Zobrazeno 1 - 10
of 22
pro vyhledávání: '"G. S. Hennessy"'
Autor:
Tamás Budavári, István Csabai, Alexander S. Szalay, Andrew J. Connolly, Gyula P. Szokoly, Daniel E. Vanden Berk, Gordon T. Richards, Michael A. Weinstein, Donald P. Schneider, Narciso Benítez, J. Brinkmann, Robert Brunner, Patrick B. Hall, G. S. Hennessy, Željko Ivezić, Péter Z. Kunszt, Jeffrey A. Munn, R. C. Nichol, Jeffrey R. Pier, Donald G. York
Publikováno v:
ASTRONOMICAL JOURNAL
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
From SDSS commissioning photometric and spectroscopic data, we investigate the utility of photometric redshift techniques to the task of estimating QSO redshifts. We consider empirical methods (e.g. nearest-neighbor searches and polynomial fitting),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a1a3fbee402782bb7cb4e53540ff7ac
https://doi.org/10.1086/322131
https://doi.org/10.1086/322131
Autor:
Scott F. Anderson, Xiaohui Fan, Gordon T. Richards, Donald P. Schneider, Michael A. Strauss, Daniel E. Vanden Berk, James E. Gunn, Gillian R. Knapp, David Schlegel, Wolfgang Voges, Brian Yanny, Neta A. Bahcall, Mariangela Bernardi, J. Brinkmann, Robert Brunner, Istvan Csabái, Mamoru Doi, Masataka Fukugita, G. S. Hennessy, Željko Ivezić, Peter Z. Kunszt, Donald Q. Lamb, Jon Loveday, Robert H. Lupton, Timothy A. McKay, Jeffrey A. Munn, R. C. Nichol, G. P. Szokoly, Donald G. York
Publikováno v:
The Astronomical Journal. 122:503-517
We present results on over 100 high-redshift quasars found in the Sloan Digital Sky Survey (SDSS), using automated selection algorithms applied to SDSS imaging data and with spectroscopic confirmation obtained during routine spectroscopic operations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8df01227f220470d12abc000858c325e
https://doi.org/10.1086/321168
https://doi.org/10.1086/321168
Autor:
Daniel E. Vanden Berk, Gordon T. Richards, Amanda Bauer, Michael A. Strauss, Donald P. Schneider, Timothy M. Heckman, Donald G. York, Patrick B. Hall, Xiaohui Fan, G. R. Knapp, Scott F. Anderson, James Annis, Neta A. Bahcall, Mariangela Bernardi, John W. Briggs, J. Brinkmann, Robert Brunner, Scott Burles, Larry Carey, Francisco J. Castander, A. J. Connolly, J. H. Crocker, István Csabai, Mamoru Doi, Douglas Finkbeiner, Scott Friedman, Joshua A. Frieman, Masataka Fukugita, James E. Gunn, G. S. Hennessy, Željko Ivezić, Stephen Kent, Peter Z. Kunszt, D. Q. Lamb, R. French Leger, Daniel C. Long, Jon Loveday, Robert H. Lupton, Avery Meiksin, Aronne Merelli, Jeffrey A. Munn, Heidi Jo Newberg, Matt Newcomb, R. C. Nichol, Russell Owen, Jeffrey R. Pier, Adrian Pope, Constance M. Rockosi, David J. Schlegel, Walter A. Siegmund, Stephen Smee, Yehuda Snir, Chris Stoughton, Christopher Stubbs, Mark SubbaRao, Alexander S. Szalay, Gyula P. Szokoly, Christy Tremonti, Alan Uomoto, Patrick Waddell, Brian Yanny, Wei Zheng
Publikováno v:
ASTRONOMICAL JOURNAL
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
We have created a variety of composite quasar spectra using a homogeneous data set of over 2200 spectra from the Sloan Digital Sky Survey (SDSS). The quasar sample spans a redshift range of 0.044
40 pages, including 11 postscript figures, accept
40 pages, including 11 postscript figures, accept
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::718ff7b2613a6184f59d286f867501d1
https://doi.org/10.1086/321167
https://doi.org/10.1086/321167
Autor:
