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
16 papers · 1 filter
WIYN Open Cluster Study. XXXVIII. Stellar Radial Velocities in the Young Open Cluster M35 (NGC 2168)
Aaron M. Geller, Robert D. Mathieu, Ella K. Braden +3
We present 5201 radial-velocity measurements of 1144 stars, as part of an ongoing study of the young (150 Myr) open cluster M35 (NGC 2168). We have observed M35 since 1997, using t…
HST/NICMOS observations of the GLIMPSE9 stellar cluster
Maria Messineo, Donald F. Figer, Ben Davies +4
We present HST/NICMOS photometry, and low-resolution K-band spectra of the GLIMPSE9 stellar cluster. The newly obtained color-magnitude diagram shows a cluster sequence with H-Ks =…
Using 21cm Absorption in Small Impact Parameter Galaxy-QSO Pairs to Probe Low-Redshift Damped and Sub-Damped Lyman-alpha System
Sanchayeeta Borthakur, Todd M. Tripp, Min S. Yun +4
To search for low-redshift damped Lyman-alpha (DLA) and sub-DLA quasar absorbers, we have conducted a 21cm absorption survey of radio-loud quasars at small impact parameters to for…
The Brown Dwarf Kinematics Project (BDKP). II. Details on Nine Wide Common Proper Motion Very Low-Mass Companions to Nearby Stars
Jacqueline K. Faherty, Adam J. Burgasser, Andrew A. West +4
We report on nine wide common proper motion systems containing late-type M, L, or T companions. We confirm six previously reported companions, and identify three new systems. The a…
Photometric observations of selected, optically bright quasars for Space Interferometry Mission and other future celestial reference frames
Roopesh Ojha, Norbert Zacharias, Gregory S. Hennessey +2
Photometric observations of 235 extragalactic objects that are potential targets for the Space Interferometry Mission (SIM) are presented. Mean B, V, R, I magnitudes at the 5% leve…
The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1
S. M. Caballero-Nieves, D. R. Gies, C. T. Bolton +8
We present an examination of high resolution, ultraviolet spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the massive X-ray binary HD 2…
A deep look into the core of young clusters. II. lambda-Orionis
H. Bouy, N. Huelamo, D. Barrado y Navascues +14
Over the past years, the lambda-Orionis cluster has been a prime location for the study of young very low mass stars, substellar and isolated planetary mass objects and the determi…
Fabry-Perot Absorption Line Spectroscopy of the Galactic Bar. II. Stellar Metallicities
Naseem Rangwala, T. B. Williams
We measure the Ca II 8542 line strength in 3360 stars along three lines-of-sight in the Galactic bar: (l,b) ~ (+/-5.0,-3.5) and Baade's Window, using Fabry-Perot (FP) absorption li…
Photometric Variability of the T2.5 Brown Dwarf SIMP J013656.5+093347; Evidence for Evolving Weather Patterns
Étienne Artigau, Sandie Bouchard, René Doyon +1
We report the discovery of a photometric variability in the bright T2.5 brown dwarf SIMP J013656.5+093347. Continuous J-band photometry has been obtained for several hours on four…
The Arecibo Legacy Fast ALFA Survey: VIII. HI Source Catalog of the Anti-Virgo Region at dec = +25 deg
Ann Martin, Riccardo Giovanelli, Martha P. Haynes +4
We present a fourth catalog of HI sources from the Arecibo Legacy Fast ALFA (ALFALFA) Survey. We report 541 detections over 136 deg2, within the region of the sky having 22h < R.A.…
The puzzling dredge-up pattern in NGC 1978
Michael T. Lederer, Thomas Lebzelter, Sergio Cristallo +3
Low-mass stars are element factories that efficiently release their products in the final stages of their evolution by means of stellar winds. Since they are large in number, they…
A Large Sample Study of Red Giants in the Globular Cluster Omega Centauri (NGC 5139)
Christian I. Johnson, Catherine A. Pilachowski, R. Michael Rich +1
We present abundances of several light, alpha, Fe-peak, and neutron-capture elements for 66 red giant branch (RGB) stars in the Galactic globular cluster Omega Centauri. Our observ…
Kinematic Evidence for Halo Substructure in Spiral Galaxies
Kimberly A. Herrmann, Robin Ciardullo, Steinn Sigurdsson
We present the results of a kinematic study of planetary nebulae in the extreme outskirts of two spiral galaxies, M83 (NGC 5236) and M94 (NGC 4736). We find that in the inner regio…
A new way to infer variations of the seismic solar radius
I. Gonzalez Hernandez, P. Scherrer, F. Hill
We show that the mean phase of waves propagating all the way from the far side of the Sun to the front side, as measured by seismic holography, varies with time. The change is high…
WIYN Open Cluster Study. XXIV. Stellar Radial-Velocity Measurements in NGC 6819
K. Tabetha Hole, Aaron M. Geller, Robert D. Mathieu +3
We present the current results from our ongoing radial-velocity survey of the intermediate-age (2.4 Gyr) open cluster NGC 6819. Using both newly observed and other available photom…
The NEWFIRM Medium-Band Survey: Filter Definitions and First Results
Pieter G. van Dokkum, Ivo Labbe, Danilo Marchesini +9
Deep near-infrared imaging surveys allow us to select and study distant galaxies in the rest-frame optical, and have transformed our understanding of the early Universe. As the vas…