Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Weymann, Ray J."'
Publikováno v:
Astrophys.J. 591 (2003) 623
We present results on two related topics: 1. A discussion of high redshift candidates (z>4.5), and 2. A study of very small galaxies at intermediate redshifts, both sets being detected in the region of the northern Hubble Deep Field covered by deep N
Externí odkaz:
http://arxiv.org/abs/astro-ph/0303618
Autor:
Kulkarni, Varsha P., Hill, John M., Schneider, Glenn, Weymann, Ray J., Storrie-Lombardi, Lisa J., Rieke, Marcia J., Thompson, Rodger I., Jannuzzi, Buell T.
We have carried out a high-resolution imaging search for the galaxy associated with the damped Lyman-alpha (DLA) absorber at z=1.859 toward the z_{em}=2.48 quasar QSO 1244+3443, using the HST and the NICMOS. Images were obtained in the broad filter F
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012140
Publikováno v:
Astrophys.Space Sci. 269 (1999) 493-499
This paper presents the star formation history in the NICMOS Northern Deep HDF. It uses the techniques of photometric redshifts and extinctions to correct for extinction of the ultra-violet flux. It presents a new method for correcting for surface br
Externí odkaz:
http://arxiv.org/abs/astro-ph/0008276
Autor:
Kulkarni, Varsha P., Hill, John M., Schneider, Glenn, Weymann, Ray J., Storrie-Lombardi, Lisa J., Rieke, Marcia J., Thompson, Rodger I., Jannuzi, Buell T.
We report results of a high-resolution imaging search (in rest frame H-$\alpha$ and optical continuum) for the galaxy associated with the damped Lyman-$\alpha$ (DLA) absorber at $z=1.892$ toward the $z_{em}=2.543$ quasar LBQS 1210+1731, using HST/NIC
Externí odkaz:
http://arxiv.org/abs/astro-ph/0002445
Autor:
Yan, Lin, McCarthy, Patrick J., Freudling, Wolfram, Teplitz, Harry I., Malumuth, Eliot M., Weymann, Ray J., Malkan, Matthew A.
We present a luminosity function for H$\alpha$ emission from galaxies at redshifts between 0.7 and 1.9 based on slitless spectroscopy with NICMOS on HST. The luminosity function is well fit by a Schechter function over the range $6 \times 10^{41} < L
Externí odkaz:
http://arxiv.org/abs/astro-ph/9904427
Autor:
Thompson, Rodger I., Storrie-Lombardi, Lisa J., Weymann, Ray J., Rieke, Marcia J., Schneider, Glenn, Stobie, Elizabeth, Lytle, Dyer
This paper contains a catlog of sources observed in a portion of the Hubble Deep Field by the NICMOS instrument. Methods of observation and data analysis are discussed. The catalog has two parts. The first is a listing of all sources with signal to n
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810285
We present results from our analysis of F160W NICMOS Parallel images. These data cover $\sim$~9~sq. arcminutes and reach 3$\sigma$ depths of H$=$ 24.3 $-$ 25.5 in a $0.6''$ diameter aperture with integration times of 2,000 to 13,000 seconds. We deriv
Externí odkaz:
http://arxiv.org/abs/astro-ph/9809044
Autor:
Weymann, Ray J., Jannuzi, Buell T., Lu, Limin, Bahcall, John N., Bergeron, Jacqueline, Boksenberg, Alec, Hartig, George F., Kirhakos, Sofia, Sargent, W. L. W., Savage, Blair D., Schneider, Donald P., Turnshek, David A., Wolfe, Arthur M.
Publikováno v:
ApJ, 506 (1998) 1
We present an analysis of the evolution of the Ly alpha absorption lines in the redshift interval 0.0 to \sim 1.5 based upon a sample of 987 lines identified in the spectra of 63 QSOs obtained with the Faint Object Spectrograph on the Hubble Space Te
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806123
Autor:
Jannuzi, Buell T., Bahcall, John N., Bergeron, Jacqueline, Boksenberg, Alec, Hartig, George F., Kirhakos, Sofia, Sargent, W. L. W., Savage, Blair D., Schneider, Donald P., Turnshek, David A., Weymann, Ray J., Wolfe, Arthur M.
Publikováno v:
Astrophys.J.Suppl. 118 (1998) 1
We present a catalogue of absorption lines obtained from the analysis of the ultra-violet spectra of 66 quasars. The data were acquired with the Faint Object Spectrograph of the HST as part of the Quasar Absorption Line Survey, a Key Project for the
Externí odkaz:
http://arxiv.org/abs/astro-ph/9805148
We present the results of a GHRS program to monitor the absorption lines in the spectrum of the Seyfert 1 galaxy NGC 4151 caused by outflowing gas from the nucleus. Although we see subtle changes over the four year period in the GHRS spectra of the b
Externí odkaz:
http://arxiv.org/abs/astro-ph/9610227