Michael R. Blanton, Julianne Dalcanton, Daniel Eisenstein, Jon Loveday, Michael A. Strauss, Mark SubbaRao, David H. Weinberg, John E. Anderson, Jr., James Annis, Neta A. Bahcall, Mariangela Bernardi, J. Brinkmann, Robert J. Brunner, Scott Burles, Larry Carey, Francisco J. Castander, Andrew J. Connolly, István Csabai, Mamoru Doi, Douglas Finkbeiner, Scott Friedman, Joshua A. Frieman, Masataka Fukugita, James E. Gunn, G. S. Hennessy, Robert B. Hindsley, David W. Hogg, Takashi Ichikawa, Željko Ivezić, Stephen Kent, G. R. Knapp, D. Q. Lamb, R. French Leger, Daniel C. Long, Robert H. Lupton, Timothy A. McKay, Avery Meiksin, Aronne Merelli, Jeffrey A. Munn, Vijay Narayanan, Matt Newcomb, R. C. Nichol, Sadanori Okamura, Russell Owen, Jeffrey R. Pier, Adrian Pope, Marc Postman, Thomas Quinn, Constance M. Rockosi, David J. Schlegel, Donald P. Schneider, Kazuhiro Shimasaku, Walter A. Siegmund, Stephen Smee, Yehuda Snir, Chris Stoughton, Christopher Stubbs, Alexander S. Szalay, Gyula P. Szokoly, Aniruddha R. Thakar, Christy Tremonti, Douglas L. Tucker, Alan Uomoto, Dan Vanden Berk, Michael S. Vogeley, Patrick Waddell, Brian Yanny, Naoki Yasuda, Donald G. York
Publikováno v:
The Astronomical Journal. 121:2358-2380
During commissioning observations, the Sloan Digital Sky Survey (SDSS) has produced one of the largest existing galaxy redshift samples selected from CCD images. Using 11,275 galaxies complete to r^* = 17.6 over 140 square degrees, we compute the lum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4810a676fdf419b37efe9d24031d76b6
https://doi.org/10.1086/320405
https://doi.org/10.1086/320405
Autor:
Donald P. Schneider, Xiaohui Fan, Michael A. Strauss, James E. Gunn, Gordon T. Richards, Gary J. Hill, Phillip J. MacQueen, Lawrence W. Ramsey, Mark T. Adams, John A. Booth, Grant M. Hill, G. R. Knapp, Robert H. Lupton, David H. Saxe, Matthew Shetrone, Joseph R. Tufts, Daniel E. Vanden Berk, Marsha J. Wolf, Donald G. York, John E. Anderson, Jr., Scott F. Anderson, Neta A. Bahcall, J. Brinkmann, Robert Brunner, István Csabai, Masataka Fukugita, G. S. Hennessy, Željko Ivezić, Donald Q. Lamb, Jeffrey A. Munn, Aniruddha R. Thakar
Publikováno v:
The Astronomical Journal. 121:1232-1240
We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning data. The redshifts were confirmed with low resolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03bf50de3ed53e3fb994752a964598b9
https://doi.org/10.1086/319422
https://doi.org/10.1086/319422
Autor:
Xiaohui Fan, Michael A. Strauss, Gordon T. Richards, Jeffrey A. Newman, Robert H. Becker, Donald P. Schneider, James E. Gunn, Marc Davis, Richard L. White, Robert H. Lupton, John E. Anderson, Jr., James Annis, Neta A. Bahcall, Robert J. Brunner, István Csabai, Mamoru Doi, Masataka Fukugita, G. S. Hennessy, Robert B. Hindsley, Željko Ivezić, Gillian R. Knapp, Timothy A. McKay, Jeffrey A. Munn, Jeffrey R. Pier, Alexander S. Szalay, Donald G. York
Publikováno v:
The Astronomical Journal. 121:31-53
This is the third paper in a series aimed at finding high-redshift quasars from five-color (u'g'r'i'z') imaging data taken along the Celestial Equator by the SDSS during its commissioning phase. In this paper, we first present the observations of 14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba22a07201b1991292982b5404c126de
https://doi.org/10.1086/318032
https://doi.org/10.1086/318032
Autor:
Wei Zheng, Zlatan I. Tsvetanov, Donald P. Schneider, Xiaohui Fan, Robert H. Becker, Marc Davis, Richard L. White, Michael A. Strauss, John E. Anderson, Jr., James Annis, Neta A. Bahcall, A. J. Connolly, István Csabai, Arthur F. Davidsen, Masataka Fukugita, James E. Gunn, Timothy M. Heckman, G. S. Hennessy, Željko Ivezić, G. R. Knapp, Robert H. Lupton, Eric Peng, Alexander S. Szalay, Aniruddha R. Thakar, Brian Yanny, Donald G. York
Publikováno v:
Scopus-Elsevier
