2006ApJ...650.1119H


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.15CEST14:24:55

2006ApJ...650.1119H - Astrophys. J., 650, 1119-1132 (2006/October-3)

X-ray spectroscopy of the contact binary VW Cephei.

HUENEMOERDER D.P., TESTA P. and BUZASI D.L.

Abstract (from CDS):

Short-period binaries represent extreme cases in the generation of stellar coronae via a rotational dynamo. Such stars are important for probing the origin and nature of coronae in the regimes of rapid rotation and activity saturation. VW Cep (P=0.28 days) is a relatively bright, partially eclipsing, very active object. Light curves made from Chandra HETGS data show flaring and rotational modulation but no eclipses. Velocity modulation of emission lines indicates that one component dominates the X-ray emission. The emission measure is highly structured, having three peaks. Helium-like triplet lines give electron densities of about (3-18)x1010/cm3. We conclude that the corona is predominantly on the polar regions of the primary star and is compact.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Eclipsing - Stars: Coronae - stars: individual (VW Cep) - X-Rays: Stars

Simbad objects: 5

goto Full paper

goto View the reference in ADS

Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1033 0
2 * i Boo EB* 15 03 47.29565 +47 39 14.6228           G0Vn 526 0
3 V* VW Cep EB* 20 37 21.6248469581 +75 36 01.889162699   8.13   7.0   G8V+K0V 528 0
4 V* AR Lac RS* 22 08 40.8180372773 +45 44 32.104045703 7.09 6.83 6.11     K0IVe+G5IV 701 0
5 HD 224085 RS* 23 55 04.0516465022 +28 38 01.248194500 8.88 8.20   6.9   K2+IVeFe-1 692 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2006ApJ...650.1119H and select 'bookmark this link' or equivalent in the popup menu


2021.05.15-14:24:55

© Université de Strasbourg/CNRS

    • Contact