Are red 2MASS QSOs young? (2008)
Georgakakis, A., Clements, D. L., Bendo, G., Rowan-Robinson, M., Nandra, K., Brotherton, M. S.
We use photometric data from Spitzer to explore the mid- and far-IR properties of 10 red QSOs (J-K>2, R-K>5) selected by combining the 2MASS in the NIR with the SDSS at optical wavelengths. Optical...
Black hole mass and variability in quasars (2008)
Wold, M., Brotherton, M. S., Shang, Z.
We report on a study that finds a positive correlation between black hole mass and variability amplitude in quasars. Roughly 100 quasars at z
Quasar Optical Variability and Black Hole Mass (2008)
M. S. Brotherton, M. Wold, Z. Shang
In order to investigate the dependence of quasar optical-UV variability on fundamental physical parameters like black hole mass, we have matched quasars from the QUEST1 variability survey with...
M. S. Brotherton, Wil Van Breugel, R. J. Smith, B. J. Boyle, T. Shanks, S. M. Croom, ...
We report the discovery of five broad-absorption-line (BAL) QSOs in a complete sample of 111 ultraviolet excess (UVX) QSO candidates also detected in the NRAO VLA Sky Survey. All five BAL QSOs, which...
A Spectacular Post-Starburst Quasar (2007)
Brotherton Wil Van, M. S. Brotherton, S. A. Stanford, R. J. Smith, B. J. Boyle, Lance Miller, ...
We report the discovery of a spectacular "post-starburst quasar" UN J1025\Gamma0040 (B = 19; z = 0:634). The optical spectrum is a chimera, displaying the broad Mg II 2800 emission line and...
The HST Sample of Radio-Loud Quasars: Emission Lines from (2007)
Beverley Wills Brotherton, Beverley J. Wills, M. S. Brotherton, D. Wills, K. L. Thompson, J. A. Baldwin, ...
g. 1 shows preliminary SPCA results, expanded on the right to show detail. The top panel shows the mean of 48 spectra between Lyff and Hfi. The second panel shows the standard deviation spectrum....
The Intermediate Line Region and the Baldwin Effect (2007)
M. S. Brotherton, Paul J. Francis
. Statistical investigations of samples of quasars have established that clusters of properties are correlated. The strongest trends among the ultraviolet emission-line properties are characterized...
Quasar optical variability and black hole mass (2007)
Wold, M., Brotherton, M. S., Shang, Z.
In order to investigate the dependence of quasar optical-UV variability on fundamental physical parameters like black hole mass, we have matched quasars from the QUEST1 variability survey with...
The dependence of quasar variability on black hole mass (2006)
Wold, M., Brotherton, M. S., Shang, Z.
In order to investigate the dependence of quasar variability on fundamental physical parameters like black hole mass, we have matched quasars from the QUEST1 Variability Survey with broad-lined...
Variation in the Scattering Shroud Surrounding Markarian 231 (2005)
Gallagher, S. C., Schmidt, Gary D., Smith, Paul S., Brandt, W. N., Chartas, G., Hylton, Shavonne, ...
We present a detailed study of the nuclear structure of the highly polarized broad absorption line quasar, Mrk 231, through a multiwavelength campaign of Chandra observations, optical spectroscopy,...
The Black Hole-Bulge Relationship in QSOs (2002)
Shields, G. A., Gebhardt, K., Salviander, S., Wills, B. J., Xie, B., Brotherton, M. S., ...
We use QSO emission-line widths to examine the black hole mass - sigma relationship as a function of redshift and to extend the relationship to larger masses. Supermassive black holes in galactic...
Brotherton, M. S., Green, R. F., Kriss, G. A., Oegerle, W., Kaiser, M. E., Zheng, W., ...
We present far-ultraviolet spectra of the Seyfert 1.5 galaxy NGC 5548 obtained in 2000 June with the Far Ultraviolet Spectroscopic Explorer (FUSE). Our data span the observed wavelength range...
