Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Vijay K. Narayanan"'
Autor:
Vijay K. Narayanan
Publikováno v:
Proceedings of the Fifteenth ACM International Conference on Web Search and Data Mining.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::309398150048f2b4cd706d4f3bd7b015
https://doi.org/10.1145/3488560.3510006
https://doi.org/10.1145/3488560.3510006
Autor:
Hans Walter Rix, Vijay K. Narayanan, Daniel Harbeck, Donald P. Schneider, Laura Pentericci, Francisco Prada, Xiaohui Fan, Eva K. Grebel, Jon Brinkmann, Michael A. Strauss
Publikováno v:
Astronomy & Astrophysics. 410:75-82
We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of optical colors and spans a redshift range from 3.6 to 5.03. Our photometry reflects the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ed74b9456f6d81aa307d85be378abd3
https://doi.org/10.1051/0004-6361:20031201
https://doi.org/10.1051/0004-6361:20031201
Autor:
Max Tegmark, István Szapudi, Takahiko Matsubara, Vijay K. Narayanan, Alexander S. Szalay, Lam Hui, Albert Stebbins, James E. Gunn, Jon Loveday, David Johnston, Daniel J. Eisenstein, Joshua A. Frieman, Ravi K. Sheth, Scott Dodelson, Liam O'Connell, Michael S. Vogeley, Bhuvnesh Jain, Michael A. Strauss, Roman Scoccimarro, Martin Kerscher, Avery Meiksin, Ryan Scranton, Robert C. Nichol, Idit Zehavi, Andrew J. Connolly, Adrian Pope, Stephen B. H. Kent
Publikováno v:
The Astrophysical Journal. 591:1-11
We present measurements of parameters of the 3-dimensional power spectrum of galaxy clustering from 222 square degrees of early imaging data in the Sloan Digital Sky Survey. The projected galaxy distribution on the sky is expanded over a set of Karhu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b197696a4f485c800dc324022ebdf74
https://doi.org/10.1086/375264
https://doi.org/10.1086/375264
Autor:
Xiaohui Fan, Michael A. Strauss, Donald P. Schneider, Robert H. Becker, Richard L. White, Zoltán Haiman, Michael Gregg, Laura Pentericci, Eva K. Grebel, Vijay K. Narayanan, Yeong-Shang Loh, Gordon T. Richards, James E. Gunn, Robert H. Lupton, Gillian R. Knapp, Željko Ivezić, W. N. Brandt, Matthew Collinge, Lei Hao, Daniel Harbeck, Francisco Prada, Joop Schaye, Iskra Strateva, Nadia Zakamska, Scott Anderson, Jon Brinkmann, Neta A. Bahcall, Don Q. Lamb, Sadanori Okamura, Alex Szalay, Donald G. York
Publikováno v:
The Astronomical Journal. 125:1649-1659
We present the discovery of three new quasars at z>6 in 1300 deg^2 of SDSS imaging data, J114816.64+525150.3 (z=6.43), J104845.05+463718.3 (z=6.23) and J163033.90+401209.6 (z=6.05). The first two objects have weak Ly alpha emission lines; their redsh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::603785be10ce9d3694d97582f9fa37f2
https://doi.org/10.1086/368246
https://doi.org/10.1086/368246
Autor:
Željko Ivezić, Kristen Menou, Gillian R. Knapp, Michael A. Strauss, Robert H. Lupton, Daniel E. Vanden Berk, Gordon T. Richards, Christy Tremonti, Michael A. Weinstein, Scott Anderson, Neta A. Bahcall, Robert H. Becker, Mariangela Bernardi, Michael Blanton, Daniel Eisenstein, Xiaohui Fan, Douglas Finkbeiner, Kristian Finlator, Joshua Frieman, James E. Gunn, Pat B. Hall, Rita S. J. Kim, Ali Kinkhabwala, Vijay K. Narayanan, Constance M. Rockosi, David Schlegel, Donald P. Schneider, Iskra Strateva, Mark SubbaRao, Aniruddha R. Thakar, Wolfgang Voges, Richard L. White, Brian Yanny, Jonathan Brinkmann, Mamoru Doi, Masataka Fukugita, Gregory S. Hennessy, Jeffrey A. Munn, Robert C. Nichol, Donald G. York
Publikováno v:
The Astronomical Journal. 124:2364-2400
We discuss the optical and radio properties of 30,000 FIRST sources positionally associated with an SDSS source in 1230 deg$^2$ of sky. The majority (83%) of the FIRST sources identified with an SDSS source brighter than r=21 are optically resolved.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c99e8fdaa910845767684dcb0cd4f2
https://doi.org/10.1086/344069
https://doi.org/10.1086/344069
