Results 111 to 120 of about 7,707 (224)

Kinematics and Metallicity of the Dwarf Spheroidal Galaxy Andromeda XVIII

The Astrophysical Journal
Andromeda 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, Evan N. Kirby, Rachael L. Beaton   +2 more
doaj   +1 more source

AstroSat UVIT Survey of M31: New Compact Source Catalog

The Astrophysical Journal Supplement Series
An ultraviolet survey of M31 was carried out during 2017–2023 with the UltraViolet Imaging Telescope (UVIT) instrument on board the AstroSat Observatory. Here we present far- and near-ultraviolet (FUV and NUV) observations from the M31 UVIT survey, which
Denis Leahy, Sujith Ranasinghe, Saptadwipa Mitra, Kripansh Rawal   +3 more
doaj   +1 more source

Involucramiento de producto y lealtad de marca para productos de consumo masivo en Bogotá D.C.☆

Estudios Gerenciales, 2013
Mediante este artículo, se busca validar algunas hipótesis referentes a la relación entre involucramiento de pro- ducto y lealtad de marca para productos de consumo masivo en Bogotá (Colombia).
Pedro Julián Ramírez Angulo, Edison Jair Duque Oliva   +1 more
doaj   +1 more source

Galactic Centre and M31 EXCESS

, 2018
Excesses with respect to models of the Galactic diffuse emission in gamma-ray flux have been found around a few GeV at the position of the Galactic Centre (GC) and M31.
FERMI-LAT Collaboration, Håkansson, Nils   +1 more
core   +1 more source

Andromeda XVII:A new low-luminosity satellite of M31 [PDF]

, 2008
We report the discovery of a new dwarf spheroidal galaxy near M31 on the basis of INT/WFC imaging. The system, Andromeda XVII (And XVII), is located at a projected radius of ≈44 kpc from M31, has a line-of-sight distance of 794 ± 40 kpc measured using ...
Ferguson, A. M.N., Tanvir, N. R., Irwin, M. J., Ibata, R. A., Lewis, G. F., Huxor, A. P., Ferguson, A. M. N.   +6 more
core   +1 more source

La relación gas-polvo en M31 [PDF]

, 2020
Se estudió la relación gas-polvo en M31. La relación deducida es sustancialmente más baja que la obtenida por van den Bergh (1975), cuyo valor resultó idéntico al que se observa en nuestra Galaxia (Knapp & Kerr, 1974).
Gergely, T.E., Bajaja, Esteban
core  

PHAST. The Panchromatic Hubble Andromeda Southern Treasury. I. Ultraviolet and Optical Photometry of over 90 Million Stars in M31

The Astrophysical Journal
The Panchromatic Hubble Andromeda Southern Treasury (PHAST) is a large 195-orbit Hubble Space Telescope program imaging ∼0.45 deg ^2 of the southern half of M31's star-forming disk at optical and near-ultraviolet (NUV) wavelengths.
Zhuo Chen, Benjamin Williams, Dustin Lang, Andrew Dolphin, Meredith Durbin, Julianne J. Dalcanton, Adam Smercina, Léo Girardi, Claire E. Murray, Eric F. Bell, Martha L. Boyer, Richard D’Souza, Karoline Gilbert, Karl Gordon, Puragra Guhathakurta, Francois Hammer, L. Clifton Johnson, Tod R. Lauer, Margaret Lazzarini, Jeremiah W. Murphy, Ekta Patel, Amanda Quirk, Mariangelly Díaz Rodríguez, Julia Christine Roman-Duval, Robyn E. Sanderson, Anil Seth, Tobin M. Wainer, Daniel R. Weisz   +27 more
doaj   +1 more source

Non-thermal emission in M31 and M33 [PDF]

Context. Spiral galaxies M31 and M33 are among the γ-ray sources detected by the Fermi Large Area Telescope (LAT). Aims. We aim to model the broadband non-thermal emission of the central region of M31 (a LAT point source) and of the disk of M33 (a LAT ...
Massimo Persic, Riccardo Rando, Persic, Massimo, Rando, Riccardo, Yoel Rephaeli, Rephaeli, Yoel   +5 more
core   +1 more source

Encounters between M33 and Present-day M31 Satellites Hint at a Previous Group Accretion

The Astrophysical Journal
This work investigates whether two known Andromeda (M31) satellites, Pisces (LGS 3) and Andromeda XVI (And XVI), have interacted with M33, M31’s most massive satellite.
Ekta Patel, Paul Bennet, Sangmo Tony Sohn, Mark A. Fardal, Roeland P. van der Marel   +4 more
doaj   +1 more source

Far-ultraviolet to Far-infrared Spectral Energy Distribution Modeling of the Star Formation History across M31

The Astronomical Journal
Our neighboring galaxy M31 has been recently surveyed at the far- and near-ultraviolet (FUV and NUV) with the UVIT telescope on AstroSat, which provides unprecedented sensitivity to young stellar populations.
Denis A. Leahy, Jakob Hansen, Andrew M. Hopkins   +2 more
doaj   +1 more source