Galactic membership of BL Her type variable stars
Abstract
As the RR Lyrae stars evolve on the Hertzsprung-Russell diagram they are believed to become short period Type II Cepheids, known as BL Her type (with a pulsation period from to days). Assuming that their mass is around , and that they are low metallicity objects, they were thought to belong to the halo of the Milky Way. We investigated seven Galactic short period Type II Cepheids (BL Her, SW Tau, V553 Cen, DQ And, BD Cas, V383 Cyg, and KT Com) in order to establish their membership within the Galactic structure using the kinematic approach. should provide us with more data needed to conduct the study of the whole sample.
Keywords
Cite
@article{arxiv.1604.06871,
title = {Galactic membership of BL Her type variable stars},
author = {Monika I. Jurkovic and Milan Stojanović and Slobodan Ninković},
journal= {arXiv preprint arXiv:1604.06871},
year = {2016}
}
Comments
4 pages, 3 figure, proceedings of the RRL2015 - High-Precision Studies of RR Lyrae Stars conference, to appear in the Communications from the Konkoly Observatory