Autor:
Marc Postman, Vijay K. Narayanan, Bhuvnesh Jain, Michael S. Vogeley, Lam Hui, István Szapudi, Michael A. Strauss, Jon Loveday, Daniel J. Eisenstein, Ryan Scranton, Andrew J. Connolly, Alexander S. Szalay, Ravi K. Sheth, David Johnston, Albert Stebbins, Joshua A. Frieman, Stephen B. H. Kent, James E. Gunn, Roman Scoccimarro, Robert C. Nichol, Liam O'Connell, Max Tegmark, Scott Dodelson, Idit Zehavi
Publikováno v:
The Astrophysical Journal. 579:42-47
The Sloan Digital Sky Survey is one of the first multicolor photometric and spectroscopic surveys designed to measure the statistical properties of galaxies within the local Universe. In this Letter we present some of the initial results on the angul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9301c2f61a92e1312150f7cb9dcc5c47
https://doi.org/10.1086/342787
https://doi.org/10.1086/342787
Autor:
Ravi K. Sheth, Alexander S. Szalay, Idit Zehavi, István Szapudi, Max Tegmark, A. J. Connolly, David Johnston, Vijay K. Narayanan, Ryan Scranton, Scott Dodelson, Michael S. Vogeley, Robert C. Nichol, Stephen B. H. Kent, Liam O'Connell, Roman Scoccimarro, Michael A. Strauss, Daniel J. Eisenstein, James E. Gunn, Albert Stebbins, Joshua A. Frieman, Jon Loveday, Lam Hui, Bhuvnesh Jain
Publikováno v:
The Astrophysical Journal. 579:48-75
The angular distribution of galaxies encodes a wealth of information about large scale structure. Ultimately, the Sloan Digital Sky Survey (SDSS) will record the angular positions of order 10^8 galaxies in five bands, adding significantly to the cosm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91bb817087e6427054ed58b4e64f266c
https://doi.org/10.1086/342786
https://doi.org/10.1086/342786
Autor:
Bhuvnesh Jain, István Csabai, Daniel J. Eisenstein, Ravi K. Sheth, Lam Hui, Ryan Scranton, Jon Loveday, István Szapudi, David Johnston, Alexander S. Szalay, Albert Stebbins, Joshua A. Frieman, Roman Scoccimarro, Tamás Budavári, Michael S. Vogeley, Robert C. Nichol, Liam O'Connell, James E. Gunn, Andrew J. Connolly, Vijay K. Narayanan, Scott Dodelson, Max Tegmark, Stephen B. H. Kent, Michael A. Strauss, Idit Zehavi
Publikováno v:
The Astrophysical Journal. 572:140-156
Early photometric data from the Sloan Digital Sky Survey (SDSS) contain angular positions for 1.5 million galaxies. In companion papers, the angular correlation function $w(\theta)$ and 2D power spectrum $C_l$ of these galaxies are presented. Here we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55d552099d4fe62d67fdfe8b476e7b0a
https://doi.org/10.1086/340225
https://doi.org/10.1086/340225
Autor:
Michael A. Strauss, Ryan Scranton, István Szapudi, Idit Zehavi, Michael S. Vogeley, Ravi K. Sheth, Roman Scoccimarro, David Johnston, James E. Gunn, Andrew J. Connolly, Scott Dodelson, Alexander S. Szalay, Max Tegmark, Liam O'Connell, Robert C. Nichol, Albert Stebbins, Vijay K. Narayanan, Joshua A. Frieman, Daniel J. Eisenstein, Stephen B. H. Kent, Bhuvnesh Jain, Lam Hui, Jon Loveday
Publikováno v:
The Astrophysical Journal. 571:191-205
We compute the angular power spectrum C_l from 1.5 million galaxies in early SDSS data on large angular scales, l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a68d72ddb2ad4984ffd65af2e91d4f50
https://doi.org/10.1086/339894
https://doi.org/10.1086/339894
Autor:
D. Q. Lamb, Laura Pentericci, G. P. Szokoly, D. P. Schneider, Michael A. Strauss, Xiaohui Fan, Julian H. Krolik, Vijay K. Narayanan, H. W. Rix, Timothy M. Heckman, Gordon T. Richards, J. Brinkmann
Publikováno v:
The Astronomical Journal. 123:2151-2158
We present new VLT spectroscopic observations of the most distant quasar known, SDSS J1030+0524 at z=6.28 which was recently discovered by the Sloan Digital Sky Survey. We confirm the presence of a complete Gunn-Peterson trough caused by neutral hydr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9294e4f674c3e18e9b6cd57781f2df7
https://doi.org/10.1086/340077
https://doi.org/10.1086/340077