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Astron. Astrophys. 329, 986-990 (1998)


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High resolution spectroscopy of symbiotic stars *

III. Radial velocity curve for CD-43°14304

H.M. Schmid 1, 2, T. Dumm 1, U. Mürset 1, H. Nussbaumer 1, H. Schild 1 and W. Schmutz 1

1 Institut für Astronomie, ETH-Zentrum, CH-8092 Zürich, Switzerland
2 Landessternwarte Heidelberg-Königstuhl, D-69117 Heidelberg, Germany

Received 23 May 1997 / Accepted 17 July 1997

Abstract

We have obtained a series of high resolution optical spectra of the symbiotic system CD [FORMULA]. We derive the radial velocity curve of the cool component and determine an orbital period of about 1448 days and a mass function of [FORMULA] for this binary.

We present line profiles of H [FORMULA] and the Raman scattered line at [FORMULA] 6825 for various orbital phases. The H [FORMULA] line shows very strong variations in flux and spectroscopic structure which are locked to the orbital phase. Much less variability is seen in the Raman scattered line.

Key words: binaries: symbiotic – - binaries: spectroscopic – - stars: fundamental parameters – - stars: individual: CD-43O 14304

* Based on observations obtained at the European Southern Observatory, La Silla, Chile

Send offprint requests to: H.M. Schmid, Heidelberg
(hschmid@lsw.uni-heidelberg.de)

© European Southern Observatory (ESO) 1998

Online publication: December 16, 1997
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