2007/12/05 by E. N. Tikhonov, Tikhonov, E. N., O. A. Galazutdinova +1
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Calibration and Measurement Techniques #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.0712.0703
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
arxiv created 2007/12/05 · openalex publication_date 2007/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.