Results 1 to 10 of about 11,151 (256)
Rotational Curves of the Milky Way Galaxy and Andromeda Galaxy in Light of Vacuum Polarization around Eicheon [PDF]
Universe, 2023 Eicheon properties are discussed. It is shown that the eicheon surface allows setting a boundary condition for the vacuum polarization and obtaining a solution describing the dark matter tail in the Milky Way Galaxy. That is, the dark matter in the Milky
Sergey L. Cherkas +1 more
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Kinematics and Metallicity of the Dwarf Spheroidal Galaxy Andromeda XVIII
The Astrophysical JournalAndromeda XVIII is an isolated dwarf galaxy 579 kpc away from the nearest large galaxy, M31. It is a candidate “backsplash galaxy” that might have been affected by a close passage to M31.
Kateryna A. Kvasova +2 more
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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
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Hypervelocity Stars from the Andromeda Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Hypervelocity stars (HVSs) discovered in the Milky Way (MW) halo are thought to be ejected from near the massive black hole (MBH) at the galactic centre.
Abraham Loeb +16 more
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MOLECULAR GAS VELOCITY DISPERSIONS IN THE ANDROMEDA GALAXY [PDF]
The Astronomical Journal, 2016 ABSTRACT In order to characterize the distribution of molecular gas in spiral galaxies, we study the line profiles of CO (1 – 0) emission in Andromeda, our nearest massive spiral galaxy. We compare observations performed with the IRAM 30 m single-dish telescope and with the CARMA interferometer at a common resolution of 23 arcsec ≈ 85 pc
Anahi Caldú-Primo, Andreas Schruba
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The Role of Pressure in the Structure and Stability of GMCs in the Andromeda Galaxy [PDF]
The Astrophysical JournalWe revisit the role of pressure in the structure, stability, and confinement of Giant Molecular Clouds (GMCs) in light of recently published observations and analysis of the GMCs in the Andromeda galaxy (M31). That analysis showed that, in the absence of
Charles J. Lada +3 more
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Andromeda XXXV: The Faintest Dwarf Satellite of the Andromeda Galaxy
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
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The Andromeda Dwarf Spheroidal Galaxies [PDF]
Symposium - International Astronomical Union, 1999 Our current knowledge of M31's dwarf spheroidal companions is reviewed. Two topics of recent interest constitute the bulk of this review. First, color-magnitude diagrams reaching below the horizontal branch have been constructed for two M31 dwarf spheroidals, based on images from HST/WFPC2. The horizontal branches are predominantly red in both galaxies,
T. E. Armandroff, G. S. Da Costa
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Gravitational Microlensing toward the Andromeda Galaxy
, 2006 Aktuelle Forschungsergebnisse deuten darauf hin, dass das Universum insgesamt aus 72% Dunkler Energie, 23% nichtbaryonischer Materie und 4.5% baryonischer Materie besteht. Von dieser baryonischen Materie kann bisher nur ein neuntel sicher zugeordnet werden.
A. Riffeser
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Evidence for a Massive Andromeda Galaxy Using Satellite Galaxy Proper Motions
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
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