We report the discovery of five quasars with redshifts of 4.67 - 5.27 and z'-band magnitudes of 19.5-20.7 M_B ~ -27. All were originally selected as distant quasar candidates in optical/near-infrared photometry from the Sloan Digital Sky Survey (SDSS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::865cf0c06f36264ab3ee1756cf0afd53
https://doi.org/10.1086/301570
https://doi.org/10.1086/301570
Autor:
Xiaohui Fan, Richard L. White, Marc Davis, Robert H. Becker, Michael A. Strauss, Zoltan Haiman, Donald P. Schneider, Michael D. Gregg, James E. Gunn, G. R. Knapp, Robert H. Lupton, John E. Anderson, Jr., Scott F. Anderson, James Annis, Neta A. Bahcall, William N. Boroski, Robert J. Brunner, Bing Chen, Andrew J. Connolly, István Csabai, Mamoru Doi, Masataka Fukugita, G. S. Hennessy, Robert B. Hindsley, Takashi Ichikawa, Željko Ivezić, Jon Loveday, Avery Meiksin, Timothy A. McKay, Jeffrey A. Munn, Heidi Jo Newberg, Robert Nichol, Sadanori Okamura, Jeffrey R. Pier, Maki Sekiguchi, Kazuhiro Shimasaku, Chris Stoughton, Alexander S. Szalay, Gyula P. Szokoly, Aniruddha R. Thakar, Michael S. Vogeley, Donald G. York
Publikováno v:
The Astronomical Journal. 120:1167-1174
We present observations of SDSSp J104433.04--012502.2, a luminous quasar at z=5.80 discovered from Sloan Digital Sky Survey (SDSS) multicolor imaging data. This object was selected as an i'-band dropout object, with i*=21.8 +/- 0.2, z*=19.2 +/- 0.1.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e67a67ff9d584276f4d2cf648c34dc0b
https://doi.org/10.1086/301534
https://doi.org/10.1086/301534
Autor:
S. K. Leggett, T. R. Geballe, Xiaohui Fan, Donald P. Schneider, James E. Gunn, Robert H. Lupton, G. R. Knapp, Michael A. Strauss, Alex McDaniel, David A. Golimowski, Todd J. Henry, Eric Peng, Zlatan I. Tsvetanov, Alan Uomoto, Wei Zheng, G. J. Hill, L. W. Ramsey, Scott F. Anderson, James A. Annis, Neta A. Bahcall, J. Brinkmann, Bing Chen, István Csabai, Masataka Fukugita, G. S. Hennessy, Robert B. Hindsley, Željko Ivezić, D. Q. Lamb, Jeffrey A. Munn, Jeffrey R. Pier, David J. Schlegel, J. Allyn Smith, Chris Stoughton, A. R. Thakar, Donald G. York
Publikováno v:
Scopus-Elsevier
We report the discovery of three cool brown dwarfs which fall in the effective temperature gap between the latest L dwarfs currently known, with no methane absorption bands in the 1-2.5um range, and the previously known methane (T) dwarfs, whose spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76ec5465d8a1ae7f18dfa1d5d9408513
https://doi.org/10.1086/312728
https://doi.org/10.1086/312728
Autor:
D. P. Schneider, Gary J. Hill, X. Fan, L. W. Ramsey, P. J. MacQueen, D. W. Weedman, J. A. Booth, M. Eracleous, J. E. Gunn, R. H. Lupton, M. T. Adams, S. Bastian, R. Bender, E. Berman, J. Brinkmann, I. Csabai, G. Federwitz, V. Gurbani, G. S. Hennessy, G. M. Hill, R. B. Hindsley, Z. Ivezić, G. R. Knapp, D. Q. Lamb, C. Lindenmeyer, P. Mantsch, C. Nance, T. Nash, J. R. Pier, R. Rechenmacher, B. Rhoads, C. H. Rivetta, E. L. Robinson, B. Roman, G. Sergey, M. Shetrone, C. Stoughton, M. A. Strauss, G. P. Szokoly, D. L. Tucker, G. Wesley, J. Willick, P. Worthington, D. G. York
Publikováno v:
Publications of the Astronomical Society of the Pacific. 112:6-11
This paper describes spectra of quasar candidates acquired during the commissioning phase of the Low-Resolution Spectrograph of the Hobby-Eberly Telescope. The objects were identified as possible quasars from multicolor image data from the Sloan Digi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d80cc3ef78c4c3f9a4f49297a5e968a7
https://doi.org/10.1086/316491
https://doi.org/10.1086/316491