Results 41 to 50 of about 28,214 (291)
The stellar halo and tidal streams of Messier 63 [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We present new near-infrared (NIR) observations of M63 from the Extended Disk Galaxy Exploration Science (EDGES) Survey. The extremely deep 3.6 $μ$m mosaic reaches 29 AB mag arcsec$^{-2}$ at the outer reaches of the azimuthally-averaged surface brightness profile.
Staudaher, Shawn M. +4 more
openaire +2 more sources
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN PISCES [PDF]
The Astrophysical Journal, 2013 We report the kinematic discovery of the Pisces Stellar Stream (PSS), at Galactic longitude of roughly l=135 degrees and longitude between -39 < b < -36 deg. We originally identified this halo substructure from velocities of red giant branch stars in Sloan Digital Sky Survey (SDSS) Data Release 8, and confirmed its presence in turnoff stars from ...
Martin, Charles +3 more
openaire +3 more sources
The Spectacular Tidal Tails of Globular Cluster M3 (NGC 5272)
The Astrophysical Journal, 2023 We provide a detailed analysis of the tidal tails of the globular cluster M3 (NGC 5272). We first discover clear extratidal structures with a slight S shape near the cluster. This inspires us to examine the existence of its long tidal tails. We highlight
Yong Yang +4 more
doaj +1 more source
At a Crossroads: Stellar Streams in the South Galactic Cap [PDF]
, 2017 We examine the distribution of old, metal-poor stars in a portion of the recently released PanSTARRs survey. We find an interesting confluence of four new cold stellar stream candidates that appear to converge on or pass near the south Galactic pole. The
Grillmair, Carl J.
core +3 more sources
The mass of our Milky Way [PDF]
, 2020 We perform an extensive review of the numerous studies and methods used to determine the total mass of the Milky Way. We group the various methods into seven broad classes, including: i) estimating Galactic escape velocity using high velocity objects; ii)
Cautun, Marius +4 more
core +3 more sources
On the structure of tidally disrupted stellar debris streams [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 A tidal disruption event (TDE) -- when a star is destroyed by the immense gravitational field of a supermassive black hole -- transforms a star into a stream of tidally-shredded debris. The properties of this debris ultimately determine the observable signatures of TDEs.
Coughlin, Eric R. +3 more
openaire +3 more sources
The kinematic footprints of five stellar streams in Andromeda's halo [PDF]
, 2008 (abridged) We present a spectroscopic analysis of five stellar streams (`A', `B', `Cr', `Cp' and `D') as well as the extended star cluster, EC4, which lies within streamC, all discovered in the halo of M31 from our CFHT/MegaCam survey.
A. Ferguson +67 more
core +2 more sources
A Tangle of Stellar Streams in the North Galactic Cap [PDF]
The Astrophysical Journal Letters, 2018 Abstract Stellar halo substructures were identified using statistical photometric parallax of blue main-sequence turnoff stars from 14 Sloan Digital Sky Survey stripes in the north Galactic cap. Four structures are consistent with previous measurements of the Sagittarius dwarf tidal stream: the leading tail, the “bifurcated” stream, the ...
Jake Weiss +2 more
openaire +2 more sources
The Astrophysical Journal, 2023 The positions and velocities of stellar streams have been used to constrain the mass and shape of the Milky Way's dark matter halo. Several extragalactic streams have already been detected, though it has remained unclear what can be inferred about the ...
Jacob Nibauer +2 more
doaj +1 more source
Constraining the distribution of dark matter in dwarf spheroidal galaxies with stellar tidal streams
, 2015 We use high-resolution N-body simulations to follow the formation and evolution of tidal streams associated to dwarf spheroidal galaxies (dSphs). The dSph models are embedded in dark matter (DM) haloes with either a centrally-divergent 'cusp', or an ...
Errani, Raphaël +2 more
core +1 more source