SIMBAD references

2010ApJ...710L..30A - Astrophys. J., 710, L30-L34 (2010/February-2)

On the multiplicity of the zero-age main-sequence O star Herschel 36.

ARIAS J.I., BARBA R.H., GAMEN R.C., MORRELL N.I., MAIZ-APELLANIZ J., ALFARO E.J., SOTA A., WALBORN N.R. and MONI BIDIN C.

Abstract (from CDS):

We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum. Based on our radial-velocity (RV) study, we propose a picture of a close massive binary and a more distant companion, most probably in wide orbit about each other. The orbital solution for the binary, whose components we identify as O9 V and B0.5 V, is characterized by a period of 1.5415 ± 0.0006 days. With a spectral type O7.5 V, the third body is the most luminous component of the system and also presents RV variations with a period close to 498 days. Some possible hypotheses to explain the variability are briefly addressed and further observations are suggested.

Abstract Copyright:

Journal keyword(s): binaries: close - stars: early-type - stars: individual: Herschel 36

VizieR on-line data: <Available at CDS (J/ApJ/710/L30): table1.dat>

Simbad objects: 8

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2022.10.05-05:04:09

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