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Related papers: Lyman break galaxies as young spheroids

200 papers

We reassess the hypothesis that Lyman-break galaxies (LBGs) at redshifts z~3 mark the centres of the most massive dark matter haloes at that epoch. First we reanalyse the kinematic measurements of Pettini et al., and of Erb et al., of the…

Astrophysics · Physics 2009-11-10 Stephen J. Weatherley , Stephen J. Warren

We use hydrodynamic cosmological simulations to predict the star formation properties of high-redshift galaxies (z=2-6) in five variants of the inflationary cold dark matter scenario, paying particular attention to z=3, the redshift of the…

Astrophysics · Physics 2009-10-31 David H. Weinberg , Lars Hernquist , Neal Katz

IRAC data have long implied that early ($z\gtrsim6$) galaxies often have very high specific star formation rates (sSFR$\gtrsim$30 Gyr$^{-1}$), but JWST data have shown that at least some early galaxies are forming stars far less vigorously.…

Astrophysics of Galaxies · Physics 2024-10-04 Ryan Endsley , John Chisholm , Daniel P. Stark , Michael W. Topping , Lily Whitler

Long gamma-ray bursts (LGRBs) are typically thought to result from the collapse of massive stars. Nonetheless, recent observations of gamma-ray bursts (GRBs) 211211A and 230307A, coupled with the low-redshift excess of LGRB event rates…

High Energy Astrophysical Phenomena · Physics 2025-05-12 Yan-Kun Qu , Zhong-Xiao Man , Zhi-Bin Zhang

We have discovered six galaxies with spectroscopically confirmed redshifts of 4.8<z<5.8 in a single 44 square arcminute field imaged deeply in R, I and z-bands. All the spectra show an emission-line in the region around 7000-8400 angstroms…

Astrophysics · Physics 2008-11-26 Matthew D. Lehnert , Malcolm Bremer

We constrain the X-ray emission properties of Lyman break galaxies (LBGs) at z ~ 3-6 using the 2 Ms Chandra Deep Field-North and 1 Ms Chandra Deep Field-South. Large samples of LBGs were discovered using HST as part of the Great…

The formation rate of luminous galaxies seems to be roughly constant from z~2 to z~4 from the recent observations of Lyman break galaxies (LBGs) (Steidel et al 1999). The abundance of luminous quasars, on the other hand, appears to drop off…

Astrophysics · Physics 2009-10-31 Renyue Cen

We report preliminary results of a project to homogeneously measure star formation histories for the majority of Local Group dwarf galaxies, based on archival WFPC2 observations. For the dwarf spheroidal and elliptical galaxies, we find…

Astrophysics · Physics 2007-05-23 Andrew E. Dolphin , Daniel R. Weisz , Evan D. Skillman , Jon A. Holtzman

We present observations of the CO[3-2] emission towards two massive and infrared luminous Lyman Break Galaxies at z = 3.21 and z = 2.92, using the IRAM Plateau de Bure Interferometer, placing first constraints on the molecular gas masses…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 G. E. Magdis , E. Daddi , M. Sargent , D. Elbaz , R. Gobat , H. Dannerbauer , Q. Tan , C. Feruglio , D. Rigopoulou , V. Charmandaris , M. Dickinson , N. Reddy , H. Aussel

There are thousands of confirmed detections of star forming galaxies at high redshift (z > 4). These observations rely primarily on the detection of the spectral Lyman Break and the Lyman-alpha emission line. Theoretical modelling of these…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-06 Jaime E. Forero-Romero , Gustavo Yepes , Stefan Gottloeber , Francisco Prada

We report results of deep optical spectroscopy with Subaru/FOCAS for Lyman Break Galaxy (LBG) candidates at z~5. So far, we made spectroscopic observations for 24 LBG candidates among ~200 bright (z'<25.0) LBG sample and confirmed 9 objects…

Astrophysics · Physics 2007-05-23 M. Ando , K. Ohta , I. Iwata , M. Akiyama , K. Aoki , N. Tamura

Star-forming galaxies can exhibit strong morphological differences between the rest-frame far-UV and optical, reflecting inhomogeneities in star-formation and dust attenuation. We exploit deep, high resolution NIRCAM 7-band observations to…

We present the first results of a project, LSD, aimed at obtaining spatially-resolved, near-infrared spectroscopy of a complete sample of Lyman-Break Galaxies at z~3. Deep observations with adaptive optics resulted in the detection of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 F. Mannucci , G. Cresci , R. Maiolino , A. Marconi , G. Pastorini , L. Pozzetti , A. Gnerucci , G. Risaliti , R. Schneider , M. Lehnert , M. Salvati

Luminous compact blue galaxies (LCBGs) are a diverse class of galaxies characterized by high luminosity, blue color, and high surface brightness that sit at the critical juncture of galaxies evolving from the blue to the red sequence. As…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 D. J. Pisano , K. Rabidoux , C. A. Garland , R. Guzman , F. J. Castander , J. Perez-Gallego

We report the discovery of a highly significant concentration of galaxies at a redshift of <z>=3.090. The structure is evident in a redshift histogram of photometrically selected ``Lyman break'' objects in a 9' by 18' field in which we have…

Astrophysics · Physics 2009-10-30 C. Steidel , K. Adelberger , M. Dickinson , M. Giavalisco , M. Pettini , M. Kellogg

We present a study of stellar populations in a sample of spectroscopically-confirmed Lyman-break galaxies (LBGs) and Ly$\alpha$ emitters (LAEs) at $5.7<z<7$. These galaxies have deep optical and infrared images from Subaru, $HST$, and…

We have exploited the large area coverage of the combined UKIDSS Ultra Deep Survey (UDS) and Subaru/XMM-Newton Deep Survey (SXDS) to search for bright Lyman-break galaxies (LBGs) at z >= 5. Using the available optical+near-infrared…

We review recent developments in theoretical studies of galaxy formation and evolution. In combination with new data from HST, Keck and other large telescopes, numerical and semi-analytic modelling is beginning to build up a coherent…

Astrophysics · Physics 2007-05-23 C. S. Frenk , C. M. Baugh , S. Cole , C. G. Lacey

We report on observations of Lyman-break galaxies (LBGs) selected from the Great Observatories Origins Deep Survey at mean redshift z~4, 5 and 6, obtained with FORS2 spectrograph at the ESO-VLT.This program has yielded spectroscopic…