Results 1 to 10 of about 370,820 (271)
PAndAS’ CUBS: DISCOVERY OF TWO NEW DWARF GALAXIES IN THE SURROUNDINGS OF THE ANDROMEDA AND TRIANGULUM GALAXIES [PDF]
Astrophysical Journal, 2009 We present the discovery of two new dwarf galaxies, Andromeda XXI and Andromeda XXII, located in the surroundings of the Andromeda and Triangulum galaxies (M31 and M33). These discoveries stem from the first year data of the Pan-Andromeda Archaeological Survey (PAndAS), a photometric survey of the M31/M33 group conducted with the Megaprime/MegaCam wide-
Nicolas F Martin +2 more
exaly +6 more sources
Molecular gas in the Andromeda galaxy [PDF]
Astronomy & Astrophysics, 2005 We present a new 12CO(J=1-0)-line survey of the Andromeda galaxy, M31, covering the bright disk with the highest resolution to date (85 pc along the major axis), observed On-the-Fly (in italics) with the IRAM 30-m telescope.
Allen +72 more
core +4 more sources
The Andromeda Galaxy and Its Star Formation History
Universe, 2023 The state of knowledge of the properties of the Andromeda Galaxy (also known as M31) is reviewed. The spatial structure of the Andromeda Galaxy, its main source populations, and the properties of its gas and dust are discussed.
Denis Leahy
doaj +3 more sources
Andromeda XXXV: The Faintest Dwarf Satellite of the Andromeda Galaxy [PDF]
The Astrophysical Journal LettersWe present the discovery of Andromeda XXXV, the faintest Andromeda satellite galaxy discovered to date, identified as an overdensity of stars in the Pan-Andromeda Archaeological Survey and confirmed via Hubble Space Telescope imaging.
Jose Marco Arias +10 more
doaj +4 more sources
Evidence for a Massive Andromeda Galaxy Using Satellite Galaxy Proper Motions [PDF]
The Astrophysical Journal, 2023 We present new mass estimates for Andromeda (M31) using the orbital angular momenta of four satellite galaxies (M33, NGC 185, NGC 147, and IC 10) derived from existing proper motions, distances, and line-of-sight velocities. We infer two masses for M31: $
Ekta Patel, Kaisey S. Mandel
doaj +6 more sources
Unravelling stellar populations in the Andromeda Galaxy [PDF]
Astronomy & Astrophysics, 2021 To understand the history and formation mechanisms of galaxies it is crucial to determine their current multidimensional structure. Here we focus on stellar population properties, such as metallicity and [$\alpha$/Fe] enhancement.
Bender, Ralf +6 more
core +5 more sources
Gamma-ray image reconstruction of the Andromeda galaxy [PDF]
Journal of Physics: Conference Series, 2021 We analyze about 12 years of Fermi-LAT data in the direction of the Andromeda galaxy (M31). We robustly characterize its spectral and morphological properties against systematic uncertainties related to the modeling of the Galactic diffuse emission.
Céline Armand, Francesca Calore
semanticscholar +10 more sources
The intrinsic ellipticity of dwarf spheroidal galaxies: constraints from the Andromeda system [PDF]
, 2015 We present a study of the intrinsic deprojected ellipticity distribution of the satellite dwarf galaxies of the Andromeda galaxy, assuming that their visible components have a prolate shape, which is a natural outcome of simulations. Different possibilities for the orientation of the major axis of the prolate dwarf galaxies are tested, pointing either ...
Famaey, Benoit +3 more
arxiv +6 more sources
A vast, thin plane of corotating dwarf galaxies orbiting the Andromeda galaxy
Nature, 2013 Dwarf satellite galaxies are thought to be the remnants of the population of primordial structures that coalesced to form giant galaxies like the Milky Way.
Rodrigo A Ibata +2 more
exaly +5 more sources
On the Gamma-Ray Emission of the Andromeda Galaxy M31 [PDF]
The Astrophysical Journal Letters, 2023 Using the γ -ray data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi) for ∼14 yr, we examine the high-energy emission emanating from the center of the Andromeda galaxy M31.
Yi Xing +3 more
doaj +2 more sources