Results 31 to 40 of about 12,566,242 (368)
Strangulation in Galaxy Groups [PDF]
The Astrophysical Journal, 2007 We use a cosmological chemodynamical simulation to study how the group environment impacts the star formation properties of disk galaxies. The simulated group has a total mass of M~8x10^12 Msun and a total X-ray luminosity of L_X~10^41 erg s^-1. Our simulation suggests that ram pressure is not sufficient in this group to remove the cold disk gas from a
Daisuke Kawata +2 more
openaire +3 more sources
Comparing galaxy populations in compact and loose groups of galaxies [PDF]
Astronomy & Astrophysics, 2013 Accepted for publication in Astronomy & Astrophysics (A&A)
Martinez, Hector Jose Ariel +2 more
openaire +5 more sources
Search for Dark Matter Annihilation in Galaxy Groups. [PDF]
Physical Review Letters, 2017 We use 413 weeks of publicly available Fermi Pass 8 gamma-ray data combined with recently developed galaxy group catalogs to search for evidence of dark matter annihilation in extragalactic halos.
M. Lisanti +3 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We present a four-step group-finding algorithm for the Gas in Galaxy Groups (G3) initiative, a spin-off of the z ∼ 0 REsolved Spectroscopy Of a Local VolumE (RESOLVE) and Environmental COntext (ECO) surveys.
Zackary L. Hutchens +12 more
doaj +1 more source
Galaxy Groups Within 3500 km s−1 [PDF]
, 2017 A study of the group properties of galaxies in our immediate neighborhood provides a singular opportunity to observationally constrain the halo mass function, a fundamental characterization of galaxy formation.
E. Kourkchi, R. Tully
semanticscholar +1 more source
Direct evidence of hierarchical assembly at low masses from isolated dwarf galaxy groups [PDF]
Nature Astronomy, 2017 The demographics of dwarf galaxy populations have long been in tension with predictions from the Λ cold dark matter (ΛCDM) paradigm1–4. If primordial density fluctuations were scale-free as predicted, dwarf galaxies should themselves host dark-matter ...
S. Stierwalt +7 more
semanticscholar +1 more source
Lost but not forgotten: Intracluster light in galaxy groups and clusters [PDF]
, 2017 With Hubble Space Telescope imaging, we investigate the progenitor population and formation mechanisms of the intracluster light (ICL) for 23 galaxy groups and clusters ranging from 3$\times10^{13} 10^{11.6}$ M$_\odot$), while by 100 kpc this colour is ...
T. DeMaio +6 more
semanticscholar +1 more source
Galaxy groups in the low-redshift Universe [PDF]
, 2017 We apply a halo-based group finder to four large redshift surveys, the 2MRS, 6dFGS, SDSS and 2dFGRS, to construct group catalogs in the low-redshift Universe. The group finder is based on that of Yang et al.
Seunghwan Lim +4 more
semanticscholar +1 more source
Accuracy and interpretability of smartwatch electrocardiogram for early detection of atrial fibrillation: A systematic review and meta‐analysis [PDF]
Journal of Arrhythmia, Volume 41, Issue 3, June 2025.The smartwatch ECG algorithm achieved 86% sensitivity and 94% specificity with an sAUC of 96%, while manual readings by trained personnel reached 96% sensitivity, 95% specificity, and an sAUC of 98% in a brand‐specific subgroup analysis. These findings demonstrate that the smartwatch ECG detects AFib, although 3% of results are unreadable.
Muhammad Iqhrammullah +11 more
wiley +2 more sources
Environmental Dependence of the Mass–Metallicity Relation in Cosmological Hydrodynamical Simulations
The Astrophysical Journal, 2023 We investigate the environmental dependence of the gas-phase metallicity for galaxies at z = 0 to z ≳ 2 and the underlying physical mechanisms driving this dependence using state-of-the-art cosmological hydrodynamical simulations.
Kai Wang, Xin Wang, Yangyao Chen
doaj +1 more source