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
57 papers · 2 filters
557 GHz Observations of Water Vapor Outflows from VY CMa and W Hydrae
Martin Harwit, Edwin A. Bergin
We report the first detection of thermal water vapor emission in the 557 GHz, ground state transition of ortho-HO toward VY Canis Majoris. In observations obt…
Artifacts at 4.5 and 8.0 um in Short Wavelength Spectra from the Infrared Space Observatory
Stephan D. Price, G. C. Sloan, Kathleen E. Kraemer
Spectra from the Short Wavelength Spectrometer (SWS) on ISO exhibit artifacts at 4.5 and 8 um. These artifacts appear in spectra from a recent data release, OLP 10.0, as spurious b…
Search for high-frequency periodicities in time-tagged event data from gamma ray bursts and soft gamma repeaters
Adam T. Kruger, Thomas J. Loredo, Ira Wasserman
We analyze the Time-Tagged Event (TTE) data from observations of gamma ray bursts (GRBs) and soft gamma repeaters (SGRs) by the Burst and Transient Source Experiment (BATSE). These…
Resolving the compact HII regions in N160A with HST
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +4
Using high-resolution imaging with the Hubble Space Telescope, we study the Large Magellanic Cloud HII region N160A and uncover several striking features of this complex massive st…
Possible Infrared Counterparts to the Soft Gamma-Ray Repeater SGR 1806-20
S. S. Eikenberry, M. A. Garske, D. Hu +5
We report the discovery of possible infrared counterparts to SGR 1806-20. We use archival {\it Chandra} observations to determine the location of SGR 1806-20 to $<1 \arcsec$ accura…
Broad and shifted iron-group emission lines in gamma-ray bursts as tests of the hypernova scenario
G. C. McLaughlin, R. A. M. J. Wijers, G. E. Brown +1
In the hypernova/collapsar model of gamma-ray bursts, it is natural that radiation is emitted by the inner engine for some time after the burst. This has been discussed as a possib…
STIS spectroscopy of newborn massive stars in SMC N81
M. Heydari-Malayeri, M. R. Rosa, D. Schaerer +2
Using Hubble Space Telescope observations with STIS, we study the main exciting stars of N81, a high excitation compact Hii region in the Small Magellanic Cloud (SMC). These far UV…
Magnetically Driven Precession of Warped Disks and Milli-Hertz Variabilities in Accreting X-Ray Pulsars
Akiko Shirakawa, Dong Lai
The inner region of the accretion disk around a magnetized neutron star is subjected to magnetic torques that induce warping and precession of the disk. These torques arise from in…
Analysis of the First Disk-Resolved Images of Ceres from Ultraviolet Observations with the Hubble Space Telescope
Joel Wm. Parker, S. Alan Stern, Peter C. Thomas +5
We present HST Faint Object Camera observations of the asteroid 1 Ceres at near-, mid-, and far-UV wavelengths (lambda = 3636, 2795, and 1621 A, respectively) obtained on 1995 June…
Did VV~29 collide with a dark Dark-Matter halo?
F. H. Briggs, O. Moller, J. L. Higdon +2
Westerbork Radio Synthesis Telescope observation of the galaxy VV29=Arp188=UGC10214 shows that there are at least three distinct dynamical components whose kinematics can be traced…
Mid-IR and CO Observations of the IR/X-Ray Luminous Seyfert I Galaxy NGC985: The Making or Breaking of a ULIRG?
P. N. Appleton, V. Charmandaris, Y. Gao +4
We describe ISO and BIMA observations of the z=0.04 Seyfert 1 ring galaxy NGC985 which suggest close parallels with some quasar host galaxies. NGC985 contains two closely spaced nu…
The small-scale structure of the Magellanic Stream
Snezana Stanimirovic, John M. Dickey, Alyson M. Brooks
We have mapped in neutral hydrogen (HI) two regions at the northern tip of the Magellanic Stream, known as MS V and MS VI, using the Arecibo telescope. The small-scale structure of…
The Infrared Continuum Spectrum of VY CMa
Martin Harwit, Koen Malfait, Leen Decin +3
We combine spectra of VY CMa obtained with the short- and long-wavelength spectrometers, SWS and LWS, on the Infrared Space Observatory to provide a first detailed continuum spectr…
The Optical Luminosity Function of Virialized Systems
Christian Marinoni, Michael J. Hudson, Giuliano Giuricin
We determine the optical luminosity function of virialized systems over the full range of density enhancements, from single galaxies to clusters of galaxies. The analysis is based…
The youngest massive star clusters in the Magellanic Clouds
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +3
High resolution observations with HST have recently allowed us to resolve and study several very tight clusters of newly born massive stars in the Magellanic Clouds. Situated in an…
First Results from the COLA Project- the Radio-FIR Correlation and Compact Radio Cores in Southern COLA Galaxies
E. A. Corbett, R. P. Norris, C. A. Heisler +5
We present the first results from the COLA (Compact Objects in Low-power AGN) project which aims to determine the relationship between one facet of AGN activity, the compact radio…
Abundant Molecular Gas in Tidal Dwarf Galaxies: On-going Galaxy Formation
J. Braine, P. -A. Duc, U. Lisenfeld +4
[Abridged...] We investigate the process of galaxy formation as can be observed in the only currently forming galaxies -- the so-called Tidal Dwarf Galaxies, hereafter TDGs -- thro…
Three Wide-Separation L dwarf Companions from the Two Micron All Sky Survey: Gl 337C, Gl 618.1B, and HD 89744B
J. C. Wilson, J. Davy Kirkpatrick, J. E. Gizis +3
We present two confirmed wide separation L-dwarf common proper motion companions to nearby stars and one candidate identified from the Two Micron All Sky Survey. Spectral types fro…
Resonant Conversion of Photon Modes Due to Vacuum Polarization in a Magnetized Plasma: Implications for X-Ray Emission from Magnetars
Dong Lai, Wynn C. G. Ho
It is known that vacuum polarization can modify the photon propagation modes in the atmospheric plasma of a strongly magnetized neutron star. A resonance occurs when the effect of…
The Fine Structure and Outskirts of DDO 154
G. Lyle Hoffman, E. E. Salpeter, Nathan J. Carle
Mapping of the HI disk of the isolated irregular galaxy DDO 154 with the C array of the Very Large Array and with the 3.2' upgraded Arecibo beam is presented. Our results show a tr…
Magnetic Helix Formation Driven by Keplerian Disk Rotation in an External Plasma Pressure --- The Initial Expansion Stage
H. Li, R. V. E. Lovelace, J. M. Finn +1
We study the evolution of a magnetic arcade that is anchored to an accretion disk and is sheared by the differential rotation of a Keplerian disk. By including an extremely low ext…
Atomic and molecular gas in the merger galaxy NGC 1316 (Fornax A) and its environment
C. Horellou, J. H. Black, J. H. van Gorkom +3
We present and interpret observations of atomic and molecular gas toward the southern elliptical galaxy NGC 1316 (Fornax A), a strong double-lobe radio source with a disturbed opti…
Star Formation in M51 Triggered by Galaxy Interaction
T. Nikola, N. Geis, F. Herrmann +4
We have mapped the inner 360'' regions of M51 in the 158micron [CII] line at 55'' spatial resolution using the Far-infrared Imaging Fabry-Perot Interferometer (FIFI) on the Kuiper…
Twenty Years of Timing SS433
S. S. Eikenberry, P. B. Cameron, B. W. Fierce +4
We present observations of the optical ``moving lines'' in spectra of the Galactic relativistic jet source SS433 spread over a twenty year baseline from 1979 to 1999. The red/blue-…