Results 21 to 30 of about 4,164 (188)

Planetary Nebula Kinematics in M31 [PDF]

open access: yesThe Astrophysical Journal, 2004
accepted to ApJ; main body of paper is 36 pages, including 14 ...
Hurley-Keller, Denise   +3 more
openaire   +2 more sources

M31* and its circumnuclear environment [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
Submitted to MNRAS, 33 pages, 9 figures.
Li, Z, Wang, QD, Wakker, BP
openaire   +3 more sources

The nucleus of M31

open access: yesThe Astrophysical Journal, 1974
The nucleus of M31 was photographed at a resolution of 0.2 sec with the 91-cm balloon-borne Stratoscope II telescope. At the half-intensity level, the nucleus was observed to be elliptical with its major axis lying in position angle of 63 (plus or minus 5) deg.
E. S. Light   +2 more
openaire   +1 more source

Discovery of 20 UV-emitting SNRs in M31 with UVIT

open access: yesThe Astronomical Journal, 2023
We present the first catalog of supernova remnants (SNRs) in M31 that exhibit diffuse ultraviolet (UV) emission. UV images of M31 were obtained by the Ultraviolet Imaging Telescope (UVIT) on the AstroSat satellite, and the list of SNRs was obtained from ...
Denis Leahy   +2 more
doaj   +1 more source

THE RED SUPERGIANT CONTENT OF M31* [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT We investigate the red supergiant (RSG) population of M31, obtaining the radial velocities of 255 stars. These data substantiate membership of our photometrically selected sample, demonstrating that Galactic foreground stars and extragalactic RSGs can be distinguished on the basis of B − V, V − R two-color diagrams. In addition,
Philip Massey, Kate Anne Evans
openaire   +3 more sources

The Bulge of M31 [PDF]

open access: yesPublications of the Astronomical Society of Australia, 2013
AbstractBulges are not just elliptical subgalaxies situated in the centers of large spirals, though it might seem so from their ages and chemistry. In fact, bulge kinematics have been known to be different since the first long slit spectra were obtained.
openaire   +3 more sources

Could M31 be the result of a major merger?

open access: yesEPJ Web of Conferences, 2012
We investigated a scenario in which M31 could be the remnant of a gas-rich major merger. Galaxy merger simulations, highly constrained by observations, were run using GADGET 2 in order to reproduce M31. We succeeded in reproducing the global shape of M31,
Puech M.   +5 more
doaj   +1 more source

Distribution and Motions of HI in M31 [PDF]

open access: yesSymposium - International Astronomical Union, 1985
It has become clear in the past few years that the distribution and kinematics of HI in M31 is far from simple. The new high-resolution survey made with the Westerbork SRT in the 21-cm line of atomic hydrogen by Brinks and Shane (1983) shows this dramatically. Along almost any line of sight through M31 two separate velocity systems are sampled.
E. Brinks, W. B. Burton
openaire   +2 more sources

Hospital Factors Associated with the Survival of Infants Born at Periviable Gestation: The USA National Database

open access: yesChildren
Background: 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

On the Gamma-Ray Emission of the Andromeda Galaxy M31

open access: yesThe 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   +1 more source

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