GCIRS 16SW: A massive eclipsing binary in the Galactic center

Martins, F.; Trippe, S.; Paumard, T.; Ott, T.; Genzel, R.; Rauw, Grégor; Eisenhauer, F.; Gillessen, S.; Maness, H.; Abuter, R.

doi:10.1086/508328

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GCIRS 16SW: A massive eclipsing binary in the Galactic center

Martins, F.; Trippe, S.; Paumard, T. et al.

2006 • In Astrophysical Journal, 649 (2, Part 2), p. 103-L106

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https://hdl.handle.net/2268/15718

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10.1086/508328

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Keywords :

binaries : eclipsing; Galaxy : center; stars : early-type

Abstract :

[en] We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K band. Radial velocities are derived from the He I 2.112 mu m line complex and vary regularly with a period of 19.45 days, indicating that the star is most likely an eclipsing binary. Under various assumptions, we are able to derive a mass of similar to 50 M circle dot for each component.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Martins, F.

Trippe, S.

Paumard, T.

Ott, T.

Genzel, R.

Rauw, Grégor ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)

Eisenhauer, F.

Gillessen, S.

Maness, H.

Abuter, R.

Language :

English

Title :

GCIRS 16SW: A massive eclipsing binary in the Galactic center

Publication date :

01 October 2006

Journal title :

Astrophysical Journal

ISSN :

0004-637X

eISSN :

1538-4357

Publisher :

Univ Chicago Press, Chicago, United States - Illinois

Volume :

649

Issue :

2, Part 2

Pages :

L103-L106

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 30 June 2009

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