Tracing the anemic stellar halo of M 101
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936994
Abstract: Models of galaxy formation in a cosmological context predict that massive disk galaxies should have structured extended stellar halos. Recent studies in integrated light, however, report a few galaxies, including the nearby disk galaxy M101,… read more here.
Keywords: stellar halo; density profiles; halo mass; halo ... See more keywords
The tale of the tail – disentangling the high transverse velocity stars in Gaia DR2
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa077
Abstract: Although the stellar halo accounts for just ~1% of the total stellar mass of the Milky Way, the kinematics of halo stars encode valuable information about the origins and evolution of our Galaxy. It has… read more here.
Keywords: stellar halo; transverse velocity; velocity; chemistry ... See more keywords
The dependence of the galaxy stellar-to-halo mass relation on galaxy morphology
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3053
Abstract: We investigate the dependence of the local galaxy stellar-to-halo mass relation (SHMR) on galaxy morphology. We use data from the Sloan Digital Sky Survey DR7 with morphological classifications from Galaxy Zoo, and compare with the… read more here.
Keywords: galaxy; stellar halo; halo mass; mass ... See more keywords
The distinct stellar-to-halo mass relations of satellite and central galaxies: insights from the IllustrisTNG simulations
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3505
Abstract: We study the stellar-to-halo mass relation (SHMR) for central and satellite galaxies with total dynamical masses above 10^10.5 Msun using the suite of cosmological magneto-hydrodynamical simulations IllustrisTNG. In particular, we quantify environmental effects on satellite… read more here.
Keywords: satellite; stellar halo; halo mass; dynamical mass ... See more keywords
Modelling the stellar halo with RR-Lyrae stars
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab3711
Abstract: A seven-parameter distribution function (DF) is fitted to 20 000 RR-Lyrae stars for which only astrometric data are available. The observational data are predicted by the DF in conjunction with the gravitational potential of a self-consistent… read more here.
Keywords: lyrae stars; halo lyrae; modelling stellar; halo ... See more keywords
The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1123
Abstract: The stellar halo of the Milky Way records the history of its interactions with dwarf galaxies, whose subsequent destruction results in the formation of an extended stellar component. Recent works have suggested that galaxies with… read more here.
Keywords: stellar halo; way; galaxies stellar; progenitor ... See more keywords
Diverse stellar haloes in nearby Milky Way mass disc galaxies
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stw2992
Abstract: We have examined the resolved stellar populations at large galactocentric distances along the minor axis (from 10 kpc up to between 40 and 75 kpc), with limited major axis coverage, of six nearby highly-inclined Milky… read more here.
Keywords: stellar halo; stellar haloes; mass; milky way ... See more keywords
The first all-sky view of the Milky Way stellar halo with Gaia+2MASS RR Lyrae
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx2819
Abstract: We exploit the first Gaia data release to study the properties of the Galactic stellar halo as traced by RR Lyrae. We demonstrate that it is possible to select a pure sample of RR Lyrae… read more here.
Keywords: stellar halo; halo; milky way; lyrae ... See more keywords
Galaxy spin as a formation probe: the stellar-to-halo specific angular momentum relation
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx3168
Abstract: We derive the stellar-to-halo specific angular momentum relation (SHSAMR) of galaxies at z = 0 by combining (i) the standard Acold dark matter tidal torque theory, (ii) the observed relation between stellar mass and specific… read more here.
Keywords: stellar halo; angular momentum; specific angular; relation ... See more keywords
Co-formation of the disc and the stellar halo
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty982
Abstract: Using a large sample of Main Sequence stars with 7-D measurements supplied by Gaia and SDSS, we study the kinematic properties of the local (within ∼10 kpc from the Sun) stellar halo. We demonstrate that… read more here.
Keywords: stellar halo; formation disc; halo formation; halo ... See more keywords
Stellar-to-Halo Mass Ratio and Dark Matter Profiles
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy Reports"
DOI: 10.1134/s1063772921070039
Abstract: This paper seeks to verify if the inner halo density profile depends on the ratio between stellar and halo mass. The work follows the previous one by Del Popolo and Pace (2016), in which we… read more here.
Keywords: paper; del popolo; mass ratio; stellar halo ... See more keywords