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
430 papers · 1 filter
Nucleosynthesis in The Oxygen-Rich Supernova Remnant G292.0+1.8 from Chandra X-Ray Spectroscopy
Sangwook Park, John P. Hughes, Patrick O. Slane +4
We continue our analysis of the Galactic oxygen-rich supernova remnant (SNR) G292.0+1.8, which was observed with the {\it Chandra X-ray Observatory}. The high angular resolution {\…
Color Effects Associated with the 1999 Microlensing Brightness Peaks in Gravitationally Lensed Quasar Q2237+0305
V. G. Vakulik, R. E. Schild, V. N. Dudinov +9
Photometry of the Q2237+0305gravitational lens in VRI spectral bands with the 1.5-m telescope of the high-altitude Maidanak observatory in 1995-2000 is presented. Monitoring of Q22…
The History of the Mysterious Eclipses of KH 15D: Asiago Observatory, 1967-1982
John A. Johnson, Joshua N. Winn
We are gathering archival observations to determine the photometric history of the unique and unexplained eclipses of the pre-main-sequence star KH 15D. Here we present a light cur…
Mass Transfer between Double White Dwarfs
T. R. Marsh, G. Nelemans, D. Steeghs
Three periodically variable stars have recently been discovered (V407 Vul, P=9.5 min; ES Cet, P=10.3 min; RX J0806.3+1527, P=5.3 min) with properties that suggest that their photom…
Displacement of X-Ray Sources from Star Clusters in Starburst Galaxies
P. Kaaret, A. Alonso-Herrero, J. S. Gallagher +3
We examine the spatial offsets between X-ray point sources and star clusters in three starburst galaxies. We find that the X-ray sources are preferentially located near the star cl…
Simultaneous Measurement of Rock Permeability and Effective Porosity using Laser-Polarized Noble Gas NMR
R. Wang, R. W. Mair, M. S. Rosen +2
We report simultaneous measurements of the permeability and effective porosity of oil-reservoir rock cores using one-dimensional NMR imaging of the penetrating flow of laser-polari…
An XMM-Newton view of M101: I. The luminous X-ray source population
L. P. Jenkins, T. P. Roberts, R. S. Warwick +2
We present the first results of an XMM-Newton EPIC observation of the luminous X-ray source population in the supergiant spiral galaxy M101. We have studied the properties of the f…
Large-Scale Structure Shocks at Low and High Redshifts
Steven Furlanetto, Abraham Loeb
Cosmological simulations show that, at the present time, a substantial fraction of the gas in the intergalactic medium (IGM) has been shock-heated to T>10^5 K. Here we develop an a…
The Ionized Gas in Local Starburst Galaxies: Global and Small--Scale Feedback from Star Formation
Daniela Calzetti, Jason Harris, John S. Gallagher +4
Abridged: The small-- and intermediate--scale structure and the fraction of the ISM ionized by non--radiative processes is investigated in a small sample of four local starburst ga…
An Error Analysis of the Geometric Baade-Wesselink Method
Massimo Marengo, Margarita Karovska, Dimitar D. Sasselov +1
We derive an analytic solution for the minimization problem in the geometric Baade-Wesselink method. This solution allows deriving the distance and mean radius of a pulsating star…
Determining Accurate Distances to Nearby Galaxies
Alceste Bonanos
We have undertaken several projects with the purpose of determining accurate distances to nearby galaxies to calibrate the extragalactic distance scale. Specifically, I describe th…
Weak lensing mass reconstruction of the interacting cluster 1E0657-558: Direct evidence for the existence of dark matter
Douglas Clowe, Anthony Gonzalez, Maxim Markevitch
We present a weak lensing mass reconstruction of the interacting cluster 1E0657-558 in which we detect both the main cluster and a sub-cluster. The sub-cluster is identified as a s…
XMM-Newton and Chandra observations of three X-ray faint early-type galaxies
E. O'Sullivan, T. J. Ponman
We present XMM-Newton observations of three X-ray under-luminous elliptical galaxies, NGC 3585, NGC 4494 and NGC 5322. All three galaxies have relatively large optical luminosities…
L1157: Interaction of the molecular outflow with the Class~0 environment
M. T. Beltran, F. Gueth, S. Guilloteau +1
We present high angular resolution interferometric observations of the dust continuum at 2.7 and 1.3 mm, and of the HC3N (12-11) and C18O (2-1) emission around L1157-mm, a Class~0…
Cepheid distances from infrared long-baseline interferometry - I. VINCI/VLTI observations of seven Galactic Cepheids
P. Kervella, N. Nardetto, D. Bersier +2
We report the angular diameter measurements of seven classical Cepheids (X Sgr, eta Aql, W Sgr, zeta Gem, beta Dor, Y Oph and L Car) that we have obtained with the VINCI instrument…
The central image of a gravitationally lensed quasar
Joshua N. Winn, David Rusin, Christopher S. Kochanek
A galaxy can act as a gravitational lens, producing multiple images of a background object. Theory predicts there should be an odd number of images but, paradoxically, almost all o…
Doppler tomography of accretion in binaries
D. Steeghs
Since its conception, Doppler tomography has matured into a versatile and widely used tool. It exploits the information contained in the highly-structured spectral line-profiles ty…
Combining Astrometry and Spectroscopy
Guillermo Torres
Orbital solutions for binary or multiple stellar systems that combine astrometry (e.g., position angles and angular separations) with spectroscopy (radial velocities) have importan…
Searching for Planets in the Hyades III: The Quest for Short-Period Planets
D. Paulson, S. Saar, W. Cochran +1
We have been using the Keck I High Resolution Spectrograph (HIRES) to search for planetary companions in the Hyades cluster. We selected four stars from this sample which showed si…
A young and complex binary star - HD 144432
M. R. Pérez, M. E. van den Ancker, D. de Winter +1
The southern emission-line star HD 144432 has received considerable attention due to its relative brightness (V ~ 8.17), its late spectral type (late A-type or perhaps early F) and…
Survey for Transiting Extrasolar Planets in Stellar Systems: I. Fundamental Parameters of the Open Cluster NGC 1245
Christopher J. Burke, B. Scott Gaudi, D. L. DePoy +2
We derive fundamental parameters for the old, rich open cluster NGC 1245 using BVI photometry from the MDM 1.3m and 2.4m telescopes. Based on detailed isochrone fitting, we find NG…
Detection of Gravitational Waves from the Coalescence of Population-III Remnants with Advanced LIGO
Stuart Wyithe, Abraham Loeb
The comoving mass density of massive black hole (MBH) remnants from pre-galactic star formation could have been similar in magnitude to the mass-density of supermassive black holes…
Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere
A. Lobel, J. Aufdenberg, A. K. Dupree +3
We present spatially resolved spectra observed with HST-STIS of the upper chromosphere and dust envelope of Alpha Orionis (M2 Iab). In the fall of 2002 a set of five high-resolutio…
Spectroscopy of the Millennium Outburst and Recent Variability of the Yellow Hypergiant Rho Cassiopeiae
A. Lobel, R. P. Stefanik, G. Torres +3
In the summer and fall of 2000 the yellow hypergiant Rho Cassiopeiae dimmed by more than a visual magnitude, while its effective temperature decreased from \~7000 K to below 4000 K…