Origin and evolution of ultra-diffuse galaxies in different environments
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1053
Abstract: We study the formation of ultra-diffuse galaxies (UDGs) using the cosmological hydrodynamical simulation TNG50 of the Illustris-TNG suite. We define UDGs as dwarf galaxies in the stellar mass range $\rm {7.5 \le log (M_{\star }… read more here.
Keywords: star; diffuse galaxies; ultra diffuse; different environments ... See more keywords
Redshift, metallicity and size of two extended dwarf Irregular galaxies: a link between dwarf Irregulars and ultra diffuse galaxies?
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx236
Abstract: We present the results of the spectroscopic and photometric follow-up of two field galaxies that were selected as possible stellar counterparts of local high velocity clouds. Our analysis shows that the two systems are distant… read more here.
Keywords: dwarf irregular; diffuse galaxies; irregular galaxies; ultra diffuse ... See more keywords
The origin of ultra diffuse galaxies: stellar feedback and quenching.
Sign Up to like & getrecommendations! Published in 2018 at "Monthly notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty1153
Abstract: We test if the cosmological zoom-in simulations of isolated galaxies from the FIRE project reproduce the properties of ultra diffuse galaxies (UDGs). We show that outflows that dynamically heat galactic stars, together with a passively… read more here.
Keywords: range; diffuse galaxies; ultra diffuse; origin ultra ... See more keywords
A new formulation of the external field effect in MOND and numerical simulations of ultra-diffuse dwarf galaxies – application to NGC 1052-DF2 and NGC 1052-DF4
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1465
Abstract: The ultra-diffuse dwarf galaxy NGC 1052-DF2 (DF2) has ten (eleven) measured globular clusters (GCs) with a line-of-sight velocity dispersion of $\sigma=7.8^{+5.2}_{-2.2}\,$km/s ($\sigma=10.6^{+3.9}_{-2.3}\,$km/s). Our conventional statistical analysis of the original ten GCs gives $\sigma=8.0^{+4.3}_{-3.0}\,$km/s. The overall… read more here.
Keywords: ngc 1052; mond; formulation; ultra diffuse ... See more keywords
Dark matter and H i in ultra-diffuse galaxy UGC 2162
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1884
Abstract: Our GMRT (Giant Metrewave Radio Telescope) H i observations of the ultra-diffuse galaxy (UDG) UGC 2162, projected ∼ 300 kpc from the centre of the M 77 group, reveal it to a have an extended H i disc ($R_{\rm H\,{\small… read more here.
Keywords: galaxy; dark matter; ultra diffuse; diffuse galaxy ... See more keywords
A model for core formation in dark matter haloes and ultra-diffuse galaxies by outflow episodes
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz3306
Abstract: We present a simple model for the response of a dissipationless spherical system to an instantaneous mass change at its center, describing the formation of flat cores in dark matter haloes and ultra-diffuse galaxies (UDGs)… read more here.
Keywords: haloes ultra; matter; dark matter; formation ... See more keywords