508 citations · 4.6k across the 83 of their papers we have counts for
24 papers · 1 filter
Spectrophotometry with Hectospec, the MMT's Fiber-Fed Spectrograph
Daniel G. Fabricant, Michael J. Kurtz, Margaret J. Geller +2
We describe techniques for photometric calibration of optical spectra obtained with the MMT's fiber-fed spectrograph, Hectospec. The atmospheric dispersion compensation prisms buil…
The Century Survey Galactic Halo Project III: A Complete 4300 deg^2 Survey of Blue Horizontal Branch Stars in the Metal-Weak Thick Disk and Inner Halo
Warren R. Brown, Timothy C. Beers, Ronald Wilhelm +4
We present a complete spectroscopic survey of 2414 2MASS-selected blue horizontal branch (BHB) candidates selected over 4300 deg^2 of the sky. We identify 655 BHB stars in this non…
Hypervelocity Stars III. The Space Density and Ejection History of Main Sequence Stars from the Galactic Center
Warren R. Brown, Margaret J. Geller, Scott J. Kenyon +2
We report the discovery of 3 new unbound hypervelocity stars (HVSs), stars traveling with such extreme velocities that dynamical ejection from a massive black hole (MBH) is their o…
--PhotoZ: Photometric Redshifts by Inverting the Tolman Surface Brightness Test
Michael J. Kurtz, Margaret J. Geller, Daniel G. Fabricant +2
Surface brightness is a fundamental observational parameter of galaxies. We show, for the first time in detail, how it can be used to obtain photometric redshifts for galaxies, the…
Hypervelocity Stars II. The Bound Population
Warren R. Brown, Margaret J. Geller, Scott J. Kenyon +2
Hypervelocity stars (HVSs) are stars ejected completely out of the Milky Way by three-body interactions with the massive black hole in the Galactic center. We describe 643 new spec…
The Future of Technical Libraries
Michael J. Kurtz, Guenther Eichhorn, Alberto Accomazzi +5
Technical libraries are currently experiencing very rapid change. In the near future their mission will change, their physical nature will change, and the skills of their employees…
Hectospec, the MMT's 300 Optical Fiber-Fed Spectrograph
Daniel Fabricant, Robert Fata, John Roll +6
The Hectospec is a 300 optical fiber fed spectrograph commissioned at the MMT in the spring of 2004. A pair of high-speed six-axis robots move the 300 fiber buttons between observi…
CAIRNS: The Cluster And Infall Region Nearby Survey III. Environmental Dependence of H-alpha Properties of Galaxies
Kenneth Rines, Margaret J. Geller, Michael J. Kurtz +1
We investigate the environmental dependence of star formation in cluster virial regions and infall regions as part of CAIRNS (Cluster And Infall Region Nearby Survey), a large spec…
The Century Survey Galactic Halo Project II: Global Properties and the Luminosity Function of Field Blue Horizontal Branch Stars
Warren R. Brown, Margaret J. Geller, Scott J. Kenyon +4
We discuss a 175 deg^2 spectroscopic survey for blue horizontal branch (BHB) stars in the Galactic halo. We use the Two Micron All Sky Survey (2MASS) and the Sloan Digital Sky Surv…
CAIRNS: The Cluster And Infall Region Nearby Survey II. Environmental Dependence of Infrared Mass-to-Light Ratios
K. Rines, M. J. Geller, A. Diaferio +2
CAIRNS (Cluster And Infall Region Nearby Survey) is a spectroscopic survey of the infall regions surrounding nine nearby rich clusters of galaxies. In Paper I, we used redshifts wi…
CAIRNS: The Cluster And Infall Region Nearby Survey I. Redshifts and Mass Profiles
K. Rines, M. J. Geller, M. J. Kurtz +1
The CAIRNS (Cluster And Infall Region Nearby Survey) project is a spectroscopic survey of the infall regions surrounding eight nearby, rich, X-ray luminous clusters of galaxies. We…
