Spectroscopic analysis of the B/Be visual binary HR 1847

被引：3

作者：

Kubat, J. ^{[1
]}

Saad, S. M. ^{[2
]}

Kawka, A. ^{[1
]}

Nouh, M. I. ^{[2
]}

Iliev, L. ^{[3
]}

Uytterhoeven, K. ^{[4
]}

Korcakova, D. ^{[1
]}

Hadrava, P. ^{[5
]}

Skoda, P. ^{[1
]}

Votruba, V. ^{[1
,6
]}

Dovciak, M. ^{[5
]}

Slechta, M. ^{[1
]}

机构：

[1] Akad Ceske Republ, Astron Ustav, Ondrejov 25165, Czech Republic

[2] Natl Res Inst Astron & Geophys, Cairo 11421, Egypt

[3] Bulgarian Acad Sci, Inst Astron, BU-1784 Sofia, Bulgaria

[4] Univ Paris Diderot, Lab AIM, CEA DSM, CNRS,CEA,IRFU,Ctr Saclay, F-91191 Gif Sur Yvette, France

[5] Akad Ceske Republ, Astron Ustav, Prague 14131 4, Czech Republic

[6] Ustav Teoretick Fyzi Astrofyz PrF MU, Brno 61137, Czech Republic

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 520卷

关键词：

binaries: general; stars:; emission-line; Be; stars: individual: HR 1847; ALL-SKY SURVEY; MAIN-SEQUENCE STARS; OB-TYPE STARS; SPECTRAL CLASSIFICATION; ROTATIONAL VELOCITIES; RADIAL-VELOCITIES; VEGA-TYPE; PHOTOMETRY; COMPONENTS; CATALOG;

D O I：

10.1051/0004-6361/200913726

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：17

共 50 条

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