Astron. Astrophys. 333, L67-L69 (1998)

Letter to the Editor

Jets from the galactic supersoft X-ray source RX J0019.8+2156

T. Tomov ^{* 1}, U. Munari ², D. Kolev ¹, L. Tomasella ³ and M. Rejkuba <sup>3

1</sup> National Astronomical Observatory Rozhen, P.O. Box 136, 4700 Smolyan, Bulgaria
² Osservatorio Astronomico di Padova, Sede di Asiago, I-36012 Asiago (VI), Italy
³ Osservatorio Astrofisico dell' Università di Padova, I-36012 Asiago (VI), Italy

Received 6 January 1998 / Accepted 6 February 1998

Abstract

We present evidence from high resolution optical spectra for the presence of bipolar jets in the bright super soft X-ray source RX J0019.8+2156, the second such discovered case after RX J0513.9-6951. The jets seem to appear and disappear over a time scale of several months. No jet precession is observed. From the velocity separation of the emission lines produced by the jets a lower limit of is posed to the orbital inclination. This gives support to the interpretation in terms of eclipses for the periodic features in the RX J0019.8+2156 lightcurve.

Key words: binaries: close stars: mass loss stars: individual: RX J0019.8+2156 X-rays: stars

* Visiting Professor at Padova-Asiago Unit of the CNR-Consiglio Nazionale delle Ricerche of Italy

Send offprint requests to: U.Munari

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Contents

• 1. Introduction
• 2. Observations and results
• 3. Discussion
• 4. Orbital inclination
• Acknowledgements
• References

© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998
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