English
Related papers

Related papers: The Galaxy UV Luminosity Function Before the Epoch…

200 papers

JWST observations have revealed a population of galaxies bright enough that potentially challenge standard galaxy formation models in the $\Lambda$CDM cosmology. Using a minimal empirical framework, we investigate the influence of…

Astrophysics of Galaxies · Physics 2023-08-30 Xuejian Shen , Mark Vogelsberger , Michael Boylan-Kolchin , Sandro Tacchella , Rahul Kannan

The high-redshift galaxy UV luminosity function (UVLF) has become essential for understanding the formation and evolution of the first galaxies. Yet, UVLFs only measure galaxy abundances, giving rise to a degeneracy between the mean galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-22 Julian B. Muñoz , Jordan Mirocha , Steven Furlanetto , Nashwan Sabti

We present Swift Ultraviolet Optical Telescope (UVOT) observations of the deep field GOODS-N in four near-UV filters. A catalog of detected galaxies is reported, which will be used to explore galaxy evolution using ultraviolet emission.…

Astrophysics of Galaxies · Physics 2024-12-20 Alexander Belles , Caryl Gronwall , Michael H. Siegel , Robin Ciardullo , Mat J. Page

We determine the abundance of i'-band drop-outs in the HST/ACS GOODS surveys and the Hubble Ultra Deep Field (UDF). The majority of these sources are likely to be z~6 galaxies whose flux decrement arises from Lyman-alpha absorption. We have…

The shape of the faint-end of the high-z galaxy luminosity function (LF) informs early star formation and reionization physics during the Cosmic Dawn and Epoch of Reionization. Until recently, based on the strong gravitational lensing…

Astrophysics of Galaxies · Physics 2022-09-14 Zekang Zhang , Huanyuan Shan , Junhua Gu , Qian Zheng , Yidong Xu , Bin Yue , Yuchen Liu , Zhenghao Zhu , Quan Guo

Connecting the observed rest-ultraviolet (UV) luminosities of high-$z$ galaxies to their intrinsic luminosities (and thus star formation rates) requires correcting for the presence of dust. We bypass a common dust-correction approach that…

Astrophysics of Galaxies · Physics 2020-09-02 Jordan Mirocha , Charlotte Mason , Daniel P. Stark

We combine recent estimates of dust extinction at z~4-7 with UV luminosity function (LF) determinations to derive star formation rate (SFR) functions at z~4, 5, 6 and 7. SFR functions provide a more physical description of galaxy build-up…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Renske Smit , Rychard J. Bouwens , Marijn Franx , Garth D. Illingworth , Ivo Labbé , Pacal A. Oesch , Pieter G. van Dokkum

We examine the impact of using photometric redshifts for studying the evolution of both the global galaxy luminosity function (LF) and that for different galaxy types. To this end we compare LFs obtained using photometric redshifts from the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 B. H. F. Ramos , P. S. Pellegrini , C. Benoist , L. N. da Costa , M. A. G. Maia , M. Makler , R. L. C. Ogando , F. de Simoni , A. A. Mesquita

We present the first determination of the galaxy luminosity function (LF) at z~4, 5, 6 and 7 in the rest-frame optical at lambda_rest~900 nm (z' band). The rest-frame optical light traces the content in low-mass evolved stars (~stellar mass…

Astrophysics of Galaxies · Physics 2017-07-05 Mauro Stefanon , Rychard J. Bouwens , Ivo Labbé , Adam Muzzin , Danilo Marchesini , Pascal Oesch , Valentino Gonzalez

We compare model results from a semi-analytic (merger-tree based) framework for high-redshift (z ~ 5-20) galaxy formation against reionization indicators, including the Planck electron scattering optical depth and the ionizing photon…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-22 Pratika Dayal , Tirthankar Roy Choudhury , Volker Bromm , Fabio Pacucci

The largest galaxies acquire their mass early on, when the Universe is still youthful. Cold streams violently feed these young galaxies a vast amount of fresh gas, resulting in very efficient star formation. Using a well resolved…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 J. Devriendt , C. Rimes , C. Pichon , R. Teyssier , D. Le Borgne , D. Aubert , E. Audit , S. Colombi , S Courty , Y. Dubois , S. Prunet , Y. Rasera , A. Slyz , D. Tweed

We use state-of-art measurements of the galaxy luminosity function (LF) at z=6, 7 and 8 to derive constraints on warm dark matter (WDM), late-forming dark matter (LFDM) and ultra-light axion dark matter (ULADM) models alternative to the…

Cosmology and Nongalactic Astrophysics · Physics 2017-04-17 P. S. Corasaniti , S. Agarwal , D. J. E. Marsh , S. Das

We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies…

Astrophysics · Physics 2009-11-10 Jon Loveday

The rest-frame UV emission from massive stars contains a wealth of information about the physical nature and conditions of star formation in galaxies. Using studies of the rest-frame UV, the past decade has witnessed the beginning of…

Here we provide the most comprehensive determinations of the rest-frame $UV$ LF available to date with HST at z~2, 3, 4, 5, 6, 7, 8, and 9. Essentially all of the non-cluster extragalactic legacy fields are utilized, including the Hubble…

Astrophysics of Galaxies · Physics 2021-07-14 R. J. Bouwens , P. A. Oesch , M. Stefanon , G. Illingworth , I. Labbe , N. Reddy , H. Atek , M. Montes , R. Naidu , T. Nanayakkara , E. Nelson , S. Wilkins

We utilize deep near-infrared survey data from the UltraVISTA fourth data release (DR4) and the VIDEO survey, in combination with overlapping optical and Spitzer data, to search for bright star-forming galaxies at $z \gtrsim 7.5$. Using a…

We report the updated UV luminosity function (LF) of Lyman break galaxies (LBGs) at z~5. Combining with lower redshift data, we found that the evolution of UV LF is differential depending on the UV luminosity; i.e., the number density of…

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

We use new studies of the cosmic evolution of star-forming galaxies to estimate the production rate of ionizing photons from hot, massive stars at low and intermediate redshifts. The luminosity function of blue galaxies in the Canada-France…

Astrophysics · Physics 2015-06-24 E. Giallongo , A. Fontana , P. Madau

The evolution in the comoving space density of the global average galaxy star formation rate (SFR) out to a redshift around unity is well established. Beyond z~1 there is growing evidence that this evolution is flat or even increasing,…

Astrophysics · Physics 2008-11-26 A. M. Hopkins