Astronomy and Astrophysics – Astronomy
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...109..274e&link_type=abstract
Astronomy and Astrophysics, vol. 109, no. 2, May 1982, p. 274-278. Research supported by the Consiglio Nazionale delle Ricerche
Astronomy and Astrophysics
Astronomy
2
Cepheid Variables, Infrared Spectra, Stellar Spectra, Stellar Spectrophotometry, Ultraviolet Spectra, Visual Photometry, Binary Stars, Chromosphere, Emission Spectra, Infrared Astronomy, Iue, Line Spectra, Radial Velocity, Spectrum Analysis, Ultraviolet Astronomy
Scientific paper
Ultraviolet IUE spectra, optical 12 A/mm red and blue spectra, optical BV photometry and infrared JHKL photometry of the 7.5-d classical Cepheid R Muscae equals HD 110 311 are presented and discussed together with some earlier photometric and radial velocity data. Using the CORS method, a newly derived radius is given, as well as new values for effective temperature and log g. The UV spectra confirmed the predicted trend to increasing amplitudes with decreasing wavelength and indicate that R Mus has a shallow chromosphere, while no transition region lines could be detected. From all the data from 1200 A to 5 microns it is concluded that R Mus does not have a companion detectable with the sensitivity given, contrary to earlier results.
Caccin Bruno
Eichendorf W.
Heck Andre
Russo Gennaro
Sollazzo Cl.
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