Fossil group origins - IX. Probing the formation of fossil galaxy groups with stellar population gradients of their central galaxies
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201832625
Abstract: Fossil groups (FGs) are galaxy aggregates with an extended and luminous X-ray halo, which are dominated by a very massive early-type galaxy and lack of L* objects. FGs are indeed characterized by a large magnitude… read more here.
Keywords: galaxy; fossil; central galaxies; stellar population ... See more keywords
Halo shapes constrained from a pure sample of central galaxies in KiDS-1000
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201937405
Abstract: We present measurements of $f_h$, the ratio of the aligned components of the projected halo and galaxy ellipticities, for a sample of central galaxies using weak gravitational lensing data from the Kilo-Degree Survey (KiDS). Using… read more here.
Keywords: galaxy; shapes constrained; halo shapes; central galaxies ... See more keywords
Structural and stellar-population properties versus bulge types in Sloan Digital Sky Survey central galaxies
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa328
Abstract: This paper studies pseudo-bulges (P-bulges) and classical bulges (C-bulges) in Sloan Digital Sky Survey (SDSS) central galaxies using the new bulge indicator ΔΣ1, which measures relative central stellar-mass surface density within 1 kpc. We compare ΔΣ1… read more here.
Keywords: density; central galaxies; digital sky; stellar population ... See more keywords
On the environmental influence of groups and clusters of galaxies beyond the virial radius: Galactic conformity at few Mpc scales
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac1020
Abstract: The environment within dark matter haloes can quench the star formation of galaxies. However, environmental effects beyond the virial radius of haloes (≳ 1 Mpc) are less evident. An example is the debated correlation between… read more here.
Keywords: virial radius; central galaxies; galactic conformity; beyond virial ... See more keywords
Off-centre supermassive black holes in bright central galaxies
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1033
Abstract: Supermassive black holes (SMBHs) are believed to reside at the centre of massive galaxies such as brightest cluster galaxies (BCGs). However, as BCGs experienced numerous galaxy mergers throughout their history, the central BH can be… read more here.
Keywords: centre supermassive; supermassive black; bright central; central galaxies ... See more keywords
Late-formed halos prefer to host quiescent central galaxies. I. Observational results
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1175
Abstract: The star formation and quenching of central galaxies are regulated by the assembly histories of their host halos. In this work, we use the central stellar mass to halo mass ratio as a proxy of… read more here.
Keywords: late formed; central galaxies; halos prefer; prefer host ... See more keywords