Separating the X-Ray Emissions of UV Ceti A and B with Chandra
Astrophysics
2009-11-07 v1
Abstract
We present the first spatially separated X-ray observation of the active UV Ceti binary with \textit{Chandra}, providing important new information on the relative X-ray activity levels of its nearly identical dM5.5e components. The two components had similar X-ray luminosities during low-level periods and emission measure loci derived from Low Energy Transmission Grating spectra reveal similar coronal temperatures ( MK). However, the B component showed a higher degree of variability, resulting in a higher average X-ray luminosity than that of UV Cet A. We discuss possible causes of this enhanced activity in UV Ceti B.
Cite
@article{arxiv.astro-ph/0303492,
title = {Separating the X-Ray Emissions of UV Ceti A and B with Chandra},
author = {Marc Audard and Manuel Guedel and Stephen L. Skinner},
journal= {arXiv preprint arXiv:astro-ph/0303492},
year = {2009}
}
Comments
To appear in the Astrophysical Journal, Vol. 589 (2003 June 1)