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The Data Release of the Sloan Digital Sky Survey-II Supernova Survey  [PDF]
Masao Sako,Bruce Bassett,Andrew C. Becker,Peter J. Brown,Heather Campbell,Rachel Cane,David Cinabro,Chris B. D'Andrea,Kyle S. Dawson,Fritz DeJongh,Darren L. Depoy,Ben Dilday,Mamoru Doi,Alexei V. Filippenko,John A. Fischer,Ryan J. Foley,Joshua A. Frieman,Lluis Galbany,Peter M. Garnavich,Ariel Goobar,Ravi R. Gupta,Gary J. Hill,Brian T. Hayden,Renee Hlozek,Jon A. Holtzman,Ulrich Hopp,Saurabh W. Jha,Richard Kessler,Wolfram Kollatschny,Giorgos Leloudas,John Marriner,Jennifer L. Marshall,Ramon Miquel,Tomoki Morokuma,Jennifer Mosher,Robert C. Nichol,Jakob Nordin,Matthew D. Olmstead,Linda Ostman,Jose L. Prieto,Michael Richmond,Roger W. Romani,Jesper Sollerman,Max Stritzinger,Donald P. Schneider,Mathew Smith,J. Craig Wheeler,Naoki Yasuda,Chen Zheng
Physics , 2014,
Abstract: This paper describes the data release of the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey conducted between 2005 and 2007. Light curves, spectra, classifications, and ancillary data are presented for 10,258 variable and transient sources discovered through repeat ugriz imaging of SDSS Stripe 82, a 300 deg2 area along the celestial equator. This data release is comprised of all transient sources brighter than r~22.5 mag with no history of variability prior to 2004. Dedicated spectroscopic observations were performed on a subset of 889 transients, as well as spectra for thousands of transient host galaxies using the SDSS-III BOSS spectrographs. Photometric classifications are provided for the candidates with good multi-color light curves that were not observed spectroscopically. From these observations, 4607 transients are either spectroscopically confirmed, or likely to be, supernovae, making this the largest sample of supernova candidates ever compiled. We present a new method for SN host-galaxy identification and derive host-galaxy properties including stellar masses, star-formation rates, and the average stellar population ages from our SDSS multi-band photometry. We derive SALT2 distance moduli for a total of 1443 SN Ia with spectroscopic redshifts as well as photometric redshifts for a further 677 purely-photometric SN Ia candidates. Using the spectroscopically confirmed subset of the three-year SDSS-II SN Ia sample and assuming a flat Lambda-CDM cosmology, we determine Omega_M = 0.315 +/- 0.093 (statistical error only) and detect a non-zero cosmological constant at 5.7 sigmas.
Magnetic white dwarfs in the Early Data Release of the Sloan Digital Sky Survey  [PDF]
B. T. Gaensicke,F. Euchner,S. Jordan
Physics , 2002, DOI: 10.1051/0004-6361:20021225
Abstract: We have identified 7 new magnetic DA white dwarfs in the Early Data Release of the Sloan Digital Sky Survey. Our selection strategy has also recovered all the previously known magnetic white dwarfs contained in the SDSS EDR, KUV03292+0035 and HE0330-0002. Analysing the SDSS fibre spectroscopy of the magnetic DA white dwarfs with our state-of-the-art model spectra, we find dipole field strengths 1.5<=B_d<=63MG and effective temperatures 8500<=Teff<=39000K. As a conservative estimate, we expect that the complete SDSS will increase the number of known magnetic white dwarfs by a factor 3.
