feature are found for the first time to have exhibited slow variations in 2006–2011 and to have reached their extrema in 2009–2010. The Na I D1 and D2 lines reproduce, in a weaker form, the H
α
radialvelocity variations. It is suggested that the variations found in the spectrum of the star may be due to the presence of additional bodies in the system.</description><identifier>ISSN: 1990-3413</identifier><identifier>EISSN: 1990-3421</identifier><identifier>DOI: 10.1134/S1990341313020077</identifier><language>eng</language><publisher>Dordrecht: SP MAIK Nauka/Interperiodica</publisher><subject>Astronomy ; Astrophysics ; Astrophysics and Cosmology ; Emission spectroscopy ; Physics ; Physics and Astronomy ; Spectra ; Spectral emissivity ; Spectral lines ; Spectroscopic analysis ; Spectroscopy ; Spectrum analysis ; Star & galaxy formation ; Stars ; Stars & galaxies</subject><ispartof>Astrophysical bulletin, 2013-04, Vol.68 (2), p.196-207</ispartof><rights>Pleiades Publishing, Ltd. 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c382t-c5ed80bec250e8b74d53c286d7f2ff4d8dbbebb78d48ff6cfcf4f76eeb2c8e003</citedby><cites>FETCH-LOGICAL-c382t-c5ed80bec250e8b74d53c286d7f2ff4d8dbbebb78d48ff6cfcf4f76eeb2c8e003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1990341313020077$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1990341313020077$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Ismailov, N. Z.</creatorcontrib><creatorcontrib>Bakhaddinova, G. G.</creatorcontrib><creatorcontrib>Khalilov, O. B.</creatorcontrib><creatorcontrib>Mikailov, Kh. M.</creatorcontrib><title>Spectral variability of IL cephei</title><title>Astrophysical bulletin</title><addtitle>Astrophys. Bull</addtitle><description>The results of six years of spectroscopic studies of the Herbig Be star IL Cep (HD216629) are reported. Various spectral parameters of the H
α
and H
β
emission lines and those of the He I
λ
5876 Å absorption feature are found for the first time to have exhibited slow variations in 2006–2011 and to have reached their extrema in 2009–2010. The Na I D1 and D2 lines reproduce, in a weaker form, the H
α
radialvelocity variations. It is suggested that the variations found in the spectrum of the star may be due to the presence of additional bodies in the system.</description><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Astrophysics and Cosmology</subject><subject>Emission spectroscopy</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Spectra</subject><subject>Spectral emissivity</subject><subject>Spectral lines</subject><subject>Spectroscopic analysis</subject><subject>Spectroscopy</subject><subject>Spectrum analysis</subject><subject>Star & galaxy formation</subject><subject>Stars</subject><subject>Stars & galaxies</subject><issn>1990-3413</issn><issn>1990-3421</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLw0AQhRdRsFZ_gLeIFy_RnZ3N7uYoxWqh4KF6DtnNrKakTdxNhf57UyoiiniZGYbvPXiPsXPg1wAobxaQ5xwlICAXnGt9wEa7V4pSwOHXDXjMTmJccq4Acxyxi0VHrg9lk7yXoS5t3dT9Nml9MpsnjrpXqk_ZkS-bSGefe8yep3dPk4d0_ng_m9zOU4dG9KnLqDLckhMZJ2O1rDJ0wqhKe-G9rExlLVmrTSWN98p556XXisgKZ4hzHLOrvW8X2rcNxb5Y1dFR05RrajexAKVBKlAK_0dRaZnv5oBe_kCX7SashyADlaEcahH5QMGecqGNMZAvulCvyrAtgBe7fotf_Q4asdfEgV2_UPjm_KfoA5Eheng</recordid><startdate>20130401</startdate><enddate>20130401</enddate><creator>Ismailov, N. Z.</creator><creator>Bakhaddinova, G. G.</creator><creator>Khalilov, O. B.</creator><creator>Mikailov, Kh. M.</creator><general>SP MAIK Nauka/Interperiodica</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20130401</creationdate><title>Spectral variability of IL cephei</title><author>Ismailov, N. Z. ; Bakhaddinova, G. G. ; Khalilov, O. B. ; Mikailov, Kh. M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c382t-c5ed80bec250e8b74d53c286d7f2ff4d8dbbebb78d48ff6cfcf4f76eeb2c8e003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Astrophysics and Cosmology</topic><topic>Emission spectroscopy</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Spectra</topic><topic>Spectral emissivity</topic><topic>Spectral lines</topic><topic>Spectroscopic analysis</topic><topic>Spectroscopy</topic><topic>Spectrum analysis</topic><topic>Star & galaxy formation</topic><topic>Stars</topic><topic>Stars & galaxies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ismailov, N. Z.</creatorcontrib><creatorcontrib>Bakhaddinova, G. G.</creatorcontrib><creatorcontrib>Khalilov, O. B.</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>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Astrophysical bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ismailov, N. Z.</au><au>Bakhaddinova, G. G.</au><au>Khalilov, O. B.</au><au>Mikailov, Kh. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spectral variability of IL cephei</atitle><jtitle>Astrophysical bulletin</jtitle><stitle>Astrophys. Bull</stitle><date>2013-04-01</date><risdate>2013</risdate><volume>68</volume><issue>2</issue><spage>196</spage><epage>207</epage><pages>196-207</pages><issn>1990-3413</issn><eissn>1990-3421</eissn><abstract>The results of six years of spectroscopic studies of the Herbig Be star IL Cep (HD216629) are reported. Various spectral parameters of the H
α
and H
β
emission lines and those of the He I
λ
5876 Å absorption feature are found for the first time to have exhibited slow variations in 2006–2011 and to have reached their extrema in 2009–2010. The Na I D1 and D2 lines reproduce, in a weaker form, the H
α
radialvelocity variations. It is suggested that the variations found in the spectrum of the star may be due to the presence of additional bodies in the system.</abstract><cop>Dordrecht</cop><pub>SP MAIK Nauka/Interperiodica</pub><doi>10.1134/S1990341313020077</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1990-3413 |
| ispartof | Astrophysical bulletin, 2013-04, Vol.68 (2), p.196-207 |
| issn | 1990-3413 1990-3421 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1671461663 |
| source | SpringerLink Journals - AutoHoldings |
| subjects | Astronomy Astrophysics Astrophysics and Cosmology Emission spectroscopy Physics Physics and Astronomy Spectra Spectral emissivity Spectral lines Spectroscopic analysis Spectroscopy Spectrum analysis Star & galaxy formation Stars Stars & galaxies |
| title | Spectral variability of IL cephei |
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