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The acquisition of deep Near-IR imaging with Wide Field Camera 3 on the Hubble Space Telescope has provided the opportunity to study the very-high redshift Universe. For galaxies up to $z\approx 7.7$ sufficient wavelength coverage exists to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Stephen M. Wilkins , Andrew J. Bunker , Elizabeth Stanway , Silvio Lorenzoni , Joseph Caruana

The number density and correlation function of galaxies are two key quantities to characterize the distribution of the observed galaxy population. High-$z$ spectroscopic surveys, which usually involve complex target selection and are…

Astrophysics of Galaxies · Physics 2024-02-05 Jiacheng Meng , Cheng Li , Houjun Mo , Yangyao Chen , Kai Wang

This paper describes the first catalogue of photometrically-derived stellar mass estimates for intermediate-redshift (z < 0.65) galaxies in the Galaxy And Mass Assembly (GAMA) spectroscopic redshift survey. These masses, as well as the full…

We study the relationships between galaxy total luminosity (M_g), morphology, color and environment as a function of redshift. We use a magnitude-limited sample of 65,624 galaxies in the redshift range 0<z<1.3 taken from one of the…

Astrophysics · Physics 2016-08-16 Martijn Nuijten , Luc simard , Stephen Gwyn , Huub Röttgering

We report the discovery of a population of nearby, blue early-type galaxies with high star formation rates (0.5 < SFR < 50 Msun/yr). They are identified by their visual morphology as provided by Galaxy Zoo for SDSS DR6 and their u-r colour.…

We analyse a z<0.1 galaxy sample from the Sloan Digital Sky Survey focusing on the variation of the galaxy colour bimodality with stellar mass and projected neighbour density Sigma, and on measurements of the galaxy stellar mass functions.…

We use subhalo abundance and age distribution matching to create magnitude-limited mock galaxy catalogs at $z\sim0.43$, $0.52$, and $0.63$ with $z$-band and $3.4$ micron $W1$-band absolute magnitudes and ${r-z}$ and ${r-W1}$ colors. From…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-26 Angela M. Berti , Kyle S. Dawson , Wilber Dominguez

We report on the method developed by Zibetti, Charlot and Rix (2009) to construct resolved stellar mass maps of galaxies from optical and NIR imaging. Accurate pixel-by-pixel colour information (specifically g-i and i-H) is converted into…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Stefano Zibetti , Stephane Charlot , Hans-Walter Rix

Galaxy populations are known to exhibit a strong colour bimodality, corresponding to blue star-forming and red quiescent subpopulations. The relative abundance of the two populations has been found to vary with stellar mass and environment.…

We present the rest-frame optical and infrared colours of a complete sample of 1114 z<0.3 galaxies from the Spitzer Wide-area InfraRed Extragalactic Legacy Survey (SWIRE) and the Sloan Digital Sky Survey (SDSS). We discuss the optical and…

We select 25,000 galaxies from the NEWFIRM Medium Band Survey (NMBS) to study the rest-frame U-V color distribution of galaxies at 0 < z < 2.5. The five unique NIR filters of the NMBS enable the precise measurement of photometric redshifts…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 G. B. Brammer , K. E. Whitaker , P. G. van Dokkum , D. Marchesini , I. Labbe , M. Franx , M. Kriek , R. F. Quadri , G. Illingworth , K. -S. Lee , A. Muzzin , G. Rudnick

We present a morphological study of galaxies in the A901/902 supercluster from the COMBO-17 survey. A total of 570 galaxies with photometric redshifts in the range 0.155 < z_phot < 0.185 are visually classified by three independent…

Astrophysics · Physics 2009-06-23 K. P. Lane , M. E. Gray , A. Aragon-Salamanca , C. Wolf , K. Meisenheimer

We present a photometric investigation into recent star formation in galaxy clusters at z ~ 0.1. We use spectral energy distribution templates to quantify recent star formation in large X-ray selected clusters from the LARCS survey using…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Jacob P. Crossett , Kevin A. Pimbblet , John P. Stott , D. Heath Jones

We analyze the morphological properties of a large sample of 1503 70 micron selected galaxies in the COSMOS field spanning the redshift range 0.01<z< 3.5 with a median redshift of 0.5 and an infrared luminosity range of 10^8<L_IR<10^14L_sun…

The correlation between a galaxy's morphology and its observed optical spectrum is investigated. As an example, 4000 galaxies from the 2dF Galaxy Redshift Survey, which possess both good quality spectra and have visually determined…

Astrophysics · Physics 2009-11-07 Darren S. Madgwick

(Abridged) We present a non-parametric cell-based method of selecting highly pure and largely complete samples of spiral galaxies using photometric and structural parameters as provided by standard photometric pipelines and simple shape…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 M. W. Grootes , R. J. Tuffs , C. C. Popescu , A. S. G. Robotham , M. Seibert , L. S. Kelvin

The interpretation that bimodal colour distributions of globular clusters (GCs) reflect bimodal metallicity distributions has been challenged. Non-linearities in the colour to metallicity conversions caused by the horizontal branch (HB)…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 A. L. Chies-Santos , S. S. Larsen , M. Cantiello , J. Strader , H. Kuntschner , E. M. Wehner , J. P. Brodie

We present measurements of the angular correlation function of galaxies selected from a B_J=23.5 multicolour survey of two 5 degree by 5 degree fields located at high galactic latitudes. The galaxy catalogue of approximately 400,000…

Astrophysics · Physics 2009-10-31 M. J. I. Brown , R. L. Webster , B. J. Boyle

We have obtained integrated spectra and multi-filter photometry for a repre- sentative sample of ~200 nearby galaxies. These galaxies span the entire Hubble sequence in morphological type, as well as a wide range of luminosities (M_B = -14…

Astrophysics · Physics 2008-11-26 R. A. Jansen , M. Franx , D. Fabricant , N. Caldwell

Using the Hyperz code and a template spectral library which consists of 4 observed galaxy spectra from Coleman, Wu & Weedman (CWW, 1980) and 8 spectral families built with evolutionary population synthesis models, we present photometric…

Solar and Stellar Astrophysics · Physics 2015-05-19 F. Zhang , Z. Han , L. Li , H. Shan , Y. Zhang