The Sloan Digital Sky Survey Quasar Catalog I. Early Data Release  [PDF]
Donald P. Schneider,Gordon T. Richards,Xiaohui Fan,Patrick B. Hall,Michael A. Strauss,Daniel E. Vanden Berk,James E. Gunn,Heidi Jo Newberg,Timothy A. Reichard,C. Stoughton,Wolfgang Voges,Brian Yanny
Physics , 2001, DOI: 10.1086/338434
Abstract: We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects (3000 discovered by the SDSS) in the initial SDSS public data release that have at least one emission line with a full width at half maximum larger than 1000 km/s, luminosities brighter than M_i^* = -23, and highly reliable redshifts. The area covered by the catalog is 494 square degrees; the majority of the objects were found in SDSS commissioning data using a multicolor selection technique. The quasar redshifts range from 0.15 to 5.03. For each object the catalog presents positions accurate to better than 0.2" rms per coordinate, five band (ugriz) CCD-based photometry with typical accuracy of 0.05 mag, radio and X-ray emission properties, and information on the morphology and selection method. Calibrated spectra of all objects in the catalog, covering the wavelength region 3800 to 9200 Angstroms at a spectral resolution of 1800-2100, are also available. Since the quasars were selected during the commissioning period, a time when the quasar selection algorithm was undergoing frequent revisions, the sample is not homogeneous and is not intended for statistical analysis.
Cosmic Voids in Sloan Digital Sky Survey Data Release 7  [PDF]
Danny C. Pan,Michael S. Vogeley,Fiona Hoyle,Yun-Young Choi,Changbom Park
Physics , 2011, DOI: 10.1111/j.1365-2966.2011.20197.x
Abstract: We study the distribution of cosmic voids and void galaxies using Sloan Digital Sky Survey Data Release 7 (SDSS DR7). Using the VoidFinder algorithm as described by Hoyle 2002, we identify 1054 statistically significant voids in the northern galactic hemisphere with radii > 10 h^{-1} Mpc. The filling factor of voids in the sample volume is 62%. The largest void is just over 30 h^{-1} Mpc in effective radius. The median effective radius is 17 h^{-1} Mpc. The voids are found to be significantly underdense, with density contrast \delta < -0.85 at the edges of the voids. The radial density profiles of these voids are similar to predictions of dynamically distinct underdensities in gravitational theory. We find 8,046 galaxies brighter than M_r = -20.09 within the voids, accounting for 7% of the galaxies. We compare the results of VoidFinder on SDSS DR7 to mock catalogs generated from a SPH halo model simulation as well as other \Lambda -CDM simulations and find similar void fractions and void sizes in the data and simulations. This catalog is made publicly available at http://www.physics.drexel.edu/~pan/voidcatalog.html for download.
The Sloan Digital Sky Survey quasar catalog: tenth data release  [PDF]
Isabelle Paris,Patrick Petitjean,éric Aubourg,Nicholas P. Ross,Adam D. Myers,Alina Streblyanska,Stephen Bailey,Patrick B. Hall,Michael A. Strauss,Scott F. Anderson,Dmitry Bizyaev,Arnaud Borde,Jon Brinkmann,Jo Bovy,William N. Brandt,Howard Brewington,Joel R. Brownstein,Benjamin A. Cook,Garrett Ebelke,Xiaohui Fan,Nurten Filiz Ak,Hayley Finley,Andreu Font-Ribera,Jian Ge,Fred Hamann,Shirley Ho,Linhua Jiang,Karen Kinemuchi,Elena Malanushenko,Viktor Malanushenko,Moses Marchante,Ian D. McGreer,Richard G. McMahon,Jordi Miralda-Escudé,Demitri Muna,Pasquier Noterdaeme,Daniel Oravetz,Nathalie Palanque-Delabrouille,Kaike Pan,Isma?l Perez-Fournon,Matthew Pieri,Rogério Riffel,David J. Schlegel,Donald P. Schneider,Audrey Simmons,Matteo Viel,Benjamin A. Weaver,W. Michael Wood-Vasey,Christophe Yèche,Donald G. York
Physics , 2013, DOI: 10.1051/0004-6361/201322691
Abstract: We present the Data Release 10 Quasar (DR10Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the first 2.5 years of the survey and that are confirmed as quasars via visual inspection of the spectra. The catalog also includes known quasars (mostly from SDSS-I and II) that were reobserved by BOSS. The catalog contains 166,583 quasars (74,454 are new discoveries since SDSS-DR9) detected over 6,373 deg$^{2}$ with robust identification and redshift measured by a combination of principal component eigenspectra. The number of quasars with $z>2.15$ (117,668) is $\sim$5 times greater than the number of $z>2.15$ quasars known prior to BOSS. Redshifts and FWHMs are provided for the strongest emission lines (CIV, CIII, MgII). The catalog identifies 16,461 broad absorption line quasars and gives their characteristics. For each object, the catalog presents five-band (u, g, r, i, z) CCD-based photometry with typical accuracy of 0.03 mag and information on the optical morphology and selection method. The catalog also contains X-ray, ultraviolet, near-infrared, and radio emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra cover the wavelength region 3,600-10,500\AA\ at a spectral resolution in the range 1,300$<$R$<$2,500; the spectra can be retrieved from the SDSS Catalog Archive Server. We also provide a supplemental list of an additional 2,376 quasars that have been identified among the galaxy targets of the SDSS-III/BOSS.
