We present a moderate resolution (~1.15 Angstroms/pixel) survey of 79 quasars obtained using the Kast spectrograph on the Shane 3m telescope at Lick observatory. The spectra span the wavelength range of 3175-5880 Angstroms, and have typical signal to noise of 6-20 in the regions of the spectra showing Lyman alpha forest absorption. The quasars have a mean emission redshift of z=2.17, and nearly all cover the entire Lyman alpha forest between Lyman alpha and Lyman beta. Although the quasars were selected to avoid BAL, two quasars in the survey are BAL, one of which is a new discovery. We list the HI and metal ions observed in a total of 140 absorption systems. We also identify 526 emission lines, and list their observed wavelengths, along wi...
The APM multicolor survey for bright z > 4 objects, covering 2500 deg^2 of sky to m_r ~ 19, resulted...
We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
The ionizing continuum from active galactic nuclei is fundamental for interpreting their broad emiss...
We have completed spectroscopic observations using LRIS on the Keck 1 telescope of 30 very high reds...
This dissertation investigates the properties of the metal-containing absorption lines seen in quasa...
We measure the power spectrum, P_F(k,z), of the transmitted flux in the Ly-alpha forest using 3035 h...
Artículo de publicación ISIWe present FWHM = 5 to 8 Angstrom optical spectra of nine previously unkn...
We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the comp...
We present the Lyman-α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
With the recent release of large (i.e., e100 million objects), well-calibrated photometric surveys, ...
We present the spectra, positions, and finding charts for 31 bright (R4.5. The majority are in the s...
The average flux decrement shortward the Ly(alpha) emission, due to the well-known ''forest'' of abs...
Results from a survey to detect quasars at redshifts greater than four utilizing CCD imaging on a Sc...
Quasar-absorber systems are integral to the study of distant objects that are too dim to be observed...
We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
The APM multicolor survey for bright z > 4 objects, covering 2500 deg^2 of sky to m_r ~ 19, resulted...
We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
The ionizing continuum from active galactic nuclei is fundamental for interpreting their broad emiss...
We have completed spectroscopic observations using LRIS on the Keck 1 telescope of 30 very high reds...
This dissertation investigates the properties of the metal-containing absorption lines seen in quasa...
We measure the power spectrum, P_F(k,z), of the transmitted flux in the Ly-alpha forest using 3035 h...
Artículo de publicación ISIWe present FWHM = 5 to 8 Angstrom optical spectra of nine previously unkn...
We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the comp...
We present the Lyman-α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
With the recent release of large (i.e., e100 million objects), well-calibrated photometric surveys, ...
We present the spectra, positions, and finding charts for 31 bright (R4.5. The majority are in the s...
The average flux decrement shortward the Ly(alpha) emission, due to the well-known ''forest'' of abs...
Results from a survey to detect quasars at redshifts greater than four utilizing CCD imaging on a Sc...
Quasar-absorber systems are integral to the study of distant objects that are too dim to be observed...
We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
The APM multicolor survey for bright z > 4 objects, covering 2500 deg^2 of sky to m_r ~ 19, resulted...
We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtai...
The ionizing continuum from active galactic nuclei is fundamental for interpreting their broad emiss...