Results 31 to 40 of about 47,309 (203)
Time-domain studies of M31 [PDF]
Astronomical Review, 2016 M31, our closest neighboring galaxy, is a stepping stone to studies of stellar evolution, star formation, galaxy evolution, and cosmology. However, due to the difficulties of performing photometry in such crowded fields and the lack of wide cameras to encompass the entire galaxy, there has not been a complete census of the stellar contents of M31.
openaire +2 more sources
The Astrophysical Journal, 1997 This Letter gives the results of a determination of the thickness and the optimum inclination (i.e., the angle between the galactic plane and the tangent plane) of M31, which are 1.01 kpc and 775, respectively. The method for determining the thickness of spiral galaxies is proposed by Peng, on the basis of the solution of Poisson's equation for a ...
Jun Ma, Qiu-He Peng, Qiu-Sheng Gu
openaire +1 more source
Planck's confirmation of the M31 disk and halo rotation [PDF]
, 2014 Planck's data acquired during the first 15.4 months of observations towards both the disk and halo of the M31 galaxy are analyzed. We confirm the existence of a temperature asymmetry, previously detected by using the 7-year WMAP data, along the direction
De Paolis, F. +10 more
core +1 more source
ChildrenBackground: Reports on the survival of infants born at periviable gestation (GA of ≤24 weeks and birth weight of
Ibrahim Qattea +5 more
doaj +1 more source
The satellite distribution of M31
, 2005 (Abridged) The spatial distribution of the Galactic satellite system plays an important role in Galactic dynamics and cosmology, where its successful reproduction is a key test of simulations of galaxy halo formation.
Irwin, Mike, McConnachie, Alan
core +2 more sources
DOUBLE MODE CEPHEIDS IN M31 [PDF]
The Astrophysical Journal, 2013 submitted to ...
openaire +2 more sources
Constraints on the Formation of M31’s Stellar Halo from the SPLASH Survey
Galaxies, 2017 The SPLASH (Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo) Survey has observed fields throughout M31’s stellar halo, dwarf satellites, and stellar disk.
Karoline Gilbert
doaj +1 more source
Searching for New Globular Clusters in M31 with Gaia EDR3
The Astrophysical Journal, 2023 We have found 50 new globular cluster (GC) candidates around M31 with Gaia Early Data Release 3 (EDR3), with the help of Pan-STARRS1 DR1 magnitudes and Pan-Andromeda Archaeological Survey (PAndAS) images.
Yilun Wang +7 more
doaj +1 more source
The Spatial and Emission Properties of the Large [O iii] Emission Nebula Near M31
The Astrophysical Journal, 2023 Drechsler et al. reported the unexpected discovery of a 1.°5 long [O iii ] emission nebula 1.°2 southeast of the M31 nucleus. Here we present additional images of this large emission arc, called the Strottner–Drechsler–Sainty Object (SDSO), along with ...
Robert A. Fesen +10 more
doaj +1 more source
, 2012 We study the future orbital evolution and merging of the MW-M31-M33 system, using a combination of collisionless N-body simulations and semi-analytic orbit integrations.
Anderson, Jay +4 more
core +1 more source