The Sloan Digital Sky Survey Quasar Catalog II. First Data Release  [PDF]
Donald P. Schneider,Xiaohui Fan,Patrick B. Hall,Sebastian Jester,Gordon T. Richards,Chris Stoughton,Michael A. Strauss,Mark SubbaRao,Daniel E. Vanden Berk,Scott F. Anderson,W. N. Brandt,James E. Gunn,Jim Gray,Jonathan R. Trump,Wolfgang Voges,Brian Yanny
Physics , 2003, DOI: 10.1086/379174
Abstract: We present the second edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of 16713 objects in the SDSS First Data Release (DR1) that have luminosities larger than M_i=-22 (H_0=70 km/s, Omega_M=0.3, Omega_Lambda=0.7), have at least one emission line with FWHM larger than 1000 km/s, and have highly reliable redshifts. The area covered is ~1360 deg^2 and the redshifts range from 0.08 to 5.41, with a median value of 1.43. Each object has positions accurate to better than 0.2" rms per coordinate, five-band (ugriz) CCD-based photometry with typical accuracy of 0.03 mag, and information on the morphology and selection method, in addition to radio, near-infrared, and X-ray emission properties of the quasars, when available, from other large area surveys. Calibrated digital spectra covering 3800-9200 Angstroms at a spectral resolution 1800-2100, are available. This publication supersedes the first SDSS Quasar Catalog, which was based on material from the SDSS Early Data Release. A summary of corrections to current quasar databases is provided. The majority of the objects were found in SDSS commissioning data using a multicolor selection technique. Since the quasar selection algorithm was undergoing testing during the entire DR1 observational period, care must be taken when assembling samples for use in statistical studies. A total of 15786 objects (94%) in the catalog were discovered by the SDSS; 12,173 of which are reported here for the first time, including five quasars brighter than i=16.0 and 17 quasars with redshifts larger than 4.5.
