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We use a hybrid observational/theoretical approach to study the relation between galaxy kinematics and the derived stellar and halo masses of galaxies up to z=3 as a function of stellar mass, redshift and morphology. Our observational…

Astrophysics of Galaxies · Physics 2018-08-15 Christopher J. Conselice , Jonathan W. Twite , David P. Palamara , William Hartley

We estimate the mass of the central black hole in our Galaxy from stellar kinematical data published by Ghez et al. (1998) and Genzel et al. (2000). For this we develop a method, related to Merritt (1993), for non-parametrically…

Astrophysics · Physics 2009-11-06 Dalia Chakrabarty , Prasenjit Saha

(shortened) We develop and test a method to compute mass and auto-correlation functions of rich clusters of galaxies from linear density fluctuations, based on the formalism of Gaussian peaks (Bardeen et al 1986). The essential, new…

Astrophysics · Physics 2009-10-30 Renyue Cen

We study dynamical mass measurements of galaxy clusters contaminated by interlopers and show that a modern machine learning (ML) algorithm can predict masses by better than a factor of two compared to a standard scaling relation approach.…

Cosmology and Nongalactic Astrophysics · Physics 2016-11-09 M. Ntampaka , H. Trac , D. J. Sutherland , S. Fromenteau , B. Poczos , J. Schneider

We present the HI mass inventory for the RESOLVE survey, a volume-limited, multi-wavelength census of >1500 z=0 galaxies spanning diverse environments and complete in baryonic mass down to dwarfs of 10^9 Msun. This first 21cm data release…

Linking globular clusters (GCs) to the assembly of their host galaxies is an overarching goal in GC studies. The inference of tight scaling relations between GC system properties and the mass of both the stellar and dark halo components of…

The relation between the total mass contained in the globular clusters of a galaxy and the mass of its dark matter halo has been found observationally to be nearly linear over five decades of mass. However, the high-mass end of this…

Astrophysics of Galaxies · Physics 2023-07-05 Veronika Dornan , William E. Harris

We examine the projected correlation of galaxies with mass from small scales (<few hundred kpc) where individual dark matter halos dominate, out to 15 Mpc where correlated large-scale structure dominates. We investigate these profiles as a…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Ami Choi , J. Anthony Tyson , Chris B. Morrison , M. James Jee , Samuel J. Schmidt , Vera E. Margoniner , David M. Wittman

We present an estimate of the galaxy stellar mass function and its division by morphological type in the local (0.025 < z < 0.06) Universe. Adopting robust morphological classifications as previously presented (Kelvin et al.) for a sample…

The galaxy pairwise velocity dispersion (PVD) can provide important tests of non-standard gravity and galaxy formation models. We describe measurements of the PVD of galaxies in the Galaxy and Mass Assembly (GAMA) survey as a function of…

We use a highly complete subset of the GAMA-II redshift sample to fully describe the stellar mass dependence of close-pairs and mergers between 10^8 Msun and 10^12 Msun. Using the analytic form of this fit we investigate the total stellar…

In this work we introduce a new method to perform the identification of groups of galaxies and present results of the identification of galaxy groups in the Seventh Data Release of the Sloan Digital Sky Survey (SDSS-DR7). Our methodology…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-23 J. C. Muñoz-Cuartas , Volker Mueller

We study the star formation rate (SFR), stellar mass ($M_{\star}$) and the gas metallicity (Z) for 4,636 galaxy pairs using the Galaxy And Mass Assembly (GAMA) survey. Our galaxy pairs lie in a redshift range of 0 $<$ $z$ $<$ 0.35, mass…

Astrophysics of Galaxies · Physics 2021-01-20 L. E. Garduño , M. A. Lara-López , O. López-Cruz , A. M. Hopkins , M. S. Owers , K. A. Pimbblet , B. W. Holwerda

We develop a new empirical methodology to study the relation between the stellar mass of galaxies and the mass of their host subhaloes. Our approach is similar to abundance matching, and is based on assigning a stellar mass to each subhalo…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Eyal Neistein , Cheng Li , Sadegh Khochfar , Simone M. Weinmann , Francesco Shankar , Michael Boylan-Kolchin

We study the uncertainty in galaxy cluster mass estimates derived from X-ray data assuming hydrostatic equilibrium (HE) for the intra cluster gas. Using a Monte-Carlo procedure we generate a general class of mass models allowing very…

Astrophysics · Physics 2007-05-23 C. Balland , A. Blanchard

We present the dust mass function (DMF) of 15,750 galaxies with redshift $z< 0.1$, drawn from the overlapping area of the GAMA and {\it H-}ATLAS surveys. The DMF is derived using the density corrected $V_{\rm max}$ method, where we estimate…

Globular clusters (GCs) are often used to estimate the dark matter content of galaxies, especially dwarfs, where other kinematic tracers are lacking. These estimates typically assume spherical symmetry and dynamical equilibrium, assumptions…

Astrophysics of Galaxies · Physics 2021-02-17 Jessica E. Doppel , Laura V. Sales , Julio F. Navarro , Mario G. Abadi , Eric W. Peng , Elisa Toloba

We collected radial velocities of more than 50.000 individual stars in 156 Galactic globular clusters (GGC) and matched them with HST photometry and Gaia DR2 proper motions. This allowed us to derive the GGC's mean proper motions and space…

Astrophysics of Galaxies · Physics 2020-03-18 Michael Hilker , Holger Baumgardt , Antonio Sollima , Andrea Bellini

In this work, I explore an empirically motivated model for investigating the relationship between galaxy stellar masses, star formation rates and their halo masses and mass accretion histories. The core statistical quantity in this model is…

Astrophysics of Galaxies · Physics 2015-07-15 Matthew R. Becker

We use the galaxy stellar mass and halo merger tree information from the semi-analytic model galaxy catalogue of Font et al. (2009) to examine the accretion of galaxies into a large sample of groups and clusters, covering a wide range in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Sean L. McGee , Michael L. Balogh , Richard G. Bower , Andreea S. Font , Ian G. McCarthy