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First-Year Sloan Digital Sky Survey-II Supernova Results: Hubble Diagram and Cosmological Parameters
We present measurements of the Hubble diagram for 103 Type Ia supernovae (SNe) with redshifts 0.04 < z < 0.42, discovered during the first season (Fall 2005) of the Sloan Digital Sky Survey-IIExpand
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Exploring the Variable Sky with the Sloan Digital Sky Survey
We quantify the variability of faint unresolved optical sources using a catalog based on multiple SDSS imaging observations. The catalog covers SDSS stripe 82, which lies along the celestial equatorExpand
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Narrow associated quasi-stellar object absorbers: clustering, outflows and the line-of-sight proximity effect
Using data from the Sloan Digital Sky Survey data release 3 (SDSS DR3) we investigate how narrow (< 700km/s) C IV and Mg II quasar absorption line systems are distributed around quasars. The C IVExpand
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Distributions of galaxy spectral types in the Sloan Digital Sky Survey
We perform an objective classification of 170,000 galaxy spectra in the Sloan Digital Sky Survey (SDSS) using the Karhunen-Loeve (KL) transform. With about one-sixth of the total set of galaxyExpand
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THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY: THE QUASAR LUMINOSITY FUNCTION FROM DATA RELEASE NINE
We present a new measurement of the optical quasar luminosity function (QLF), using data from the Sloan Digital Sky Survey-III: Baryon Oscillation Spectroscopic Survey (SDSS-III: BOSS). From theExpand
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Probing the extended gaseous regions of M31 with quasar absorption lines
We present HST-COS spectra of ten quasars located behind M31, selected to investigate the properties of gas associated with its extended disk and high velocity clouds (HVCs). The sightlines haveExpand
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Eruption ages and magma supply rates during the miocene evolution of Gran Canaria
the estimation by some workers [5], the age of Copernicus is 0 . 8 1.5 x 109a. The K-Ar age of some Apol lo 12 samples gave an age of about 0.8 x 109a, which was interpreted as the age of CopernicusExpand
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Quasars with P v broad absorption in BOSS data release 9
Broad absorption lines (BALs) found in a significant fraction of quasar spectra identify high‐velocity outflows that might be present in all quasars and could be a major factor in feedback to galaxyExpand
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The Astronomy Revolution : 400 Years of Exploring the Cosmos
Introduction: The New Vision 400 Project Creativity and Technology in Astronomical Discovery From the Language of Heaven to the Rationale of Matter Tsung-Dao Lee The Impact of Modern TelescopeExpand
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The dark matter haloes and host galaxies of Mg II absorbers at z~ 1
Strong foreground absorption features from singly ionized magnesium (Mg II) are commonly observed in the spectra of quasars and are presumed to probe a wide range of galactic environments. To date,Expand
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