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
5 papers · 2 filters
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…
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 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.…
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…
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…