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相关论文: UVUDF: UV Luminosity Functions at the cosmic high-…

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We calculate the local UV flux density in the GALEX MIS FUV and NUV bands using redshifts provided by SDSS DR7. Luminosity functions are calculated for the overlapping MIS and SDSS sample, allowing flux densities to be measured and the…

宇宙学与河外天体物理 · 物理学 2015-05-27 Aaron S. G. Robotham , Simon P. Driver

We present the 1.4GHz radio luminosity functions (RLFs) of galaxies in the COSMOS field, measured above and below the $5\sigma$ detection threshold, using a Bayesian model-fitting technique. The radio flux-densities from VLA-COSMOS 3-GHz…

We present ultraviolet integrated and azimuthally-averaged surface photometric properties of a sample of 44 dIm, BCD, and Sm galaxies measured from archival NUV and FUV images obtained with GALEX. We compare the UV to Halpha and V-band…

宇宙学与河外天体物理 · 物理学 2015-05-14 Deidre A. Hunter , Bruce G. Elmegreen , Bonnie C. Ludka

We present a joint analysis of the rest-frame ultraviolet (UV) luminosity functions of continuum-selected star-forming galaxies and galaxies dominated by active galactic nuclei (AGNs) at $z \sim$ 4. These 3,740 $z \sim$ 4 galaxies are…

We report the results of J-band infrared spectroscopy of a sample of 13 z=1 field galaxies drawn from the Canada-France Redshift Survey, targeting galaxies whose redshifts place the rest frame H-alpha line emission from HII regions in…

天体物理学 · 物理学 2009-10-30 Karl Glazebrook , Chris Blake , Frossie Economou , Simon Lilly , Matthew Colless

Multi-wavelength, optical to IR/sub-mm observations of 5 strongly lensed galaxies identified by the Herschel Lensing Survey, plus two well-studied lensed galaxies, MS1512-cB58 and the Cosmic Eye, for which we also provide updated Herschel…

The FIR(60 microns) and UV (0.2 microns) emissions of individual star forming galaxies are compared to the mean properties of the local Universe. Almost all the galaxies exhibit a FIR to UV flux ratio larger than the ratio of the FIR and UV…

天体物理学 · 物理学 2007-05-23 V. Buat , D. Burgarella

We have detected 506 i-dropouts (z~6 galaxies) in deep, wide-area HST ACS fields: HUDF, enhanced GOODS, and HUDF-Parallel ACS fields (HUDF-Ps). The contamination levels are <=8% (i.e., >=92% are at z~6). With these samples, we present the…

天体物理学 · 物理学 2009-11-11 R. J. Bouwens , G. D. Illingworth , J. P. Blakeslee , M. Franx

We present DEIMOS spectroscopic observations of the most UV-luminous star-forming galaxies at 3.2<z<4.6. Our sample contains galaxies with luminosities of L*<L<7L* and is one of the largest samples to date of the most UV-luminous galaxies…

宇宙学与河外天体物理 · 物理学 2015-06-12 Kyoung-Soo Lee , Arjun Dey , Michael C. Cooper , Naveen Reddy , Buell T. Jannuzi

We present new determinations of the rest-UV luminosity functions (LFs) at z=2-9 to extremely low luminosities (>-14 mag) from a sample of >2500 lensed galaxies found behind the HFF clusters. For the first time, we present faint-end slope…

星系天体物理 · 物理学 2023-04-04 R. J. Bouwens , G. D. Illingworth , R. S. Ellis , P. A. Oesch , M. Stefanon

We present an analysis of all prime HST legacy fields spanning >800 arcmin^2 for the search of z~10 galaxy candidates and the study of their UV luminosity function (LF). In particular, we present new z~10 candidates selected from the full…

星系天体物理 · 物理学 2018-03-28 P. A. Oesch , R. J. Bouwens , G. D. Illingworth , I. Labbe , M. Stefanon

Recent observations of high redshift galaxies by the James Webb Space Telescope suggest the presence of a bright population of galaxies that is more abundant than predicted by most galaxy formation models. These observations have led to a…

宇宙学与河外天体物理 · 物理学 2025-12-12 Mattéo Blamart , Adrian Liu , Robert Brandenberger , Julian B. Muñoz , Bryce Cyr

We present new z~8 galaxy candidates from a search over ~95 arcmin^2 of WFC3/IR data, tripling the previous search area for bright z~8 galaxies. Our analysis uses newly acquired WFC3/IR imaging data from the CANDELS Multi-Cycle Treasury…

宇宙学与河外天体物理 · 物理学 2012-11-06 P. A. Oesch , R. J. Bouwens , G. D. Illingworth , V. Gonzalez , M. Trenti , P. G. van Dokkum , M. Franx , I. Labbe , C. M. Carollo , D. Magee

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 review the spectral properties of the population of star forming galaxies at z = 3 discovered using a colour selection technique which targets the Lyman discontinuity at 912 Angstroms. The UV luminosity of the typical z = 3 galaxy…

The ratio between far-ultraviolet (FUV) and infrared (IR) luminosity densities from z=0 to z=1 is discussed by using the luminosity functions (LFs) of both wavelengths. The FUV LF (z=0-1) based on GALEX has been reported by Arnouts et al.…

天体物理学 · 物理学 2009-11-11 Tsutomu T. Takeuchi , Veronique Buat , Denis Burgarella

We present the first study of GALEX far ultra-violet (FUV) luminosity functions of individual star-forming regions within a sample of 258 nearby galaxies spanning a large range in total stellar mass and star formation properties. We…

星系天体物理 · 物理学 2016-08-17 David O. Cook , Daniel A. Dale , Janice C. Lee , David Thilker , Daniela Calzetti , Robert C. Kennicutt

We investigate the high-redshift evolution of the restframe UV-luminosity function (LF) of galaxies via hydrodynamical cosmological simulations, coupled with an emulated observational astronomy pipeline that provides a direct comparison…

星系天体物理 · 物理学 2015-10-14 Robert J. Morgan , Rogier A. Windhorst , Evan Scannapieco , Robert J. Thacker

We conduct a first comprehensive study of the Luminosity Function (LF) using a non-parametric approach. We use Gaussian Process to fit available luminosity data between redshifts $z \sim 2-8$. Our free-form LF in the non-parametric approach…

星系天体物理 · 物理学 2024-12-24 Debabrata Adak , Dhiraj Kumar Hazra , Sourav Mitra , Aditi Krishak

We discuss the dust attenuation and the star formation rates in the nearby universe obtained from a comparison of far-infrared (IRAS) and ultraviolet (GALEX) observations. The ratio of the dust to UV flux ratio is used to derive the dust…

天体物理学 · 物理学 2009-11-10 V. Buat