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

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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 3

1 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 [FORMULA] 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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© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998
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