Stellar population of the interacting galaxies M51
Abstract
Stellar photometry of about one million stars in the system of the interacting galaxies M51 (NGC5194/NGC5195) has been carried out on the basis of the ACS/WFC images of the Hubble Space telescope. The distance to the system has been determined by TRGB method and metallicity of red supergiants along the NGC5194 radius has been measured. A comparison of the spacial distribution of stars in the main galaxy NGC5194 with our empirical model of spiral galaxies showed their similarity, in spite of interaction in system M51. It has been discovered that the "feathers", arising as a result of the interaction of galaxies, mainly consist of stars of intermediate age.
Keywords
Cite
@article{arxiv.0712.0703,
title = {Stellar population of the interacting galaxies M51},
author = {E. N. Tikhonov and O. A. Galazutdinova},
journal= {arXiv preprint arXiv:0712.0703},
year = {2007}
}
Comments
12 pages,9 figures, The International Conference "Cosmic Physics", Special Astrophysical Observatory of the Russian Academy of Science, Nizhnij Arkhyz, Karachaevo-Cherkesia, Russia, May 27-31, 2007