19.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kitt Peak National ObservatoryUS401 papers
- Cerro Tololo Inter-American ObservatoryCL274 papers
- U.S. National Science FoundationUS162 papers
- Space Telescope Science InstituteUS159 papers
- California Institute of TechnologyUS116 papers
- University of ArizonaUS99 papers
- Center for Astrophysics Harvard & SmithsonianUS80 papers
- Johns Hopkins UniversityUS71 papers
- University of California, BerkeleyUS58 papers
- University of Wisconsin–MadisonUS58 papers
- Carnegie ObservatoriesUS57 papers
- Goddard Space Flight CenterUS56 papers
56 papers · 2 filters
3EG J2016+3657: Confirming an EGRET Blazar Behind the Galactic Plane
J. P. Halpern, M. Eracleous, R. Mukherjee +1
We recently identified the blazar-like radio source G74.87+1.22 (B2013+370) as the counterpart of the high-energy gamma-ray source 3EG J2016+3657 in the Galactic plane. However, si…
A 2MASS L Dwarf Companion to the Nearby K Dwarf GJ 1048
John E. Gizis, J. Davy Kirkpatrick, John C. Wilson
We report the discovery of a probable L1 companion to the nearby K2 dwarf GJ 1048 using the Two Micron All-Sky Survey (2MASS). This source, 2MASSI J0235599-233120 or GJ 1048B, has…
Continuum Variability of Active Galactic Nuclei in the Optical-UV Range
Dario Trevese, Richard G. Kron, Alessandro Bunone
The variability of the continuum spectral energy distribution has been analyzed for a complete magnitude-limited sample of quasars in Selected Area 57, observed at two epochs in th…
A Search for Wolf-Rayet Stars in the Small Magellanic Cloud
Phil Massey, Alaine Duffy
We conducted an extensive search for Wolf-Rayet stars (W-Rs) in the SMC, using the same interference filter imaging techniques that have proved successful in finding W-Rs in more d…
Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements
P. Bergeron, S. K. Leggett, Maria Teresa Ruiz
A photometric and spectroscopic analysis of 152 cool white dwarf stars is presented. The discovery of 7 new DA white dwarfs, 2 new DQ white dwarfs, 1 new magnetic white dwarf, and…
The Discovery of a Giant H-alpha Filament in NGC 7213
Salman Hameed, David Blank, Lisa Young +1
The nearby Seyfert galaxy NGC 7213 has been imaged in H-alpha and HI with the CTIO 1.5 m telescope and with the Australia Telescope Compact Array (ATCA), respectively. Optically NG…
Starbursts versus Truncated Star Formation in Nearby Clusters of Galaxies
James A. Rose, Alejandro E. Gaba, Nelson Caldwell +1
We present long-slit spectroscopy, B and R bandpass imaging, and 21 cm observations of a sample of early-type galaxies in nearby clusters which are known to be either in a star-for…
The Edge of the Solar System
R. Lynne Allen, Gary Bernstein, Renu Malhotra
The population of the Kuiper Belt within 50 AU of the Sun has likely been severely depleted by gravitational perturbations from the giant planets, particularly Neptune. The density…
Stars of the Draco Dwarf Spheroidal Galaxy Beyond its Measured Tidal Boundary
Slawomir Piatek, Carlton Pryor, Taft E. Armandroff +1
We report R- and V-band photometry derived from CCD imaging for objects in nine fields in and around the Draco dwarf spheroidal galaxy. The most distant fields are about 1.3 degree…
The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turn-offs. II. Results from 12 Galactic Clusters and OB Associations
P. Massey, K. DeGioia-Eastwood, E. Waterhouse
Here we examine 12 Galactic clusters and OB associations containing Wolf-Rayet stars (W-Rs) and/or Luminous Blue Variables (LBVs), in order to assess the progentor masses of these…
The KPNO International Spectroscopic Survey. II. H-alpha Selected Survey List 1
J. J. Salzer, C. Gronwall, V. A. Lipovetsky +7
The KPNO International Spectroscopic Survey (KISS) is a new objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless sp…