Radio and X-ray bright AGN: the ROSAT - FIRST correlation (2000)
Brinkmann, W, Laurent-Mühleisen, S A, Voges, W, Siebert, J, Becker, R H, Brotherton, M S, ...
Composite Spectra from the FIRST Bright Quasar Survey (2000)
Brotherton, M. S., Tran, Hien D., Becker, R. H., Gregg, Michael D., Laurent-Muehleisen, S. A., White, R. L.
We present a very high signal-to-noise ratio composite spectrum created using 657 radio-selected quasars from the FIRST Bright Quasar Survey. The spectrum spans rest-frame wavelengths 900 - 7500...
Brotherton, M. S., Arav, Nahum, Becker, R. H., Tran, Hien D., Gregg, Michael D., White, R. L. ., ...
We report the discovery of a bright quasar (E=15.8, z=0.868) associated with the flat spectrum radio source NVSS J235953-124148. This quasar we designate QSO 2359-1241 possesses a rare combination of...
Properties of Radio-Selected Broad Absorption-Line Quasars from the FIRST Survey (2000)
Becker, R. H., White, R. L., Gregg, M. D., Brotherton, M. S., Laurent-Meuleisen, S. A., Arav, N.
In a spectroscopic follow-up to the VLA FIRST survey, the FIRST Bright Quasar Survey (FBQS) has found 29 radio-selected broad absorption line (BAL) quasars. This sample provides the first opportunity...
Radio and X-ray bright AGN: the ROSAT - FIRST correlation (2000)
Brinkmann,W., Laurent-Muehleisen,S. A., Voges,W., Siebert,J., Becker,R. H., Brotherton,M. S., ...
Composite Spectra from the FIRST Bright Quasar Survey (2000)
M. S. Brotherton, Hien D. Tran, R. H. Becker, Michael D. Gregg, R. L. White
We present a very high signal-to-noise ratio composite spectrum created using 657 radio-selected quasars from the FIRST Bright Quasar Survey. The spectrum spans rest-frame wavelengths 900 -- 7500 A....
The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later (1999)
White, R. L., Becker, R. H., Gregg, M. D., Laurent-Muehleisen, S. A., Brotherton, M. S., Impey, C. D., ...
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...
A Companion Galaxy to the Post-Starburst Quasar UN J1025-0040 (1999)
Canalizo, Gabriela, Stockton, Alan, Brotherton, M. S., Van Breugel, Wil
UN J1025-0040 is a quasar at z = 0.6344 that shows an extremely bright post starburst population of age ~ 400 Myr (Brotherton et al. 1999). Images of UN J1025-0040 show a nearly stellar object 4.2...
Polarized Narrow-Line Emission from the Nucleus of NGC 4258 (1999)
Barth, A. J., Tran, H. D., Brotherton, M. S., Filippenko, A. V., Ho, L. C., Van Breugel, W., ...
The detection of polarized continuum and line emission from the nucleus of NGC 4258 by Wilkes et al. (1995) provides an intriguing application of the unified model of Seyfert nuclei to a galaxy in...
A Spectacular Post-Starburst Quasar (1999)
Brotherton, M. S., Van Breugel, Wil, Stanford, S. A., Smith, R. J., Boyle, B. J., Miller, Lance, ...
We report the discovery of a spectacular ``post-starburst quasar'' UN J1025-0040 (B=19; z=0.634). The optical spectrum is a chimera, displaying the broad Mg II emission line and strong blue continuum...
The PG X-ray QSO sample: Links between the UV-X-ray Continuum and Emission Lines (1999)
Wills, Beverley J., Brotherton, M. S., Laor, A., Wills, D., Wilkes, B. J., Ferland, G. J., ...
The UV to soft X-rays of luminous AGNs dominate their bolometric luminosity, driven by an accretion-powered dynamo at the center. These photons ionize the surrounding gas, thereby providing clues to...
Discovery of a Radio-loud/Radio-quiet Binary Quasar (1999)
Brotherton, M. S., Gregg, Michael D., Becker, R. H., Laurent-Muehleisen, S. A., White, R. L., Stanford, S. A.
