Spectroscopic frequencies of 4 CVn in 2010 and 2011

Numerous high‐resolution spectra of the δ Scuti star 4 CVn were gathered at McDonald Observatory in Texas, USA. They were prepared for interpretation using standard IRAF routines for a subsequent frequency analysis and mode identification with the software FAMIAS. After the reduction process a clear...

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Bibliographic Details
Published in:	Astronomische Nachrichten Vol. 333; no. 10; pp. 1080 - 1082
Main Authors:	Schmid, V.S., Themessl, N., Breger, M., Aerts, C., Beck, P.G., Castanheira, B.G., Fritz, V., Papics, P.I., Debosscher, J., Falcon, R.E.
Format:	Journal Article
Language:	English
Published:	Berlin WILEY-VCH Verlag 01-12-2012 WILEY‐VCH Verlag Wiley Subscription Services, Inc
Subjects:	delta Scuti stars methods: data analysis stars: individual (4 CVn) stars: oscillations
Online Access:	Get full text
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Summary:	Numerous high‐resolution spectra of the δ Scuti star 4 CVn were gathered at McDonald Observatory in Texas, USA. They were prepared for interpretation using standard IRAF routines for a subsequent frequency analysis and mode identification with the software FAMIAS. After the reduction process a clear trend in the first moment of the line profile (radial velocity) remained, indicating the signature of binary motion. This was corrected for by fitting a Keplerian orbit, followed by a detailed analysis of the data in the reference frame of the primary. The results of the frequency analysis are in good agreement with previous photometric studies. This paper presents thirteen pulsation modes that were detected in the data sets for the years 2010 and/or 2011. Future work involves spectroscopic mode identification and subsequent seismic modeling (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Bibliography:	FWF P17441-N02 ark:/67375/WNG-MXJCQ3QW-5 Data from McDonald Observatory, Texas, USA European Research Council under the European Community's Seventh Framework Programme (FP7/2007 2013)/ERC - No. 227224 (PROSPERITY) ArticleID:ASNA201211795 istex:6931090399A9B16F8FA11E046B39C37E0DB22699 Belgian Science Policy Office (Belspo, C90309: CoRoT Data Exploitation) Research performed in the framework of the master theses of the two lead authors at the University of Vienna.
ISSN:	0004-6337 1521-3994
DOI:	10.1002/asna.201211795