2019/01/31 by Gagandeep S. Anand, R. Brent Tully, Luca Rizzi +1 · 15 citations
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Compact group #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy group #Group (periodic table) #Local Group #Peculiar velocity #Proper motion #Space Technology and Applications #astro-ph.GA
paper · pdf · doi:10.3847/2041-8213/aafee6
published in The Astrophysical Journal Letters 872(1), L4 (IOP Publishing) · 6 pages, 2 figures, Accepted to ApJL (replacement adjusts/fixes luminosities in table 1)
openalex created_date 2019/01/25 · openalex publication_date 2019/02/07 · arxiv created 2019/02/26 · arxiv updated 2019/02/27 · openalex updated_date 2026/08/06
Abstract It has recently been suggested that the nearby galaxies Maffei 1 and 2 are farther in distance than previously thought, such that they no longer are members of the same galaxy group as IC 342. We reanalyze near-infrared photometry from the Hubble Space Telescope , and find a distance to Maffei 2 of 5.73 ± 0.40 Mpc. With this distance, the Maffei Group lies 2.5 Mpc behind the IC 342 Group and has a peculiar velocity toward the Local Group of −128 ± 33 km s −1 . The negative peculiar velocities of both of these distinct galaxy groups are likely the manifestation of void expansion from the direction of Perseus-Pisces.