We report the discovery of a small separation quasar pair (z=0.586, O=18.4, 19.2, sep. = 2.3 arcsec) associated with the radio source FIRST J164311.3+315618 (S_1400 = 120 mJy). The spectrum of the...
Tran, Hien D., Brotherton, M. S., Stanford, S. A., Van Breugel, Wil, Dey, A., Stern, D., ...
We have carried out a spectropolarimetric search for hidden broad-line quasars in three ultraluminous infrared galaxies (ULIRGs) discovered in the positional correlations between sources detected in...
Hidden Quasars in Ultraluminous Infrared Galaxies (1998)
Tran, H. D., Brotherton, M. S., Stanford, S. A., Van Breugel, W.
Many ultraluminous infrared galaxies (ULIRGs) are powered by quasars hidden in the center, but many are also powered by starbursts. A simply diagnostic diagram is proposed that can identify obscured...
The Intermediate Line Region and the Baldwin Effect (1998)
Brotherton, M. S., Francis, Paul J.
Statistical investigations of samples of quasars have established that clusters of properties are correlated. The strongest trends among the ultraviolet emission-line properties are characterized by...
The PG X-Ray QSO Sample: Links among X-ray, UV & Optical Spectra (1998)
Wills, Beverley J., Brotherton, M. S., Laor, A., Wills, D., Wilkes, B. J., Ferland, G. J.
A unique, essentially complete sample of 22 QSOs, with high quality soft X-ray spectra from ROSAT, as well as HST and optical spectrophotometry from below Ly-alpha to above H-alpha, is being used to...
Brotherton, M. S., Van Breugel, Wil, Smith, R. J., Boyle, B. J., Shanks, T., Croom, S. M., ...
We report the discovery of five broad-absorption-line (BAL) QSOs in a complete sample of 111 ultraviolet excess (UVX) QSO candidates also detected in the NRAO VLA Sky Survey. All five BAL QSOs, which...
Discovery of an Ultra-Steep Spectrum, Highly Polarized Red Quasar at z = 1.462 (1998)
De Breuck, Carlos, Brotherton, M. S., Tran, Hien D., Van Breugel, Wil, Rottgering, Huub J. A.
We report the discovery of WN J0717+4611, a highly polarized red quasar at z=1.462, selected from a sample of faint (S_{1.4GHz} > 10 mJy) ultra steep spectrum (alpha < -1.3) radio sources. VLA...
Spectropolarimetry of 3CR 68.1: A Highly Inclined Quasar (1998)
Brotherton, M. S., Wills, Beverley J., Dey, Arjun, Van Breugel, Wil, Antonucci, Robert
We present Keck spectropolarimetry of the highly polarized radio-loud quasar 3CR 68.1 (z=1.228, V=19). The polarization increases from 5 in the red (4000 A rest-frame) to >10% in the blue (1900 A...
Spectropolarimetry of FIRST BAL QSOs (1997)
Brotherton, M. S., Tran, Hien D., Van Breugel, Wil, Dey, Arjun, Antonucci, Robert
We present Keck spectropolarimetry of two rare low-ionization broad absorption line (BAL) QSOs, FIRST J084044.5+363328 and FIRST J155633.8+351758, that also exhibit narrow absorption lines from...
Wills, Beverley J., Brotherton, M. S.
QSOs' emission lines arise from highest velocity (approximately 10000 km/s), dense gas within approximately 0.1 parsec of the central engine, out to low-velocity, low-density gas at great distances...
The Profiles of H-Beta and [OIII] 5007 in Radio-Loud Quasars (1995)
Moderate-resolution spectra of the H$\beta$--[O III] $\lambda$5007 region have been obtained for 41 radio-loud quasars in order to investigate relationships among their broad- and narrow-line...
AN IMPROVED MEASURE OF QUASAR ORIENTATION (1995)
Wills, Beverley J., Brotherton, M. S.
Radio core dominance, usually measured by R, the rest frame ratio of core to lobe flux density, has been used as an indicator of Doppler boosting of quasars' radio jets and hence the inclination of...