Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Harvard UniversityUS3.4k papers
- California Institute of TechnologyUS2.8k papers
- Centre National de la Recherche ScientifiqueFR2.4k papers
- University of California, BerkeleyUS2k papers
- Massachusetts Institute of TechnologyUS2k papers
- University of ArizonaUS1.9k papers
- Goddard Space Flight CenterUS1.6k papers
- Space Telescope Science InstituteUS1.6k papers
- Princeton UniversityUS1.5k papers
- Max Planck Institute for AstronomyDE1.4k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.4k papers
- University of MichiganUS1.3k papers
375 papers · 1 filter
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…
Using Cepheids to determine the galactic abundance gradient I. The solar neighbourhood
S. M. Andrievsky, V. V. Kovtyukh, R. E. Luck +7
A number of studies of abundance gradients in the galactic disk have been performed in recent years. The results obtained are rather disparate: from no detectable gradient to a rat…
Abundances of Deuterium, Oxygen, and Nitrogen in the Local Interstellar Medium: Overview of First Results from the Far Ultraviolet Spectroscopic Explorer Mission
H. W. Moos, K. R. Sembach, A. Vidal-Madjar +33
Observations obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) have been used to determine the column densities of D I, O I, and N I along seven sight lines that prob…
Using Cepheids to determine the galactic abundance gradient II. Towards the galactic center
S. M. Andrievsky, D. Bersier, V. V. Kovtyukh +4
Based on spectra obtained at the Anglo-Australian Observatory, we present a discussion of the metallicity of the galactic disc derived using Cepheids at galactocentric distances 4-…
Massive molecular outflows
H. Beuther, P. Schilke, T. K. Sridharan +3
We present a mapping study of massive molecular outflows in 26 high-mass star-forming regions at 11'' spatial resolution. Bipolar morpholgy is found in 80% of the sources and the c…
Atom correlations and spin squeezing near the Heisenberg limit: finite system size effect and decoherence
A. André, M. D. Lukin
We analyze a model for spin squeezing based on the so-called counter-twisting Hamiltonian, including the effects of dissipation and finite system size. We discuss the conditions un…
Systematic Molecular Differentiation in Starless Cores
M. Tafalla, P. C. Myers, P. Caselli +2
(Abridged) We present evidence that low-mass starless cores, the simplest units of star formation, are systematically differentiated in their chemical composition. Molecules includ…
Shocked molecular gas towards the SNR G359.1-0.5 and the Snake
J. S. Lazendic, M. Wardle, M. G. Burton +4
We have found a bar of shocked molecular hydrogen (H2) towards the OH(1720 MHz) maser located at the projected intersection of supernova remnant (SNR) G359.1-0.5 and the nonthermal…
Mesoscopic molecular ions in Bose-Einstein condensates
Robin Cote, V. Kharchenko, M. D. Lukin
We study the possible formation of large (mesoscopic) molecular ions in an ultracold degenerate bosonic gas doped with charged particles (ions). We show that the polarization poten…
Observational Signatures of the Magnetic Connection between a Black Hole and a Disk
Li-Xin Li
In this Letter we use a simple model to demonstrate the observational signatures of the magnetic connection between a black hole and a disk: (1) With the magnetic connection more e…
A Closer Look at the Soft X-ray Transient X1608-52: Long-term Optical/X-ray Observations
S. Wachter, D. W. Hoard, C. D. Bailyn +2
We report long-term simultaneous optical and (RXTE) X-ray observations of the soft X-ray transient and low mass X-ray binary X1608-52 spanning from 1999 to 2001. In addition to the…
Optical Spectral Monitoring of XTE J1118+480 in Outburst: Evidence for a Precessing Accretion Disk?
