Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Petry, C. E."'
Publikováno v:
Astron.J.132:2046-2073,2006
We present spectroscopic observations for quasars Q0107-025A, Q0107-025B, and Q0107-0232. For the first time, all data obtained with the Hubble Space Telescope's GHRS and FOS for these three quasars are combined. Ly-alpha absorbers selected from the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610350
We present UBRI photometry and spectra for 60 quasars found within one square degree centered on the J0053+1234 region, which has been the subject of the Caltech Faint Galaxy Redshift Survey. Candidate quasars were selected by their ultraviolet exces
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405071
Publikováno v:
Astrophys.J.574:623-633,2002
We present spectroscopic observations with Keck/LRIS of LBQS 0015+0239, a pair of quasars at z = 2.45 with a separation of $\Delta\theta = 2.2$ arcsec (projected linear distance of 17.8 $h_{70}^{-1}$ kpc, for $\Omega_m = 0.3$, $\Lambda = 0.7$). Lensi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0204084
We describe techniques for comparing spectra extracted from cosmological simulations and observational data, using the same methodology to link Lyman-alpha properties derived from the simulations with properties derived from observational data. The e
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110450
Autor:
White, R. L., Becker, R. H., Gregg, M. D., Laurent-Muehleisen, S. A., Brotherton, M. S., Impey, C. D., Petry, C. E., Foltz, C. B., Chaffee, F. H., Richards, G. T., Oegerle, W. R., Helfand, D. J., McMahon, R. G., Cabanela, J. E.
Publikováno v:
Astrophys.J.Suppl.126:133,2000
We have used the VLA FIRST survey and the APM catalog of the POSS-I plates as the basis for constructing a new radio-selected sample of optically bright quasars. This is the first radio-selected sample that is competitive in size with current optical
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912215
Publikováno v:
Astrophys.J.524:536,1999
Spectroscopy of ten quasars obtained with the Goddard High Resolution Spectrograph (GHRS) of the Hubble Space Telescope (HST) is presented. A clustering analysis reveals an excess of nearest neighbor line pairs on velocity scales of 250-750 km/s at a
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905381
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Astronomical Journal; Nov2006, Vol. 132 Issue 5, p2046-2073, 28p
Publikováno v:
Astrophysical Journal; 5/10/1996, Vol. 462 Issue 2, pL53-L57, 5p
Publikováno v:
The Astrophysical Journal; February 1998, Vol. 494 Issue: 1 p60-89, 30p