Results 51 to 60 of about 10,527 (159)
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
Caldú-Primo, A., Schruba, A.
openaire +3 more sources
Philosophical Issues, Volume 35, Issue 1, Page 17-28, October 2025.ABSTRACT When does an agent possess a proposition P as evidence? According to Timothy Williamson, the answer is when, and only when, they know that P. Call this view E = K. In this article, I point out an unwanted consequence of E = K, which is that people who suffer from anxiety have impoverished empirical evidence due to their anxiety.
Rhys Borchert
wiley +1 more source
Galactic halo stellar structures in the Triangulum-Andromeda region [PDF]
, 2007 This letter reports on the Galactic stellar structures that appear in the foreground of our Canada-France-Hawaii-Telecopse/MegaCam survey of the halo of the Andromeda galaxy.
Ibata R. +3 more
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A comparison of the Andromeda and Milky Way galaxies [PDF]
Symposium - International Astronomical Union, 1985 A comparison of some of the basic properties of M31 and the Milky Way indicates that in almost every respect M31 is larger than the Galaxy. It is more luminous, redder, more massive, and of earlier Hubble type. A detailed comparison of the spiral structure, based on optical tracers, for comparable areas in the outer parts of each galaxy shows ...
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Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley +1 more source
Constraints on the Proper Motion of the Andromeda Galaxy Based on the Survival of Its Satellite M33 [PDF]
, 2005 A major uncertainty in the dynamical history of the local group of galaxies originates from the unknown transverse speed of the Andromeda galaxy (M31) relative to the Milky Way. We show that the recent VLBA measurement of the proper motion of Andromeda's
Abraham Loeb +4 more
core +4 more sources
Population Gradients in Local Group Dwarf Spheroidals
, 2001 We present a systematic and homogeneous analysis of population gradients for the Local Group dwarf spheroidals (dSphs) Carina, Sculptor, Sextans, Tucana, Andromeda I-III, V, and VI.
Andrew Dolphin +15 more
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Organized Chaos: Scatter in the relation between stellar mass and halo mass in small galaxies [PDF]
, 2016 We use Local Group galaxy counts together with the ELVIS N-body simulations to explore the relationship between the scatter and slope in the stellar mass vs. halo mass relation at low masses, $M_\star \simeq 10^5 - 10^8 M_\odot$. Assuming models with log-
Bardwell, Emma +3 more
core +2 more sources
Mass modelling the Andromeda Dwarf Galaxies: Andromeda VI and Andromeda XXIII
Monthly Notices of the Royal Astronomical SocietyABSTRACT Accurately mapping the mass profiles of low mass dwarf spheroidal (dSph) galaxies allows us to test predictions made by dark matter (DM) models. To date, such analyses have primarily been performed on Milky Way (MW) satellites.
Connor S Pickett +9 more
openaire +2 more sources
Morphological transformation of dwarf galaxies in the Local Group [PDF]
, 2015 In the Local Group there are three main types of dwarf galaxies: Dwarf Irregulars, Dwarf Spheroidals, and Dwarf Ellipticals. Intermediate/transitional types are present as well.
Carraro, Giovanni
core +1 more source