The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release  [PDF]
Donald P. Schneider,Gordon T. Richards,Patrick B. Hall,Michael A. Strauss,Scott F. Anderson,Todd A. Boroson,Nicholas P. Ross,Yue Shen,W. N. Brandt,Xiaohui Fan,Naohisa Inada,Sebastian Jester,G. R. Knapp,Coleman M. Krawczyk,Anirudda R. Thakar,Daniel E. Vanden Berk,Wolfgang Voges,Brian Yanny,Donald G. York,Neta A. Bahcall,Dmitry Bizyaev,Michael R. Blanton,Howard Brewington,J. Brinkmann,Daniel Eisenstein,Joshua A. Frieman,Masataka Fukugita,Jim Gray,James E. Gunn,Pascale Hibon,Zeljko Ivezic,Stephen M. Kent,Richard G. Kron,Myung Gyoon Lee,Robert H. Lupton,Elena Malanushenko,Viktor Malanushenko,Dan Oravetz,K. Pan,Jeffrey R. Pier,Ted N. Price III,David H. Saxe,David J. Schlegel,Audry Simmons,Stephanie A. Snedden,Mark U. SubbaRao,Alexander S. Szalay,David H. Weinberg
Physics , 2010, DOI: 10.1088/0004-6256/139/6/2360
Abstract: We present the fifth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog, which is based upon the SDSS Seventh Data Release. The catalog, which contains 105,783 spectroscopically confirmed quasars, represents the conclusion of the SDSS-I and SDSS-II quasar survey. The catalog consists of the SDSS objects that have luminosities larger than M_i = -22.0 (in a cosmology with H_0 = 70 km/s/Mpc Omega_M = 0.3, and Omega_Lambda = 0.7) have at least one emission line with FWHM larger than 1000 km/s or have interesting/complex absorption features, are fainter than i > 15.0 and have highly reliable redshifts. The catalog covers an area of 9380 deg^2. The quasar redshifts range from 0.065 to 5.46, with a median value of 1.49; the catalog includes 1248 quasars at redshifts greater than four, of which 56 are at redshifts greater than five. The catalog contains 9210 quasars with i < 18; slightly over half of the entries have i< 19. For each object the catalog presents positions accurate to better than 0.1" rms per coordinate, five-band (ugriz) CCD-based photometry with typical accuracy of 0.03 mag, and information on the morphology and selection method. The catalog also contains radio, near-infrared, and X-ray emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra cover the wavelength region 3800-9200 Ang. at a spectral resolution R = 2000 the spectra can be retrieved from the SDSS public database using the information provided in the catalog. Over 96% of the objects in the catalog were discovered by the SDSS. We also include a supplemental list of an additional 207 quasars with SDSS spectra whose archive photometric information is incomplete.
The Sloan Digital Sky Survey quasar catalog: ninth data release  [PDF]
Isabelle Paris,Patrick Petitjean,Eric Aubourg,Stephen Bailey,Nicholas P. Ross,Adam D. Myers,Michael A. Strauss,Scott F. Anderson,Eduard Arnau,Julian Bautista,Dmitry Bizyaev,Adam S. Bolton,Jo Bovy,William N. Brandt,Howard Brewington,Joel R. Brownstein,Nicolas Busca,Daniel Capellupo,William Carithers,Rupert A. C. Croft,Kyle Dawson,Timothée Delubac,Garrett Ebelke,Daniel J. Eisenstein,Philip Engelke,Xiaohui Fan,Nur Filiz Ak,Hayley Finley,Andreu Font-Ribera,Jian Ge,Robert R. Gibson,Patrick B. Hall,Fred Hamann,Joseph F. Hennawi,Shirley Ho,David W. Hogg,Zeljko Ivezic,Linhua Jiang,Amy E. Kimball,David Kirkby,Jessica A. Kirkpatrick,Khee-Gan Lee,Jean-Marc Le Goff,Britt Lundgren,Chelsea L. MacLeod,Elena Malanushenko,Viktor Malanushenko,Claudia Maraston,Ian D. McGreer,Richard G. McMahon,Jordi Miralda-Escudé,Demitri Muna,Pasquier Noterdaeme,Daniel Oravetz,Nathalie Palanque-Delabrouille,Kaike Pan,Isma?l Perez-Fournon,Matthew M. Pieri,Gordon T. Richards,Emmanuel Rollinde,Erin S. Sheldon,David J. Schlegel,Donald P. Schneider,Anze Slosar,Alaina Shelden,Yue Shen,Audrey Simmons,Stephanie Snedden,Nao Suzuki,Jeremy Tinker,Matteo Viel,Benjamin A. Weaver,David H. Weinberg,Martin White,W. Michael Wood-Vasey,Christophe Yèche
