Optical spectroscopy of V1123 Tauri and its visual companion

Bibcode
2009NewA...14..149G
DOI
10.1016/j.newast.2008.06.004
Gutiérrez, Carlos M.
Bibliographical reference

New Astronomy, Volume 14, Issue 2, p. 149-151.

Advertised on:
2
2009
Journal
New Astronomy
Number of authors
1
IAC number of authors
1
Citations
2
Refereed citations
2
Description
We present long-slit intermediate resolution spectroscopy of the visual binary V1123. We confirm that component A is a W UMa eclipsing star with spectral type G0V, while component B is a K0V. We infer a distance to the system of 125 pc, and then a projected separation between both components of 520 AU. The difference in radial velocities of components A and B is ⩽20 km s-1. At the distance od the system, the flux measured by ROSAT for the component A, corresponds to an X-ray luminosity of Lx=30.23ergs which is within typical values for W UMa systems.
Related projects
Full-sky map showing the spatial distribution of the primary anisotropies of the Cosmic Microwave Background (generated 380,000 years after the Big Bang) derived from observations of the Planck satellite
Anisotropy of the Cosmic Microwave Background
The general goal of this project is to determine and characterize the spatial and spectral variations in the temperature and polarisation of the Cosmic Microwave Background in angular scales from several arcminutes to several degrees. The primordial matter density fluctuations which originated the structure in the matter distribution of the present
Rafael
Rebolo López
In progress
Type
Refereed
Cosmology & Astroparticles (CYA, CTA)

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