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Stellar velocity dispersion and initial mass function gradients in dissipationless galaxy mergers
Carlo Nipoti, Carlo Cannarozzo, Francesco Calura +2
The stellar initial mass function (IMF) is believed to be non-universal among early-type galaxies (ETGs). Parameterizing the IMF with the so-called IMF mismatch parameter $α_{\rm I…
Dark matter halos of massive elliptical galaxies at are well described by the Navarro-Frenk-White profile
Anowar J. Shajib, Tommaso Treu, Simon Birrer +1
We investigate the internal structure of elliptical galaxies at from a joint lensing-dynamics analysis. We model Hubble Space Telescope images of a sample of 23 galaxy-…
The merger-driven evolution of massive early-type galaxies
Carlo Cannarozzo, Carlo Nipoti, Alessandro Sonnenfeld +4
The evolution of the structural and kinematic properties of early-type galaxies (ETGs), their scaling relations, as well as their stellar metallicity and age contain precious infor…
Survey of Gravitationally lensed Objects in HSC Imaging (SuGOHI) -- VII. Discovery and Confirmation of Three Strongly Lensed Quasars
Anton T. Jaelani, Cristian E. Rusu, Issha Kayo +13
We present spectroscopic confirmation of three new two-image gravitationally lensed quasars, compiled from existing strong lens and X-ray catalogs. Images of HSC J091843.2702200…
GAMA+KiDS: Empirical correlations between halo mass and other galaxy properties near the knee of the stellar-to-halo mass relation
Edward N. Taylor, Michelle E. Cluver, Alan Duffy +16
We use KiDS weak lensing data to measure variations in mean halo mass as a function of several key galaxy properties (namely: stellar colour, specific star formation rate, Sersic i…
Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI). VI. Crowdsourced lens finding with Space Warps
Alessandro Sonnenfeld, Aprajita Verma, Anupreeta More +19
Strong lenses are extremely useful probes of the distribution of matter on galaxy and cluster scales at cosmological distances, but are rare and difficult to find. The number of cu…