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Based on 58 SLACS strong-lens early-type galaxies with direct total-mass and stellar-velocity dispersion measurements, we find that inside one effective radius massive elliptical galaxies with M_eff >= 3x10^10 M_sun are well-approximated by…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-28 L. V. E. Koopmans , A. Bolton , T. Treu , O. Czoske , M. W. Auger , M. Barnabe , S. Vegetti , R. Gavazzi , L. A. Moustakas , S. Burles

Spectroscopic + photometric redshifts, stellar mass estimates, and rest-frame colors from the 3D-HST survey are combined with structural parameter measurements from CANDELS imaging to determine the galaxy size-mass distribution over the…

We present a systematic analysis of the spatially resolved star formation histories (SFHs) using Hubble Space Telescope imaging data of $\sim 997$, intermediate redshifts $0.5 \leq z \leq 2.0$ galaxies from the GOODS-S field, with stellar…

Astrophysics of Galaxies · Physics 2024-12-04 Shweta Jain , Sandro Tacchella , Moein Mosleh

We present the Fundamental Plane (FP) of field early-type galaxies at 0.5<z<1.0. Our project is a continuation of our efforts to understand the formation and evolution of early-type galaxies in different environments. The target galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Alexander Fritz , Inger Jorgensen , Ricardo P. Schiavon

We report the results of a comprehensive study of the relationship between galaxy size, stellar mass and specific star-formation rate (sSFR) at redshifts 1.3<z<1.5. Based on a mass complete (M_star >= 6x10^10 Msun), spectroscopic sample…

We present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22um and Galaxy Evolution Explorer (GALEX) far-ultraviolet emission. We…

Observational evidence indicates that the role of gas is secondary to that of gravity in the formation of the most luminous spheroids inhabiting the centres of galaxy associations, as originally conjectured in the late 80's/early 90's.…

Astrophysics of Galaxies · Physics 2016-07-27 Jaime D. Perea , José M. Solanes

Two currently debated problems in galaxy evolution, the fundamentally local or global nature of the main sequence of star formation and the evolution of the mass-size relation of star forming galaxies (SFGs), are shown to be intimately…

Astrophysics of Galaxies · Physics 2021-10-13 Gabriele Pezzulli

Using a high resolution hydrodynamical cosmological simulation of the formation of a massive spheroidal galaxy we show that elliptical galaxies can be very compact and massive at high redshift in agreement with recent observations.…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-11 Thorsten Naab , Peter H. Johansson , Jeremiah P. Ostriker

The scaling relation between stellar mass ($M_{*}$) and physical effective radius ($r_{e}$) has been well-studied using wide spectroscopic surveys. However, these surveys suffer from severe surface brightness incompleteness in the dwarf…

Astrophysics of Galaxies · Physics 2021-07-07 Daniel J. Prole

Galaxies grow primarily via accretion-driven star formation in discs and merger-driven growth of bulges. These processes are implicit in semi-analytical models of galaxy formation, with bulge growth in particular relating directly to the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 David J. Wilman , Fabio Fontanot , Gabriella De Lucia , Peter Erwin , Pierluigi Monaco

We investigate galaxy evolution in protoclusters using a semi-analytic model applied to the Millennium Simulation, scaled to a Planck cosmology. We show that the model reproduces the observed behaviour of the star formation history (SFH)…

Astrophysics of Galaxies · Physics 2017-11-15 Stuart I. Muldrew , Nina A. Hatch , Elizabeth A. Cooke

We investigate the cosmic evolution of the absolute and specific star formation rate (SFR, sSFR) of galaxies as derived from a spatially-resolved study of the stellar populations in a set of 366 nearby galaxies from the CALIFA survey. The…

UV observations in the local universe have uncovered a population of early-type galaxies with UV flux consistent with low-level recent or ongoing star formation. We present resolved UV-optical photometry of a sample of 19 SDSS early-type…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-22 Jerome J. Fang , S. M. Faber , Samir Salim , Genevieve J. Graves , R. Michael Rich

Massive quiescent galaxies at high redshift are significantly more compact than their present-day counterparts. We investigate the roles, in determining this evolution, of major and minor mergers, and of the accretion of diffuse envelopes…

Astrophysics of Galaxies · Physics 2025-05-07 Carlo Nipoti

Using data drawn from the DEEP2 and DEEP3 Galaxy Redshift Surveys, we investigate the relationship between the environment and the structure of galaxies residing on the red sequence at intermediate redshift. Within the massive (10 <…

Context: Early-type galaxies (ETGs) are divided into slow and fast rotators (FRs and SRs) according to the degree of ordered rotation of their stellar populations. Cosmological hydrodynamical simulations indicate that galaxies form as FRs…

Astrophysics of Galaxies · Physics 2023-03-29 Michal Bílek , Pierre-Alain Duc , Elisabeth Sola

According to a popular scenario supported by numerical models, the mass assembly and growth of massive galaxies, in particular the Early-Type Galaxies (ETGs), is, below a redshift of 1, mainly due to the accretion of multiple gas--poor…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Pierre-Alain Duc

Compact ellipticals (cEs) are outliers from the scaling relations of early-type galaxies, particularly the mass-metallicity relation which is an important outcome of feedback. The formation of such low-mass, but metal-rich and compact,…

[ABRIDGED] We aim to provide a holistic view on the typical size and kinematic evolution of massive early-type galaxies (ETGs), that encompasses their high-$z$ star-forming progenitors, their high-$z$ quiescent counterparts, and their…

Astrophysics of Galaxies · Physics 2018-05-18 A. Lapi , L. Pantoni , L. Zanisi , J. Shi , C. Mancuso , M. Massardi , F. Shankar , A. Bressan , L. Danese