On the nature of the cool component of MWC 560

Gromadzki, M; Mikołajewska, J; Whitelock, P A; Marang, F

On the nature of the cool component of MWC 560

Journal Article

2007

Journal Title

Astronomy and Astrophysics

Link to Journal

https://dx.doi.org/10.1051/0004-6361:20066538

Department

Department of Astronomy

Faculty

Faculty of Science

Abstract

Context.MWC 560 (V694 Mon) is one of the most enigmatic symbiotic system with a very active accretion-powered hot component. Such activity can be supported only by a luminous asymptotic giant branch star, i.e. a Mira or SR variable, with a high mass-loss rate. It is also a very unusual jet source because the jet axis lies practically parallel to the line of sight. Aims. The aims of our study are the determination of the evolutionary status of the cool component of MWC 560. Methods. Our methods involve analysis of near-IR JHKL and optical light curves. Results. The cool component of MWC 560 pulsates with a period of ∼340 days, and it is probably a red SR variable on the thermally pulsing AGB. The high mass-loss rate expected for such a star is sufficient to power the observed activity of the hot companion.

Reference:

Collections

Journal Articles

Full item page