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We present a new spectrum extraction technique which employs optimal weights for the spectral extraction, deblends the overlapping spectra, determines the precise sky background, and takes into account correlations between errors correctly…

Astrophysics · Physics 2007-05-23 Hsiao-Wen Chen , Kenneth M. Lanzetta , Sebastian Pascarelle

Context. Lyman Break Galaxies (LBG) and Narrow Band (NB) surveys have been successful at detecting large samples of high-redshift galaxies. Both methods are subject to contamination from low-redshift interlopers. Aims. In this paper, our…

We have used the HST/ACS images to identify 4700 Lyman break galaxies (LBGs) in GOODS. We present the results from a parametric analysis of the 2-D surface brightness profiles, for 1333 LBGs at z > 2.5 with rest-frame UV(1600 Angstrom) AB…

We measure the clustering of Lyman Alpha Emitting galaxies (LAEs) selected from the One-hundred-square-degree DECam Imaging in Narrowbands (ODIN) survey, with spectroscopic follow-up from Dark Energy Spectroscopic Instrument (DESI). We use…

We report the first detection of the dark matter distribution around Lyman break galaxies (LBGs) at high redshift through the Cosmic Microwave Background (CMB) lensing measurements with the public {\it Planck} PR3 $\kappa$ map. The LBG…

The multiplexing capability of slitless spectroscopy is a powerful asset in creating large spectroscopic datasets, but issues such as spectral confusion make the interpretation of the data challenging. Here we present a new method to search…

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

We describe the algorithm used to select the Emission Line Galaxy (ELG) sample at $z \sim 0.85$ for the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digital Sky Survey IV, using photometric data from the DECam Legacy…

We present a statistical detection of 1.5 GHz radio continuum emission from a sample of faint z~4 Lyman-break galaxies (LBGs). LBGs are key tracers of the high-redshift star formation history and important sources of UV photons that ionized…

Astrophysics of Galaxies · Physics 2015-06-19 Chun-Hao To , Wei-Hao Wang , Frazer N. Owen

Lyman alpha blobs - luminous, spatially extended emission-line nebulae, often lacking bright continuum counterparts - are common in dense environments at high redshift. Until recently, atmospheric absorption and filter technology have…

Astrophysics of Galaxies · Physics 2015-05-13 William C. Keel , Raymond E. White III. , Scott Chapman , Rogier A. Windhorst

Using deep Keck spectroscopy of Lyman break galaxies selected from infrared imaging data taken with WFC3/IR onboard the Hubble Space Telescope, we present new evidence for a reversal in the redshift-dependent fraction of star forming…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 M. A. Schenker , D. P Stark , R. S. Ellis , B. E. Robertson , J. S. Dunlop , R. J. McLure , J. -P. Kneib , J. Richard

Using semi-analytic models of galaxy formation, we investigate the properties of $z\sim3$ galaxies and compare them with the observed population of Lyman-break galaxies (LBGs). In addition to the usual quiescent mode of star formation, we…

Astrophysics · Physics 2009-10-30 Joel R. Primack , Rachel S. Somerville , S. M Faber , Risa H. Wechsler

We present complimentary techniques to find emission-line targets and measure their properties in a semi-automated fashion from grism observations obtained with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The first…

The steep source counts and negative K-corrections of bright submillimetre galaxies (SMGs) suggest that a significant fraction of those observed at high flux densities may be gravitationally lensed, and that the lensing objects may often…

Astrophysics · Physics 2015-05-13 Gregory Paciga , Douglas Scott , Edward L. Chapin

Detection of Lyman-Break Galaxies (LBGs) at high-redshift can be affected by gravitational lensing induced by foreground deflectors not only in galaxy clusters, but also in blank fields. We quantify the impact of strong magnification in the…

Astrophysics of Galaxies · Physics 2015-06-23 R. L. Barone-Nugent , J. S. B Wyithe , M. Trenti , T. Treu , P. Oesch , R. Bouwens , G. D. Illingworth , K. B. Schmidt

As Lyman-alpha photons are scattered by neutral hydrogen, a change with redshift in the Lyman-alpha equivalent width distribution of distant galaxies offers a promising probe of the degree of ionization in the intergalactic medium and hence…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Daniel P. Stark , Richard S. Ellis , Masami Ouchi

The Lyman-break technique has been used to successfully identify high-redshift candidates in broad-band photometric data in the rest-frame optical and NIR using the dropout technique. We pioneer the application of this technique to new…

Astrophysics of Galaxies · Physics 2025-04-01 C. Lovell , M. Lee , A. Vijayan , T. Harvey , L. Sommovigo , A. Long , E. Lambrides , W. Roper , S. Wilkins , D. Narayanan , N. Adams , D. Austin , M. Maltz

Lyman Break Galaxies (LBGs) are widely thought to be prototypical young galaxies in the early universe, particularly representative of those undergoing massive events of star formation. Therefore, LBGs should produce significant amounts of…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-17 Peter-Christian Zinn , Stefan Blex , Nicholas Seymour , Dominik J. Bomans

We present first insights into the far-IR properties for a sample of IRAC and MIPS-24um detected Lyman Break Galaxies (LBGs) at z ~ 3, as derived from observations in the northern field of the Great Observatories Origins Survey (GOODS-N)…