Počet záznamů: 1

Spectroscopic analysis of the B/Be visual binary HR 1847

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, ORCID}
Zdroj.dok.	Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361 Roč. 520, Sep-Oct (2010), A103/1-A103/17
Poč.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	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	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Rok sběru	2011

Počet záznamů: 1