Statistics – Computation
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..236b&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, March 1985, p. 236-246.
Statistics
Computation
8
Iue, Metallic Stars, Radiant Flux Density, Stellar Spectra, Ubv Spectra, Ultraviolet Spectroscopy, Variable Stars, Astrometry, Doppler Effect, Gravitational Effects, Light Curve, Magnesium, Stellar Magnitude, Stellar Temperature, Ultraviolet Absorption
Scientific paper
UV spectroscopic observations of RR Lyr and X Ari obtained at high and low dispersion using the LWR and SWP cameras of IUE on Jan. 25-28, 1980, are reported. The data are presented in tables and graphs and compared with the results of synthetic-spectrum calculations based on the VR photometric data of Manduca et al. (1981). Good agreement is obtained for X Ari, but the observed fluxes for RR Lyr are significantly lower than the computed fluxes and (by 0.4 mag at 220 and 240 nm during minimum) than those observed by ANS (Bonnell et al., 1982). This discrepancy is attributed to secondary-cycle (Blazhko) effects and to the fact that line blocking is not taken into account in the synthetic-spectrum computations. The RR Lyr spectrum at the Mg II h and k lines is characterized by no detectable emission and strong interstellar absorption.
Bell Roger A.
Bonnell Jerry T.
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