Počet záznamů: 1
Spectroscopic analysis of the B/Be visual binary HR 1847
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SYSNO ASEP 0354857 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Spectroscopic analysis of the B/Be visual binary HR 1847 Tvůrce(i) Kubát, Jiří (ASU-R) RID, ORCID
Saad, S.M. (EG)
Kawka, Adela (ASU-R) ORCID, RID
Nouh, M. I. (EG)
Iliev, L. (BG)
Uytterhoeven, K. (FR)
Korčáková, Daniela (ASU-R)
Hadrava, Petr (ASU-R) RID, ORCID
Škoda, Petr (ASU-R) RID, ORCID
Votruba, Viktor (ASU-R) RID
Dovčiak, Michal (ASU-R) RID, ORCID
Šlechta, Miroslav (ASU-R) RID, ORCIDZdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 520, Sep-Oct (2010), A103/1-A103/17Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova Be stars ; emission-line Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika CEP GA205/08/0003 GA ČR - Grantová agentura ČR CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000283064200086 DOI https://doi.org/10.1051/0004-6361/200913726 Anotace We studied both components of a slightly overlooked visual binary HR 1847 spectroscopically to determine its basic physical and orbital parameters. Basic stellar parameters were determined by comparing synthetic spectra to the observed echelle spectra, which cover both the optical and near-IR regions. New observations of this system used the Ondrejov and Rozhen 2-m telescopes and their coude spectrographs. Radial velocities from individual spectra were measured and then analysed with the code FOTEL to determine orbital parameters. The spectroscopic orbit of HR 1847A is presented for the first time. It is a single-lined spectroscopic binary with a B-type primary, a period of 719.79 days, and a highly eccentric orbit with e = 0.7. We confirmed that HR 1847B is a Be star. Its Ha emission significantly decreased from 2003 to 2008. Both components have a spectral type B7-8 and luminosity class IV-V. Pracoviště Astronomický ústav Kontakt Anežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2011
Počet záznamů: 1