Article (Scientific journals)
Optical spectroscopy of X-Mega targets - IV. CPD-59 degrees 2636: a new O-type multiple system in the Carina Nebula
Albacete Colombo, J. F.; Morrell, N. I.; Rauw, Grégor et al.
2002In Monthly Notices of the Royal Astronomical Society, 336 (4), p. 1099-1108
Peer Reviewed verified by ORBi
 

Files


Full Text
2002MNRAS.336.1099A.pdf
Publisher postprint (1.53 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
binaries : general; stars : early-type; stars : fundamental parameters; stars : individual : CPD 59 degrees 2636; open clusters and associations : individual : Trumpler 16; X-rays : stars
Abstract :
[en] High-resolution optical spectroscopy of CPD -59degrees2636, one of the O-type stars in the open cluster Trumpler 16 in the Carina Nebula, reveals this object to be a multiple system displaying triple lines which we label as components A, B and C of spectral types O7 V, O8 V and O9 V, respectively. From our radial velocity measurements we find that the components A and B form a close binary with a period of 3.6284 d, and we obtain the first circular radial velocity orbit for this system with semi-amplitudes of 184 and 192 km s(-1), leading to minimum masses of 10.1 and 9.7 M-.. We find that the component C is a single lined binary with a period of 5.034 d and semi-amplitude of 48 km s(-1). We also analyse the X-ray radiation from CPD -59degrees2636, finding neither appreciable overluminosity nor phase-related X-ray flux variations.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Albacete Colombo, J. F.
Morrell, N. I.
Rauw, Grégor  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Corcoran, M. F.
Niemela, V. S.
Sana, H.
Language :
English
Title :
Optical spectroscopy of X-Mega targets - IV. CPD-59 degrees 2636: a new O-type multiple system in the Carina Nebula
Publication date :
11 November 2002
Journal title :
Monthly Notices of the Royal Astronomical Society
ISSN :
0035-8711
eISSN :
1365-2966
Publisher :
Blackwell Publishing Ltd, Oxford, United Kingdom
Volume :
336
Issue :
4
Pages :
1099-1108
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 June 2009

Statistics


Number of views
39 (1 by ULiège)
Number of downloads
0 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi