Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-28T03:34:33.085Z Has data issue: false hasContentIssue false
  • English
  • Français

HD 152246, a new high-mass triple system – preliminary results

Published online by Cambridge University Press:  25 February 2014

A. Nasseri ,
R. Chini ,
P. Harmanec ,
P. Mayer ,
T. Dembsky ,
H. Lehmann  and
H. Sana
A. Nasseri
Affiliation:
Astronomisches Institut, Ruhr-Universität Bochum, Germany,
R. Chini
Affiliation:
Astronomisches Institut, Ruhr-Universität Bochum, Germany, Instituto de Astronomía, Universidad Católica del Norte, Antofagasta, Chile
P. Harmanec
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, Praha, Czech Republic
P. Mayer
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, Praha, Czech Republic
T. Dembsky
Affiliation:
Astronomisches Institut, Ruhr-Universität Bochum, Germany,
H. Lehmann
Affiliation:
Thüringer Landessternwarte Tautenburg, Germany
H. Sana
Affiliation:
Space Telescope Science Institute, Baltimore, USA
Get access

Abstract

Multi-epoch, high-resolution (R ∼ 50 000) optical spectrosco-py of the O-type (O9 III – IV) star HD 152246 suggests that it is a triple system where a close inner pair (Aa–Ab) with a circular orbit and a period of 6 days is in a 53–d eccentric orbit (e = 0.68) with a third component Ac. The mass ratios for the inner and outer system are 0.10 and 0.96, respectively. The strengths of various He lines classify Aa and Ac as late O-type stars while Ab is invisible in our spectra.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 64: Setting a New Standard in the Analysis of Binary Stars , 2013 , pp. 411 - 412
Copyright
© EAS, EDP Sciences, 2014

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Hadrava, P., 2004, Publ. Astron. Inst. Acad. Sci. Czech Rep., 92, 1
Sana, H., Gosset, E., Rauw, G., et al, 2006, A&A, 454, 1047
Walborn, N.R., 1973, AJ, 78, 1067CrossRef