Results 21 to 30 of about 154,665 (207)

Critical summer foraging tradeoffs in a subarctic ungulate

open access: yesEcology and Evolution, Volume 11, Issue 24, Page 17835-17872, December 2021., 2021
Summer diets are crucial for subarctic herbivores and are affected by weather, insect harassment and a variety of environmental changes linked to climate. We used GPS video‐camera collars to observe behavioral patterns and summer diets of migratory caribou (Rangifer tarandus granti) across Alaska, USA and Yukon, Canada.
Libby Ehlers   +6 more
wiley   +1 more source

On the Possible Asymmetry in Gamma Rays from Andromeda Due to Inverse Compton Scattering of Star Light on Electrons from Dark Matter Annihilation

open access: yesGalaxies, 2023
Dark matter is a popular candidate to a new source of primary-charged particles, especially positrons in cosmic rays, which are proposed to account for observable anomalies.
Konstantin Belotsky, Maxim Solovyov
doaj   +1 more source

The Possibility of Detecting Planets in the Andromeda Galaxy [PDF]

open access: yesThe Astrophysical Journal, 2006
total 8 pages, including 8 figures, ApJ ...
Chung, S. -J.   +10 more
openaire   +2 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

3.55 keV X-ray line signal from excited dark matter in radiative neutrino model

open access: yesPhysics Letters B, 2014
We study an exciting dark matter scenario in a radiative neutrino model to explain the X-ray line signal at 3.55 keV recently reported by XMN-Newton X-ray observatory using data of various galaxy clusters and Andromeda galaxy.
Hiroshi Okada, Takashi Toma
doaj   +1 more source

RED SUPERGIANTS IN THE ANDROMEDA GALAXY (M31) [PDF]

open access: yesThe Astrophysical Journal, 2009
Red supergiants are a short-lived stage in the evolution of moderately massive stars (10-25Mo), and as such their location in the H-R diagram provides an exacting test of stellar evolutionary models. Since massive star evolution is strongly affected by the amount of mass-loss a star suffers, and since the mass-loss rates depend upon metallicity, it is ...
Massey, Philip   +7 more
openaire   +2 more sources

YELLOW SUPERGIANTS IN THE ANDROMEDA GALAXY (M31) [PDF]

open access: yesThe Astrophysical Journal, 2009
Accepted by the Astrophysical ...
Drout, Maria R.   +4 more
openaire   +2 more sources

MOLECULAR GAS VELOCITY DISPERSIONS IN THE ANDROMEDA GALAXY [PDF]

open access: yesThe 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

SEEN AND UNSEEN TIDAL CAUSTICS IN THE ANDROMEDA GALAXY [PDF]

open access: yesThe Astrophysical Journal, 2010
ApJ ...
Sanderson, Robyn Ellyn   +1 more
openaire   +5 more sources

Eclipsing binaries suitable for distance determination in the Andromeda galaxy [PDF]

open access: yes, 2006
The Local Group galaxies constitute a fundamental step in the definition of cosmic distance scale. Therefore, obtaining accurate distance determinations to the galaxies in the Local Group, and notably to the Andromeda Galaxy (M 31), is essential for ...
Vilardell Sallés, Francesc   +5 more
core   +1 more source

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