Physical parameters and pulsational mode of short-period small-amplitude Cepheids
نویسندگان
چکیده
منابع مشابه
On the pulsation mode identification of short-period Galactic Cepheids
We present new theoretical Period-Radius (PR) relations for first overtone Galactic Cepheids. Current predictions are based on several sequences of nonlinear, convective pulsation models at solar chemical composition (Y=0.28, Z=0.02) and stellar masses ranging from 3.0 to 5.5 M . The comparison between predicted and empirical radii of four short-period Galactic Cepheids suggests that QZ Nor and...
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We present the Period{Luminosity relation from 290 Cepheids toward the LMC and 597 Cepheids towards the SMC respectively obtained from the monitoring of 1.134.000 and 504.000 stars over 150 nights using the two 4k 8k CCD camera of the Eros2 microlensing project. A slope break of the Period{Luminosity relation has been observed for SMC fundamental mode Cepheids with periods smaller than 2 days. ...
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The pulsational properties of the Cepheid models along the evolutionary tracks from the Padova group (Girardi et al.), as calculated with our turbulent convective pulsation code, are in good agreement with the resonance constraints imposed by the observational OGLE-2 data of the Small and Large Magellanic Clouds. Our study suggests that the P4/P1 = 1/2 resonance for the overtone Cepheids occurs...
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The pulsational properties of the Cepheid models along the evolutionary tracks from the Padova group (Girardi et al.), as calculated with our turbulent convective pulsation code, are in good agreement with the resonance constraints imposed by the observational OGLE-2 data of the Small and Large Magellanic Clouds. Our study suggests that the P4/P1 = 1/2 resonance for the overtone Cepheids occurs...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1984
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/209.3.481