Zobrazeno 1 - 10
of 187
pro vyhledávání: '"D. W. Weedman"'
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
Autor:
Arjun Dey, M. L. N. Ashby, Buell T. Jannuzi, Vassilis Charmandaris, Lee Armus, E. Le Floc'h, Sarah J.U. Higdon, B. T. Soifer, James R. Houck, Colin Borys, D. W. Weedman, Vandana Desai, J. L. Higdon, Henrik Spoon, C. Bian, Howard A. Smith, Michael J. I. Brown, Kate Brand
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2006, 641, pp.133-139. ⟨10.1086/500426⟩
The Astrophysical Journal, 2006, 641, pp.133-139. ⟨10.1086/500426⟩
We present low-resolution (64 < R < 124) mid-infrared (8--38 micron) Spitzer/IRS spectra of two z~1.3 ultraluminous infrared galaxies (LFIR~10^13) discovered in a Spitzer/MIPS survey of the Bootes field of the NOAO Deep Wide-Field Survey (NDWFS). MIP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e175b48d469d3a61bd8b6333f9563958
Spectra have been obtained with the Infrared Spectrograph on the Spitzer Space Telescope for 18 optically faint sources (R > 23.9,mag) having f(nu) (24um) > 1.0,mJy and having radio detections at 20 cm to a limit of 115 microJy. Sources are within th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddeb33eff5ab0ab4012d4231cff1fdc3
Autor:
L. Armus, V. Charmandaris, H. W. W. Spoon, J. R. Houck, B. T. Soifer, B. R. Brandl, P. N. Appleton, H. I. Teplitz, S. J. U. Higdon, D. W. Weedman, D. Devost, P. W. Morris, K. I. Uchida, J. van Cleve, D. J. Barry, G. C. Sloan, C. J. Grillmair, M. J. Burgdorf, S. B. Fajardo‐Acosta, J. G. Ingalls, J. Higdon, L. Hao, J. Bernard‐Salas, T. Herter, J. Troeltzsch, B. Unruh, M. Winghart
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2004, 154, pp.178-183
The Astrophysical Journal, 2004, 154, pp.178-183
We present spectra taken with the Infrared Spectrograph on Spitzer covering the 5-38micron region of three Ultraluminous Infrared Galaxies (ULIRGs): Mrk 1014 (z=0.163), and Mrk 463 (z=0.051), and UGC 5101 (z=0.039). The continua of UGC 5101 and Mrk 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b72ff3fdf56f8949360e6ff2674eed47
We present near infrared observations of the red gravitational lens system MG0414+0534. Our images are of sufficient quality to allow photometry of all four QSO images and the lens galaxy. The observations show that the K-band brightnesses of the com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cefc01268337847354bb403a3d56ea7
Autor:
D. W. Weedman
Publikováno v:
Publications of the Astronomical Society of the Pacific. 111:119-120
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afca8bc968d1c2867ec876f35bf0403c
https://doi.org/10.1086/316291
https://doi.org/10.1086/316291
Autor:
D. W. Weedman
Publikováno v:
Nature. 344(6261)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fc7fee40736d53382f1231b398ffe38
https://pubmed.ncbi.nlm.nih.gov/18278007
https://pubmed.ncbi.nlm.nih.gov/18278007
Autor:
D. W. Weedman
Publikováno v:
AIP Conference Proceedings.
Recent results are reviewed which demonstrate that finding the earliest quasars and galaxies in the universe will require infrared spectroscopy between 1 and 10 microns. Technical limitations on such observations from the Moon are summarized, which d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82cca9ec6dd195870228a40baebd6a4e
https://doi.org/10.1063/1.39332
https://doi.org/10.1063/1.39332
Autor:
D. W. Weedman
Publikováno v:
Science. 282:423-424
Active galaxies are unusual in their structure and brightness. The general consensus is that active galaxies are powered by matter falling into black holes, but questions remain about the precise mechanism of the infall and how the very bright lumino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::524326d08af0d5f943b9d21ac83854af
https://doi.org/10.1126/science.282.5388.423
https://doi.org/10.1126/science.282.5388.423
Publikováno v:
The Astrophysical Journal. 433:528
Deep K-band observations are presented of the double image quasar Q2345+007. This has the largest separation (7.1 sec) of any quasar image pair considered as gravitationally lensed, so the required lens is massive (10(exp 13) solar masses). No lens h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eed369b93112d89f6801c7143886808e
https://doi.org/10.1086/174664
https://doi.org/10.1086/174664