Results 21 to 30 of about 406 (178)
Critical summer foraging tradeoffs in a subarctic ungulate
Ecology 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
Integrative cross-tissue analysis unveils complement-immunoglobulin augmentation and dysbiosis-related fatty acid metabolic remodeling during mammalian aging. [PDF]
ImetaOur study provides a comprehensive multi‐omics profile of aging, integrating proteomic, metabolomic, and metagenomic analyses across diverse tissues and plasma. We identified the synergistic amplification of the circulating complement system and tissue‐wide immunoglobulin accumulation as key molecular drivers of inflammaging.
Zhang F +17 more
europepmc +2 more sources
An LBT view of the Andromeda’s satellite galaxies [PDF]
EPJ Web of Conferences, 2017 Results are presented on deep (V ∼ 26.5 mag) time series observations of four dwarf spheroidal galaxies (dSphs) in the Andromeda (M31) complex, namely, And XIX, And XXI, And XXV and And XXVII, that we have observed with the Large Binocular Telescope (LBT). We discovered in these galaxies a total of over 200 RR Lyrae stars and 19 Anomalous Cepheids.
Cusano, Felice +3 more
openaire +4 more sources
On the Gamma-Ray Emission of the Andromeda Galaxy M31
The 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
Hypervelocity stars from the Andromeda galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Hypervelocity stars (HVSs) discovered in the Milky Way (MW) halo are thought to be ejected from near the massive black hole (MBH) at the galactic centre. In this paper we investigate the spatial and velocity distributions of the HVSs which are expected to be similarly produced in the Andromeda galaxy (M31).
Sherwin, Blake D. +2 more
openaire +4 more sources
3.55 keV X-ray line signal from excited dark matter in radiative neutrino model
Physics 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]
The 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
SEEN AND UNSEEN TIDAL CAUSTICS IN THE ANDROMEDA GALAXY [PDF]
The Astrophysical Journal, 2010 ApJ ...
Sanderson, Robyn Ellyn +1 more
openaire +5 more sources
DESI Observations of the Andromeda Galaxy: Revealing the Immigration History of Our Nearest Neighbor
The Astrophysical Journal, 2023 We present Dark Energy Spectroscopic Instrument (DESI) observations of the inner halo of M31, which reveal the kinematics of a recent merger—a galactic immigration event—in exquisite detail.
Arjun Dey +47 more
doaj +1 more source
A recurrent nova super-remnant in the Andromeda galaxy [PDF]
Nature, 2019 30 pages, 8 ...
Darnley, M.J. +17 more
openaire +7 more sources