On the Theoretical Period-Radius Relation of Classical Cepheids
نویسندگان
چکیده
منابع مشابه
On the Theoretical Period-Radius Relation of Classical Cepheids
We present the results of a comprehensive theoretical investigation on the Period-Radius (PR) relation of classical Cepheids based on new sequences of full amplitude, nonlinear convective models constructed by adopting a wide range of both stellar masses and chemical compositions. In the period range 0.9 ≤ logP ≤ 1.8 a very good agreement is found between theoretical predictions and current ava...
متن کاملOn the Period-Luminosity-Color Relation of Classical Cepheids
We present the comparison between theoretical and empirical PL relations in V and I bands for the Large Magellanic Cloud. We found that, within the current intrinsic dispersions, theoretical predictions are in remarkable agreement with observational data. We also discuss the PLC relations in (V,B-V) and (V,V-I) as well as the dependence of distance determinations on uncertainties in colors, in ...
متن کاملOn the Theoretical Period-Luminosity Relation of Cepheids
The theoretical period-luminosity relation for Cepheids was deduced from stellar evolution and pulsation computations. Questions concerning the metallicity dependence of the relation as well as the constancy of the pulsation ‘constant’ Q in the instablility strip were addressed. We found no significant metallicity dependence of either the slope or of the zero-point of the period-luminosity rela...
متن کاملTheoretical Models for Classical Cepheids : II . Period - Luminosity , Period - Color and Period - Luminosity - Color Relations
We present and discuss theoretical predictions concerning the pulsational properties of Classical Cepheids. Masses and luminosities provided by stellar evolutionary calculations are used as input parameters of nonlinear, nonlocal and time–dependent convective pulsating models and accurate determinations of both the blue and red edge of the instability strip are derived, together with theoretica...
متن کاملNew Period-Luminosity and Period-Color Relations of Classical Cepheids: I. Cepheids in the Galaxy
321 Galactic fundamental-mode Cepheids with good B,V , and (in most cases) I photometry by Berdnikov et al. (2000) and with homogenized color excesses E(B−V) based on Fernie et al. (1995) are used to determine their period-color (P-C) relation in the range 0.4 < log P ∼ < 1.6. The agreement with colors from different model calculations is good to poor. – Distances of 25 Cepheids in open cluster...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1998
ISSN: 0004-637X
DOI: 10.1086/311270