1.3k citations · 23.5k across the 260 of their papers we have counts for
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The XMM-Newton Survey in the Marano Field I. The X-ray data and optical follow-up
M. Krumpe, G. Lamer, A. D. Schwope +6
We report on a medium deep XMM-Newton survey of the Marano Field and optical follow-up observations. The mosaicked XMM-Newton pointings in this optical quasar survey field cover 0.…
No color-morphology bimodality of AGN host galaxies
Asmus Boehm, Lutz Wisotzki, the GEMS team
It is still a matter of debate whether the properties of galaxies hosting an Active Galactic Nucleus (AGN) are different from the properties of quiescent galaxies. We constructed a…
An Explanation for the Observed Weak Size Evolution of Disk Galaxies
Rachel S. Somerville, Marco Barden, Hans-Walter Rix +14
Surveys of distant galaxies with the Hubble Space Telescope and from the ground have shown that there is only mild evolution in the relationship between radial size and stellar mas…
The Transverse Proximity Effect in Spectral Hardness
G. Worseck, L. Wisotzki
We report on our recent detection of the transverse proximity effect of 4 foreground quasars near Q0302-003 (z=3.285) as a local hardness fluctuation in the spectral shape of the i…
Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars
Rajib Ganguly, Michael S. Brotherton, Nahum Arav +35
We present low-resolution ultraviolet spectra of 14 low redshift (z<0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outf…
Bright Metal-Poor Stars from the Hamburg/ESO Survey. I. Selection and Follow-up Observations from 329 Fields
A. Frebel, N. Christlieb, J. E. Norris +9
We present a sample of 1777 bright (9<B<14) metal-poor candidates selected from the Hamburg/ESO Survey (HES). Despite saturation effects present in the red portion of the HES objec…
A weak lensing estimate from GEMS of the virial to stellar mass ratio in massive galaxies to z~0.8
Catherine Heymans, Eric F. Bell, Hans-Walter Rix +14
We present constraints on the evolution of the virial to stellar mass ratio of galaxies with high stellar masses in the redshift range 0.2<z<0.8, by comparing weak lensing measurem…
On-axis spectroscopy of the host galaxies of 20 optically luminous quasars at z~0.3
G. Letawe, P. Magain, F. Courbin +4
We present the analysis of a sample of 20 bright low-redshift quasars (M_B<-23 and z < 0.35) observed spectroscopically with the VLT. The FORS1 spectra, obtained in Multi Object Sp…
The stellar masses of 25000 galaxies at 0.2<z<1.0 estimated by the COMBO-17 survey
Andrea Borch, Klaus Meisenheimer, Eric F. Bell +6
We present an analysis of stellar mass estimates for a sample of 25000 galaxies from the COMBO-17 survey over the interval 0.2<z<1.0. We have developed, implemented, and tested a n…
Strange magnification pattern in the large separation lens SDSS J1004+4112 from optical to X-rays
G. Lamer, A. Schwope, L. Wisotzki +1
We present simultaneous XMM-Newton UV and X-ray observations of the quadruply lensed quasar SDSS J1004+4112 (RBS 825). Simultaneously with the XMM-Newton observations we also perfo…
A jet-cloud interaction in the 3C 196 environment
L. Christensen, K. Jahnke, L. Wisotzki +3
Powerful radio galaxies and radio-loud quasars at high redshifts are frequently associated with extended emission-line regions (EELRs). Here we investigate the [O II] EELR around t…
Extended Lyman alpha emission around bright quasars
L. Christensen, K. Jahnke, L. Wisotzki +1
Quasars trace the most massive structures at high redshifts and their presence may influence the evolution of the massive host galaxies. We study the extended Lyman alpha emission…
Quasars near the line of sight towards Q 0302-003 and the transverse proximity effect
G. Worseck, L. Wisotzki
We report the discovery of the faint (V=21.7) quasar QSO03027-0010 at z=2.808 in the vicinity of Q0302-003, one of the few quasars observed with STIS to study intergalactic HeII ab…