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HD 224940


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WZ Cas - variability on multiple time-scales
We present results on our long-term velocity monitoring of the C-richsemi-regular variable WZ Cas with a Coravel instrument. Our findings arecompared with light changes of the star. We suggest that the two mainperiods, 366 and 186 d, are due to radial pulsation. Furthermore, wefind an interesting variation of the width and depth of thecross-correlation profile over a time-scale of at least 1000 d. Severalpossible explanations for this behaviour are discussed by comparison oftime-scales and expected variability amplitudes. The influence ofmovements of large convective cells on the line profiles seems to be themost likely explanation of some of the observed phenomena.

Photometry of Stars in the Field of WZ Cassiopeiae
Not Available

UBV Photometry of Stars whose Positions are Accurately Known
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..357O&db_key=AST

Spectral and Luminosity Classifications and Measurements of the Strength of Cyanogen Absorption for Late-Type Stars from Objective-Prism Spectra.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJ...134..809Y&db_key=AST

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Observation and Astrometry data

Constellation:Cepheus
Right ascension:00h02m04.59s
Declination:+59°56'24.3"
Apparent magnitude:7.979
Distance:226.757 parsecs
Proper motion RA:115.4
Proper motion Dec:32.4
B-T magnitude:9.199
V-T magnitude:8.08

Catalogs and designations:
Proper Names
HD 1989HD 224940
TYCHO-2 2000TYC 3664-158-1
USNO-A2.0USNO-A2 1425-00053737
HIPHIP 164
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