The proper motion of the Local Group galaxy IC 10

2006/10/26 by A. Brunthaler, M. J. Reid, H. Falcke +2 · 67 citations
Mathematics · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Classical mechanics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy group #Geodesy #Geography #Geometry #Group (periodic table) #Local Group #Maser #Mathematics #Milky Way #Motion (physics) #Physics #Position (finance) #Proper motion #Quantum mechanics #Quasar #Radio Astronomy Observations and Technology #Radio galaxy #Rotation (mathematics) #Stars #Very Long Baseline Array #astro-ph

paper · pdf · doi:10.1051/0004-6361:20066430

published in Astronomy and Astrophysics 462(1), 101-106 (EDP Sciences) · Astronomy & Astrophysics, accepted, 7 pages, 6 figures, also available at http://www.mpifr-bonn.mpg.de/staff/abrunthaler/pub.shtml

arxiv created 2006/10/26 · openalex publication_date 2006/11/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We have measured the proper motion of the Local Group galaxy IC 10 with the Very Long Baseline Array by measuring the position of an H2O maser relative to two background quasars over 4.3 years. After correction for the rotation of the Milky Way and IC 10, we obtain a motion of – μas yr-1 toward the East and μas yr-1 toward the North. This corresponds to a total space velocity of km s-1 relative to the Milky Way for an assumed distance of kpc. Assuming that IC 10 and M 33, for which also a proper motion measurement exists, are bound to M 31, we calculate a lower limit for the mass of M 31 of .

Citations

• The Proper Motion of Sagittarius A*. II. The Mass of Sagittarius A*
• The NRAO VLA Sky Survey
• An Extra-Galactic Object 3° from the Plane of the Galaxy
• The Distance to the Perseus Spiral Arm in the Milky Way
• Water Maser Motions in W3(OH) and a Determination of Its Distance
• SINFONI in the Galactic Center: Young Stars and Infrared Flares in the Central Light‐Month
• Constraints on the Proper Motion of the Andromeda Galaxy Based on the Survival of Its Satellite M33

Cited by

• Ubiquitous Water Masers in Nearby Star-Forming Galaxies
• Solo dwarfs – III. Exploring the orbital origins of isolated Local Group galaxies with Gaia Data Release 2
• WATER MASERS IN THE ANDROMEDA GALAXY. II. WHERE DO MASERS ARISE?
• The Discovery of Water Maser Emission from Eight Nearby Galaxies
• DISCOVERY OF THE FIRST METHANOL (CH 3 OH) MASER IN THE ANDROMEDA GALAXY (M31)
• The Sardinia Radio Telescope
• Proper motions of the satellites of M31
• Dwarf galaxy planes: the discovery of symmetric structures in the Local Group
• THE M31 VELOCITY VECTOR. II. RADIAL ORBIT TOWARD THE MILKY WAY AND IMPLIED LOCAL GROUP MASS