2010A&A...517A..24K


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.09CEST07:37:43

2010A&A...517A..24K - Astronomy and Astrophysics, volume 517, A24-24 (2010/7-1)

Properties and nature of Be stars. 28. Implications of systematic observations for the nature of the multiple system with the Be star ο Cassiopeae and its circumstellar environment.

KOUBSKY P., HUMMEL C.A., HARMANEC P., TYCNER C., VAN LEEUWEN F., YANG S., SLECHTA M., BOZIC H., ZAVALA R.T., RUZDJAK D. and SUDAR D.

Abstract (from CDS):

The analysis of radial velocities of the Be star ο Cas from spectra taken between 1992 and 2008 at the Ondrejov Observatory and the Dominion Astrophysical Observatory allowed us to reconfirm the binary nature of this object, first suggested by Abt and Levy in 1978, but later refuted by several authors. The orbital parameters of this SB1 system imply a very high mass function of about one solar mass. This in turn leads to a very high mass of the secondary, possibly higher than that of the primary. In order to look for such a massive secondary, o Cas was observed with the Navy Prototype Optical Interferometer, which allowed the binary components to be spatially resolved for the first time. The interferometric observations lead to the detection of a secondary, about 3 mag fainter than the primary. The possible properties of this peculiar binary system and the reasons why the massive secondary does not dominate the optical spectrum are discussed.

Abstract Copyright:

Journal keyword(s): binaries: close - binaries: spectroscopic - stars: emission-line, Be - stars: fundamental parameters - stars: individual: ο Cas

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * zet Cas Pu* 00 36 58.2841866 +53 53 48.867311 2.58 3.47 3.66 3.74 3.95 B2IV 421 0
2 * 68 Cas * 00 44 26.1908781086 +47 51 50.333752788   5.520 5.648     B5V 100 0
3 * omi Cas Be* 00 44 43.5186650 +48 17 03.713573 3.91 4.44 4.50 4.45 4.50 B5IIIe 267 0
4 * gam Cas Be* 00 56 42.5317 +60 43 00.265 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1137 2
5 * mu. And PM* 00 56 45.2121113 +38 29 57.638044 4.14 3.99 3.87 3.72 3.64 A6V 205 0
6 HD 6114 ** 01 03 01.54709 +47 22 34.1724   8.43 8.31 7.59   A9IV 71 0
7 * bet Aur Al* 05 59 31.7229284 +44 56 50.757259 1.97 1.93 1.90 1.82 1.83 A1IV-Vp 401 0
8 * kap And PM* 23 40 24.5076320 +44 20 02.156595 3.80 4.06 4.14 4.15 4.22 A0V 177 0

    Equat.    Gal    SGal    Ecl

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2020.07.09-07:37:43

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