CCD Photometry of the Globlular Cluster NGC 5986 and its Post-Asymptotic-Giant-Branch and RR Lyrae Stars
D. R. Alves, H. E. Bond, C. Onken
We have obtained new CCD BV photometry of the little-studied southern Galactic globular cluster NGC 5986, including light curves of 5 of its RR Lyrae variables. The cluster's red g…
The Dwarf Galaxy Population of the Dorado group down to Mv=-11
E. R. Carrasco, C. M. de Oliveira, Leopoldo Infante +1
We present V and I CCD photometry of suspected low-surface brightness dwarf galaxies detected in a survey covering ~2.4 deg^2 around the central region of the Dorado group of galax…
Weak Lensing Determination of the Mass in Galaxy Halos
D. R. Smith, G. M. Bernstein, P. Fischer +1
We detect the weak gravitational lensing distortion of 450,000 background galaxies (20<R<23) by 790 foreground galaxies (R<18) selected from the Las Campanas Redshift Survey (LCRS)…
The Globular Cluster System in the Outer Regions of NGC 4472
K. L. Rhode, S. E. Zepf
We have undertaken a study of the globular cluster (GC) systems of a large sample of elliptical and spiral galaxies in order to test predictions of galaxy formation models. Here we…
CCD Photometry of the Globular Cluster NGC 4833 and Extinction Near the Galactic Plane
Jason Melbourne, Ata Sarajedini, Andrew Layden +1
We present CCD photometry for the Galactic globular cluster NGC 4833. Our BVI color magnitude diagrams (CMD) extend from above the red giant branch (RGB) tip to several magnitudes…
Irradiated Herbig-Haro Jets in the Orion Nebula and Near NGC 1333
John Bally, Bo Reipurth
We report the discovery of a dozen Herbig-Haro jets illuminated by the Lyman continuum and/or softer far-ultraviolet radiation fields of nearby high mass stars. Five irradiated out…
A Critical Examination of Hypernova Remnant Candidates in M101. I. MF83
Shih-Ping Lai, You-Hua Chu, C. H. Rosie Chen +2
The SNR candidate MF83 in M101 is coincident with a very luminous X-ray source. Based on the high X-ray luminosity, it has been suggested that MF83 is a "hypernova remnant" requiri…
Maximum Disk Mass Models for Spiral Galaxies
Povilas Palunas, T. B. Williams
We present axisymmetric maximum disk mass models for a sample of 74 spiral galaxies taken from the southern sky Fabry-Perot Tully-Fisher survey (Schommer et al. 1993). The sample c…
Red Quasars and Quasar Evolution: the Case of BALQSO FIRST J155633.8+351758
Joan Najita, Arjun Dey, Michael Brotherton
We present the first near-IR spectroscopy of the z=1.5 radio-loud BALQSO FIRST J155633.8+351758. Both the Balmer decrement and the slope of the rest-frame UV-optical continuum inde…
Is it Round? Spectropolarimetry of the Type II-P Supernova 1999em
Douglas C. Leonard, Alexei V. Filippenko, David R. Ardila +1
We present the first multi-epoch spectropolarimetry of a type II plateau supernova (SN II-P), with optical observations of SN 1999em on days 7, 40, 49, 159, and 163 after discovery…
Absolute dimensions of the unevolved B-type eclipsing binary GG Orionis
G. Torres, C. H. S. Lacy, A. Claret +1
We present photometric observations in B and V as well as spectroscopic observations of the detached, eccentric 6.6-day double-lined eclipsing binary GG Ori, a member of the Orion…
QSO 2359-1241: A Bright, Highly Polarized, Radio-Moderate, Reddened, Low-Ionization Broad Absorption Line Quasar
M. S. Brotherton, Nahum Arav, R. H. Becker +5
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…
Mira's wind explored in scattering infrared CO lines
N. Ryde, B. Gustafsson, K. Eriksson +1
We have observed the intermediate regions of the circumstellar envelope of Mira (o Ceti) in photospheric light scattered by three vibration-rotation transitions of the fundamental…