Elliptical galaxies/stellar halos connection [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractCosmological simulations predict that early-type galaxies (ETGs) are the results of extended mass accretion histories. The latter are characterized by different numbers of mergers, mergers’ mass ratios and gas fractions, and timing. Depending on the sequence and nature of these mergers that follow the first phase of the in-situ star formation ...
Arnaboldi, Magda +3 more
openaire +2 more sources
The globular clusters-stellar haloes connection in early-type galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 19 pages, 10 ...
J. C. Forte, E. I. Vega, F. R. Faifer
openalex +5 more sources
Mass Dependence of Galaxy–Halo Alignment in LOWZ and CMASS
The Astrophysical Journal, 2023 We measure the galaxy-ellipticity (GI) correlations for the Sloan Digital Sky Survey Data Release 12 LOWZ and CMASS samples with the shape measurements from the DESI Legacy Imaging Surveys.
Kun Xu, Y. P. Jing, Hongyu Gao
doaj +1 more source
Direct detection of galaxy stellar halos: NGC 3957 as a test case [PDF]
, 2010 We present a direct detection of the stellar halo of the edge-on S0 galaxy NGC 3957, using ultra-deep VLT/VIMOS V and R images. This is achieved with a sky subtraction strategy based on infrared techniques.
P. Jablonka +5 more
semanticscholar +1 more source
Quenching as a Contest between Galaxy Halos and Their Central Black Holes [PDF]
Astrophysical Journal, 2019 Existing models of galaxy formation have not yet explained striking correlations between structure and star formation activity in galaxies, notably the sloped and moving boundaries that divide star-forming from quenched galaxies in key structural ...
Zhu Chen +28 more
semanticscholar +1 more source
THE SL2S GALAXY-SCALE LENS SAMPLE. V. DARK MATTER HALOS AND STELLAR IMF OF MASSIVE EARLY-TYPE GALAXIES OUT TO REDSHIFT 0.8 [PDF]
, 2014 We investigate the cosmic evolution of the internal structure of massive early-type galaxies over half of the age of the universe. We perform a joint lensing and stellar dynamics analysis of a sample of 81 strong lenses from the Strong Lensing Legacy ...
A. Sonnenfeld +17 more
semanticscholar +1 more source
Spatially Resolved Stellar Kinematics of the Ultra-diffuse Galaxy Dragonfly 44. II. Constraints on Fuzzy Dark Matter [PDF]
Astrophysical Journal, 2019 Given the absence of directly detected dark matter (DM) as weakly interacting massive particles, there is strong interest in the possibility that DM is an ultralight scalar field, here denoted as “fuzzy” DM.
A. Wasserman +11 more
semanticscholar +1 more source
Halo Properties from Observable Measures of Environment: I. Halo and Subhalo Masses
The Open Journal of Astrophysics, 2023 The stellar mass - halo mass relation provides a strong basis for connecting galaxies to their host dark matter halos in both simulations and observations.
Haley Bowden +2 more
doaj +1 more source
THE DRAGONFLY NEARBY GALAXIES SURVEY. I. SUBSTANTIAL VARIATION IN THE DIFFUSE STELLAR HALOS AROUND SPIRAL GALAXIES [PDF]
, 2016 Galaxies are thought to grow through accretion; as less massive galaxies are disrupted and merge over time, their debris results in diffuse, clumpy stellar halos enveloping the central galaxy. Here we present a study of the variation in the stellar halos
A. Merritt +3 more
semanticscholar +1 more source
A RICH GLOBULAR CLUSTER SYSTEM IN DRAGONFLY 17: ARE ULTRA-DIFFUSE GALAXIES PURE STELLAR HALOS? [PDF]
, 2016 Observations of nearby galaxy clusters at low surface brightness have identified galaxies with low luminosities, but sizes as large as L⋆ galaxies, leading them to be dubbed “ultra-diffuse galaxies” (UDGs). The survival of UDGs in dense environments like
E. Peng +3 more
semanticscholar +1 more source