Physics , 2012, DOI: 10.1051/0004-6361/201220142
Abstract: We present the Data Release 9 Quasar (DR9Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the survey, are spectrocopically confirmed as quasars via visual inspection, have luminosities Mi[z=2]<-20.5 (in a $\Lambda$CDM cosmology with H0 = 70 km/s/Mpc, $\Omega_{\rm M}$ = 0.3, and $\Omega_{\Lambda}$ = 0.7) and either display at least one emission line with full width at half maximum (FWHM) larger than 500 km/s or, if not, have interesting/complex absorption features. It includes as well, known quasars (mostly from SDSS-I and II) that were reobserved by BOSS. This catalog contains 87,822 quasars (78,086 are new discoveries) detected over 3,275 deg$^{2}$ with robust identification and redshift measured by a combination of principal component eigenspectra newly derived from a training set of 8,632 spectra from SDSS-DR7. The number of quasars with $z>2.15$ (61,931) is ~2.8 times larger than the number of z>2.15 quasars previously known. Redshifts and FWHMs are provided for the strongest emission lines (CIV, CIII], MgII). The catalog identifies 7,533 broad absorption line quasars and gives their characteristics. For each object the catalog presents five-band (u,g,r,i,z) CCD-based photometry with typical accuracy of 0.03 mag, and information on the morphology and selection method. The catalog also contains X-ray, ultraviolet, near-infrared, and radio emission properties of the quasars, when available, from other large-area surveys.
The Sloan Digital Sky Survey Data Release 7 M Dwarf Spectroscopic Catalog  [PDF]
Andrew A. West,Dylan P. Morgan,John J. Bochanski,Jan Marie Andersen,Keaton J. Bell,Adam F. Kowalski,James R. A. Davenport,Suzanne L. Hawley,Sarah J. Schmidt,David Bernat,Eric J. Hilton,Philip Muirhead,Kevin R. Covey,Barbara Rojas-Ayala,Everett Schlawin,Mary Gooding,Kyle Schluns,Saurav Dhital,J. Sebastian Pineda,David O. Jones
Physics , 2010,
Abstract: We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release (DR7) of the Sloan Digital Sky Survey (SDSS). For each spectrum, we provide measurements of the spectral type, a number of molecular bandheads, and the H-alpha, H-beta, H-gamma, H-delta and Ca II K emission lines. In addition, we calculate the metallicity-sensitive parameter zeta and 3D space motions for most of the stars in the sample. Our catalog is cross-matched to Two Micron All Sky Survey (2MASS) infrared data, and contains photometric distances for each star. Future studies will use these data to thoroughly examine magnetic activity and kinematics in late-type M dwarfs and examine the chemical and dynamical history of the local Milky Way.
New white dwarf stars in the Sloan Digital Sky Survey Data Release 10  [PDF]
S. O. Kepler,Ingrid Pelisoli,Detlev Koester,Gustavo Ourique,Scot J. Kleinman,Alejandra Daniela Romero,Atsuko Nitta,Daniel J. Eisenstein,José Eduardo da Silveira Costa,Baybars Külebi,Stefan Jordan,Patrick Dufour,Paolo Giommi,Alberto Rebassa-Mansergas
Physics , 2014, DOI: 10.1093/mnras/stu2388
Abstract: We report the discovery of 9 089 new spectroscopically confirmed white dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10. We obtain Teff, log g and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf stars (DBs), and estimate the calcium/helium abundances for the white dwarf stars with metallic lines (DZs) and carbon/helium for carbon dominated spectra DQs. We found 1 central star of a planetary nebula, 2 new oxygen spectra on helium atmosphere white dwarfs, 71 DQs, 42 hot DO/PG1159s, 171 white dwarf+main sequence star binaries, 206 magnetic DAHs, 327 continuum dominated DCs, 397 metal polluted white dwarfs, 450 helium dominated white dwarfs, 647 subdwarfs and 6888 new hydrogen dominated white dwarf stars.
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