M. A. P. Torres, P. J. Callanan, M. R. Garcia +7
We present spectroscopic observations of the X-ray transient XTE J1118+480 acquired during different epochs following the 2000 March outburst. We find that the emission line profil…
A New Way to Detect Massive Black Holes in Galaxies: The Stellar Remnants of Tidal Disruption
R. Di Stefano, J. Greiner, S. Murray +1
We point out that the tidal disruption of a giant may leave a luminous (10^35-10^39 ergs/s), hot (10-100 eV) stellar core. The ``supersoft'' source detected by Chandra at the cente…
X-ray properties of Red Active Galactic Nuclei
Belinda J. Wilkes, Gary D. Schmidt, Roc M. Cutri +4
The Two Micron All Sky Survey (2MASS) is finding previously unidentified, luminous red active galactic nuclei (AGN). This new sample has a space density similar to, or greater than…
The contribution of Quasars to the Far Infrared Background
G. Risaliti, M. Elvis, R. Gilli
Recent observational results obtained with SCUBA, COBE and ISO have greatly improved our knowledge of the infrared and sub-mm background radiation. These limits become constraining…
Most Supermassive Black Holes must be Rapidly Rotating
M. Elvis, G. Risaliti, G. Zamorani
We use the integrated spectrum of the X-ray background and quasars Spectral Energy Distribution to derive the contribution of quasars to the energy output of the Universe. We find…
An ASCA Study of the W51 Complex
Bon-Chul Koo, Jae-Joon Lee, Frederick D. Seward
We present the analysis of ASCA archival data from the Galactic source W51. The ASCA spectra show that the soft (kT<= 2.5 keV) X-rays are of thermal origin and are compatible with…
Spectroscopic binaries in a sample of ROSAT X-ray sources south of the Taurus molecular clouds
Guillermo Torres, Ralph Neuhaeuser, Eike W. Guenther
We report the results of our radial-velocity monitoring of spectroscopic binary systems in a sample of X-ray sources from the ROSAT All Sky Survey south of the Taurus-Auriga star-f…
Search for Molecular Gas in the quasar SDSS 1044-0125 at z=5.73
D. J. Wilner, M. C. H. Wright, J. Di Francesco
We report upper limits on CO J=2--1 and CO J=5--4 emission from the quasar SDSSp J104433.04-012502.2 at z=5.73 from observations made with the Berkeley-Illinois-Maryland-Associatio…
Chandra Observations of the Eastern Limb of the Vela Supernova Remnant
P. P. Plucinsky, R. K Smith, R. J. Edgar +5
We present results from two Chandra/ACIS observations of the so-called Vela ``Bullet D'' region on the eastern limb of the Vela supernova remnant. The Bullet D region is a bright X…
Physical Conditions in Lyman Break Galaxies Derived From Rest-Frame UV Spectra
A. E. Shapley, C. C. Steidel, K. L. Adelberger +1
We present the results of detailed studies of the astrophysical conditions in z~3 Lyman Break Galaxies (LBGs), placing particular emphasis on what is learned from LBG rest frame UV…
A Uniform Analysis of the Ly-alpha Forest at z=0 - 5: V. The extragalactic ionizing background at low redshift
Jennifer Scott, Jill Bechtold, Miwa Morita +2
In Paper III of our series "A Uniform Analysis of the Ly-alpha forest at z=0 - 5", we presented a set of 270 quasar spectra from the archives of the Faint Object Spectrograph on th…
Environs of Bilateral Supernova Remnants with Neutron Stars
G. Dubner, E. Giacani, B. M. Gaensler +2
We report on Australia Telescope Compact Array (ATCA) HI observations carried out in the direction of bilateral supernova remnants (SNRs) with associated neutron stars: G296.5+10.0…
Variability and Spectra of Two Neutron Stars in 47 Tucanae
C. O. Heinke, J. E. Grindlay, D. A. Lloyd +1
We report spectral and variability analysis of two quiescent low mass x-ray binaries (previously identified with ROSAT HRI as X5 and X7) in the globular cluster 47 Tuc, from a Chan…