2002/01/17 by Slawomir Piatek, C. Pryor, Carlton Pryor +3 · 1 citation
Physics and Astronomy · #Astrometry #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Dwarf galaxy #Dwarf spheroidal galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Interacting galaxy #Milky Way #Photometry (optics) #Physics #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/339698
published as Astronomical Journal, 123, 2511 (2002) · 25 pages, 11 figures, 3 tables. Accepted for publication in AJ
arxiv created 2002/01/17 · openalex publication_date 2002/05/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
This article studies the structure of the Draco dwarf spheroidal galaxy, with an emphasis on the question of whether the spatial distribution of its stars has been affected by the tidal interaction with the Milky Way, using R - and V -band CCD photometry for 11 fields. The article reports coordinates for the center, a position angle of the major axis, and the ellipticity. It also reports the results of searches for asymmetries in the structure of Draco. These results and searches for a "break" in the radial profile and for the presence of principal sequences of Draco in a color-magnitude diagram for regions more than 50' from the center yield no evidence that tidal forces from the Milky Way have affected the structure of Draco.