Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS2.6k papers
- Centre National de la Recherche ScientifiqueFR2k papers
- Massachusetts Institute of TechnologyUS1.9k papers
- University of FloridaUS1.8k papers
- Carnegie Mellon UniversityUS1.7k papers
- Princeton UniversityUS1.7k papers
- University of RochesterUS1.7k papers
- Purdue University West LafayetteUS1.6k papers
- Johns Hopkins UniversityUS1.6k papers
- University of Maryland, College ParkUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- University of California, Santa BarbaraUS1.6k papers
54 papers · 2 filters
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…
Optical Seeing and Infrared Atmospheric Transparency in the Upper Atacama Desert
Riccardo Giovanelli
With plans to build a large IR/optical telescope in the Atacama Desert, a site survey campaign has been underway since 1998 to characterize the optical seeing and the IR transparen…
Asymmetry in Isolated, Morphologically Normal Sa Galaxies
David A. Kornreich, Martha P. Haynes, Katherine P. Jore +1
We have examined the morphological and dynamical HI symmetry properties of a sample of moderately inclined Sa galaxies which are classified as morphologically normal. The sample ga…
Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent
Daniel A. Dale, Riccardo Giovanelli, Martha P. Haynes +2
The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spi…
Neutron Star Kicks and Asymmetric Supernovae
Dong Lai
Observational advances over the last decade have left little doubt that neutron stars received a large kick velocity (of order a few hundred to a thousand km/s) at birth. The physi…
Precession of Magnetically Driven Warped Disks and Low-Frequency QPOs in Low-Mass X-Ray Binaries
Akiko Shirakawa, Dong Lai
An accretion disk around a rotating magnetized star is subjected to magnetic torques which induce disk warping and precession. These torques arise from interactions between the ste…
Sharp HI edges at high z: the gas distribution from Damped Lyman-alpha to Lyman-limit absorption systems
Edvige Corbelli, Edwin E. Salpeter, Rino Bandiera
We derive the distribution of neutral and ionized gas in high redshift clouds which are optically thick to hydrogen ionizing radiation, using published data on Lyman-limit and Damp…
Three modes of long wavelength flaring from GRS 1915+105: implications for jet formation
Stephen Eikenberry
GRS 1915+105 has exhibited at least three modes of long-wavelength (infrared to radio) flares. Class A flares are the bright ( Jy) radio events whose apparent superluminal…
CORMASS: A Compact and Efficient NIR Spectrograph for Studying Low-Mass Objects
J. C. Wilson, M. F. Skrutskie, M. R. Colonno +6
CorMASS (Cornell Massachusetts Slit Spectrograph) is a compact, low-resolution (R=300), double-pass prism cross-dispersed near-infrared (NIR) spectrograph in operation on the Palom…
Extended [C I] and ^{13}CO(5-4) Emission in M17SW
J. E. Howe, M. L. N. Ashby, E. A. Bergin +19
We mapped a 13 by 22 pc region in emission from 492 GHz [C I] and, for the first time, 551 GHz ^{13}CO(5-4) in the giant molecular cloud M17SW, using the Submillimeter Wave Astrono…
Water Abundance in Molecular Cloud Cores
R. L. Snell, J. E. Howe, M. L. N. Ashby +17
We present Submillimeter Wave Astronomy Satellite (SWAS) observations of the 1_{10}-1_{01} transition of ortho-water at 557 GHz toward 12 molecular cloud cores. The water emission…
The Distribution of Water Emission in M17SW
R. L. Snell, J. E. Howe, M. L. N. Ashby +17
We present a 17-point map of the M17SW cloud core in the 1_{10}-1_{01} transition of ortho-water at 557 GHz obtained with the Submillimeter Wave Astronomy Satellite. Water emission…
Submillimeter Wave Astronomy Satellite Observations of Extended Water Emission in Orion
R. L. Snell, J. E. Howe, M. L. N. Ashby +17
We have used the Submillimeter Wave Astronomy Satellite to map the ground-state 1_{10}-1_{01} transition of ortho-water at 557 GHz in the Orion molecular cloud. Water emission was…
A Binary Millisecond Pulsar in Globular Cluster NGC6544
Scott M. Ransom, Lincoln J. Greenhill, James R. Herrnstein +4
We report the detection of a new 3.06 ms binary pulsar in the globular cluster NGC6544 using a Fourier-domain ``acceleration'' search. With an implied companion mass of ~0.01 solar…
First Detection of CO in a Low Surface Brightness Galaxy
K. O'Neil, P. Hofner, E. Schinnerer
We report on the first attempts at searching for CO in red low surface brightness galaxies, and the first detection of molecular gas in a low surface brightness (mu_B(0)_{obs} > 23…
On the Mass-Donating Star in GRS 1915+105
Stephen S. Eikenberry, Reba M. Bandyopadhyay
We present an analysis of constraints on the companion mass for the Galactic microquasar GRS 1915+105. Using the known inclination angle and stability of the jet axis, we can rule…
Parallax and Kinematics of PSR B0919+06 from VLBA Astrometry and Interstellar Scintillometry
S. Chatterjee, J. M. Cordes, T. J. W. Lazio +3
Results are presented from a long-term astrometry program on PSR B0919+06 using the NRAO Very Long Baseline Array. With ten observations (seven epochs) between 1994--2000, we measu…
Faint Scattering Around Pulsars: Probing the Interstellar Medium on Solar System Size Scales
D. R. Stinebring, M. A. McLaughlin, J. M. Cordes +5
We have made high-resolution, high-sensitivity dynamic spectra of a sample of strong pulsars at 430 MHz with the Arecibo radiotelescope. For 4 pulsars we find faint but sharply del…
Upper Limits On Periodic, Pulsed Radio Emission from the X-Ray Point Source in Cassiopeia A
M. A. McLaughlin, J. M. Cordes, A. A. Deshpande +4
The Chandra X-ray Observatory recently discovered an X-ray point source near the center of Cassiopeia A, the youngest known Galactic supernova remnant. We have conducted a sensitiv…
Radio observations of the 33.8 ms X-ray pulsar SAX J0635+0533
L. Nicastro, B. M. Gaensler, M. A. McLaughlin
The hard X-ray source SAX J0635+0533 shows pulsations at a period of 33.8 ms and is thought to be associated with a bright Be star. We here report on radio observations towards thi…
Matter in Strong Magnetic Fields
Dong Lai
The properties of matter are significantly modified by strong magnetic fields, Gauss (), as are typically found on the surfaces of neutron…
What is the behavior of the ISM in the SMC?
S. Stanimirovic
We describe quantitatively the neutral hydrogen (HI) and dust content of the interstellar medium (ISM) in the Small Magellanic Cloud (SMC), using the spatial power spectrum. The ve…
New Pulsars from an Arecibo Drift Scan Search
Andrea N. Lommen, Alex Zepka, Donald C. Backer +4
We report the discovery of pulsars J0030+0451, J0711+0931, and J1313+0931 that were found in a search of 470 square degrees at 430 MHz using the 305m Arecibo telescope. The search…
The HI Content of Spirals. II. Gas Deficiency in Cluster Galaxies
Jose M. Solanes, Alberto Manrique, Carlos Garcia-Gomez +3
We derive the atomic hydrogen content for a total of 1900 spirals in the fields of eighteen nearby clusters. By comparing the HI deficiency distributions of the galaxies inside of…