Infrared Mass-to-Light Profile Throughout the Infall Region of the Coma Cluster
K. Rines, M. J. Geller, M. J. Kurtz +3
Using a redshift survey of 1779 galaxies and photometry from the 2-Micron All-Sky Survey (2MASS) covering 200 square degrees, we calculate independent mass and light profiles for t…
Redshifts for 2410 Galaxies in the Century Survey Region
G. Wegner, J. R. Thorstensen, M. J. Kurtz +6
The `Century Survey' strip covers 102 square degrees within the limits 8.5h \leq α_{1950} \leq 16.5h, 29.0 degrees \leq δ_{1950} \leq 30.0 degrees. The strip passes through the Cor…
V and R-band Galaxy Luminosity Functions and Low Surface Brightness Galaxies in the Century Survey
Warren R. Brown, Margaret J. Geller, Daniel G. Fabricant +1
We use 64 square degrees of deep V and R CCD images to measure the local V and R band luminosity function of galaxies. The V_0<16.7 and R_0<16.2 redshift samples contain 1250 galax…
Rotation Curve Measurement using Cross-Correlation
Elizabeth J. Barton, Sheila J. Kannappan, Michael J. Kurtz +1
Longslit spectroscopy is entering an era of increased spatial and spectral resolution and increased sample size. Improved instruments reveal complex velocity structure that cannot…
Eigenvector Sky Subtraction
Michael J. Kurtz, Douglas J. Mink
We develop a new method for estimating and removing the spectrum of the sky from deep spectroscopic observations; our method does not rely on simultaneous measurement of the sky sp…
The NASA Astrophysics Data System: Architecture
A. Accomazzi, G. Eichhorn, M. J. Kurtz +2
The powerful discovery capabilities available in the ADS bibliographic services are possible thanks to the design of a flexible search and retrieval system based on a relational da…
The NASA Astrophysics Data System: Overview
M. J. Kurtz, G. Eichhorn, A. Accomazzi +3
The NASA Astrophysics Data System Abstract Service has become a key component of astronomical research. It provides bibliographic information daily, or near daily, to a majority of…
The NASA Astrophysics Data System: Data Holdings
C. Grant, A. Accomazzi, G. Eichhorn +2
Since its inception in 1993, the ADS Abstract Service has become an indispensable research tool for astronomers and astrophysicists worldwide. In those seven years, much effort has…
The Updated Zwicky Catalog (UZC)
Emilio E. Falco, Michael J. Kurtz, Margaret J. Geller +6
The Zwicky Catalog of galaxies (ZC), with m_Zw<=15.5mag, has been the basis for the Center for Astrophysics (CfA) redshift surveys. To date, analyses of the ZC and redshift surveys…
The Mass Profile of the Coma Galaxy Cluster
M. J. Geller, Antonaldo Diaferio, M. J. Kurtz
We use a new redshift survey complete to m_R=15.4 within 4.25 deg from the center of the Coma cluster to measure the mass profile of the cluster to r=5.5 Mpc/h. We extend the profi…
The Southern Sky Redshift Survey
L. Nicolaci da Costa, C. N. A. Willmer, P. S. Pellegrini +11
We report redshifts, magnitudes and morphological classifications for 5369 galaxies with and 57 galaxies fainter than this limit, in two regions covering a total of…
RVSAO 2.0: Digital Redshifts and Radial Velocities
Michael J. Kurtz, Douglas J. Mink
RVSAO is a set of programs to obtain redshifts and radial velocities from digital spectra. RVSAO operates in the IRAF(Tody 1986, 1993) environment. The heart of the system is xcsao…
A Medium-Deep Survey of a Mini-Slice at the North Galactic Pole. II. The Data
C. N. A. Willmer, D. C. Koo, N. ELlman +2
We report 328 redshifts, b magnitudes and b--r colors of galaxies measured in a redshift survey of a 4 0.67 slice close to the north Galactic p…