Results 31 to 40 of about 7,707 (224)

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

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

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

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

Elemental Abundances in M31: Iron and Alpha Element Abundances in M31’s Outer Halo [PDF]

open access: yes, 2020
We present [Fe/H] and [α/Fe] abundances, derived using spectral synthesis techniques, for stars in M31's outer stellar halo. The 21 [Fe/H] measurements and 7 [α/Fe] measurements are drawn from fields ranging from 43 to 165 kpc in projected distance from ...
Kirby, Evan N.   +6 more
core  

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

Physical oceanography during METEOR cruise M31/3

open access: yes, 2013
Physical oceanography during METEOR cruise M31/
Hemleben, Christoph   +3 more
core   +1 more source

A RUNAWAY RED SUPERGIANT IN M31 [PDF]

open access: yesThe Astronomical Journal, 2015
Accepted by the Astronomical Journal; minor revision to references and ...
Kate Anne Evans, Philip Massey
openaire   +3 more sources

Calibrating Star Formation Rate Prescriptions at Different Scales (10 pc-1 kpc) in M31

open access: yes, 2019
We calibrate commonly used star formation rate (SFR) prescriptions using observations in five kiloparsec-sized fields in the nearby galaxy Andromeda (M31) at 10 pc spatial resolution.
Tomičić, Neven   +11 more
core   +1 more source

Documentation of sediment core M31/2-80_PC4 (M31/2_KL18)

open access: yes, 2012
Documentation of sediment core M31/2-80_PC4 (M31 ...
Hemleben, Christoph   +1 more
core   +1 more source

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