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Related papers: High-redshift elliptical galaxies: are they (all) …

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We report on the evolution of the number density and size of early-type galaxies from z~2 to z~0. We select a sample of 563 massive (M>10^{10} Msun), passively evolving (SSFR<10^{-2} Gyr^{-1}) and morphologically spheroidal galaxies at…

Dedicated photometric and spectroscopic surveys have provided unambiguous evidence for a strong stellar mass-size evolution of galaxies within the last 10 Gyr. The likely progenitors of today's most massive galaxies are remarkably small,…

It has been widely remarked that compact, massive, elliptical-like galaxies are abundant at high redshifts but exceedingly rare in the Universe today, implying significant evolution such that their sizes at z ~ 2+/-0.6 have increased by…

Astrophysics of Galaxies · Physics 2015-06-24 Alister W. Graham , Bililign T. Dullo , Giulia A. D. Savorgnan

A substantial population of high redshift early-type galaxies is detected in very deep UBVRIJHK images towards the HDF-South. Four elliptical profile galaxies are identified in the redshift range z=1-2, all with very red SEDs, implying ages…

Astrophysics · Physics 2009-10-31 Narciso Benitez , Tom Broadhurst , Rychard Bouwens , Joseph Silk , Piero Rosati

Recent studies have shown that massive quiescent galaxies at high redshift are much more compact than present-day galaxies of the same mass. Here we compare the radial stellar density profiles and the number density of a sample of massive…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-15 Rachel Bezanson , Pieter G. van Dokkum , Tomer Tal , Danilo Marchesini , Mariska Kriek , Marijn Franx , Paolo Coppi

Recent deep Hubble Space Telescope WFC3 imaging suggests that a majority of compact quiescent massive galaxies at z~2 may contain disks. To investigate this claim, we have compared the ellipticity distribution of 31 carefully selected…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 M. Chevance , A. Weijmans , I. Damjanov , R. G. Abraham , L. Simard , S. van den Bergh , E. Caris , K. Glazebrook

The optical rest-frame sizes of 10 of the most massive (~5x10^{11}h_{70}^{-2}M_sun) galaxies found in the near-infrared MUNICS survey at 1.2<z<1.7 are analysed. Sizes were estimated both in the J and K' filters. These massive galaxies are…

From a search of a portion of the sky covered by the SDSS and UKIDSS databases, we have located 2 galaxies at z~0.5 that have properties similar to those of the luminous passive compact galaxies found at z~2.5. From Keck moderate-resolution…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Alan Stockton , Hsin-Yi Shih , Kirsten Larson

Quiescent massive galaxies at z~2 are thought to be the progenitors of present-day massive ellipticals. Observations revealed them to be extraordinarily compact. The determination of stellar ages, star formation rates and dust properties…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Stefan Geier , Johan Richard , Allison Man , Thomas Krühler , Sune Toft , Danilo Marchesini , Johan Fynbo

We combined proprietary and archival HST observations to collect a sample of 62 early-type galaxies (ETGs) at 0.9<z<2 with spectroscopic confirmation of their redshift and spectral type. The whole sample is covered by ACS or NICMOS…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 P. Saracco , M. Longhetti , A. Gargiulo

The aim of our analysis is twofold. On the one hand we are interested in addressing whether a sample of ETGs morphologically selected differs from a sample of passive galaxies in terms of galaxy statistics. On the other hand we study how…

Astrophysics of Galaxies · Physics 2014-11-05 S. Tamburri , P. Saracco , M. Longhetti , A. Gargiulo , I. Lonoce , F. Ciocca

We report on a complete sample of 7 luminous early-type galaxies in the Hubble Ultra Deep Field (UDF) with spectroscopic redshifts between 1.39 and 2.47 and to K<23 AB. Using the BzK selection criterion we have pre-selected a set of objects…

In a systematic search over 11 cluster fields from Cluster Lensing And Supernova survey with Hubble (CLASH) we identify ten passively evolving massive galaxies at redshift z~2.We derive the stellar properties of these galaxies using HST…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Lulu Fan , Yang Chen , Xinzhong Er , Jinrong Li , Lin Lin , Xu Kong

We present near-IR images, obtained with the Hubble Space Telescope (HST) and the WFC3/IR camera, of six passive and massive galaxies at redshift 1.3<z<2.4 (SSFR<10^{-2} Gyr^{-1}; stellar mass M~10^{11} M_{sun}), selected from the Great…

[abridged] Massive, passively evolving galaxies at redshifts z>1 exhibit on the average physical sizes smaller by factors ~3 than local early type galaxies (ETGs) endowed with the same stellar mass. Small sizes are in fact expected on…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 L. Fan , A. Lapi , A. Bressan , M. Bernardi , G. De Zotti , L. Danese

We measure and analyse the sizes of 82 massive (M >= 10^11 M_Sun) galaxies at 1.7<z<3 utilizing deep HST NICMOS data taken in the GOODS North and South fields. Our sample provides the first statistical study of massive galaxy sizes at z>2.…

Astrophysics · Physics 2008-11-19 Fernando Buitrago , Ignacio Trujillo , Christopher J. Conselice

We set out to quantify the number density of quiescent massive compact galaxies at intermediate redshifts. We determine structural parameters based on i-band imaging using the CFHT equatorial SDSS Stripe 82 (CS82) survey (~170 sq. degrees)…

We study the evolution of the number density, as a function of the size, of passive early-type galaxies with a wide range of stellar masses 10^10<M*/Msun<10^11.5) from z~3 to z~1, exploiting the unique dataset available in the GOODS-South…

We present a thorough characterization of a large sample of 183 extreme emission-line galaxies (EELGs) at redshift 0.11 < z < 0.93 selected from the 20k zCOSMOS Bright Survey because of their unusually large emission line equivalent widths.…

Massive early-type galaxies have undergone dramatic structural evolution over the last 10 Gyr. A companion paper shows that nearby elliptical galaxies with M*>1.3x10^{11} M_sun generically contain three photometric subcomponents: a compact…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-23 Song Huang , Luis C. Ho , Chien Y. Peng , Zhao-Yu Li , Aaron J. Barth
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