Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.5k papers
- European Southern ObservatoryCL1.5k papers
- Max Planck SocietyDE1.4k papers
- National Institute for AstrophysicsIT1.4k papers
- Center for Astrophysics Harvard & SmithsonianUS1.4k papers
- Ludwig-Maximilians-Universität MünchenDE1.4k papers
- Leiden UniversityNL1.3k papers
- California Institute of TechnologyUS1.2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.2k papers
- Max Planck Institute for AstronomyDE1.1k papers
- University of CambridgeGB950 papers
- University College LondonGB919 papers
216 papers · 2 filters
The Puzzles of RX J1856.5-3754: Neutron Star or Quark Star?
J. E. Truemper, V. Burwitz, F. Haberl +1
We discuss recent Chandra and XMM-Newton observations of the bright isolated neutron star RX J1856.5-3754 and suggest that the absence of any line features is due to effects of a h…
A Catalog of Compact Groups of Galaxies in the SDSS Commissioning Data
B. C. Lee, S. S. Allam, D. L. Tucker +20
Compact groups (CGs) of galaxies -- relatively poor groups of galaxies in which the typical separations between members is of the order of a galaxy diameter -- offer an exceptional…
XMM-Newton observations of Sagittarius A East
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle +1
We present an analysis of a recent XMM-Newton observation of Sgr A East, a supernova remnant located close to the Galactic Centre. Very high quality X-ray spectra reveal many emiss…
Structural and scaling properties of galaxy clusters: probing the physics of structure formation
M. Arnaud, G. W. Pratt, E. Pointecouteau
We present XMM-Newton studies of the total mass, gas density, temperature and entropy profiles in nearby hot and cool clusters, together with follow-up observations of distant clus…
The rotational broadening and the mass of the donor star of GRS 1915+105
E. T. Harlaftis, J. Greiner
The binary parameters of the microquasar GRS 1915+105 have been determined by the detection of Doppler-shifted 12CO and 13CO lines in its K-band spectrum (Greiner et al., 2001, Nat…
The MUNICS Project: Galaxy Assembly at 0 < z < 1
N. Drory, R. Bender, G. Feulner +4
We summarize the results obtained from the MUNICS K-band selected Galaxy survey thus far. MUNICS is a wide-area, medium-deep, photometric and spectroscopic survey selected in the K…
ISO observations of four active galaxies
Michel Dennefeld, Thomas Boller, Dimitra Rigopoulou +1
We present ISO PHOT-S spectra of four galaxies known or suspected to host a central AGN, selected from the initial Iras/Rosat sample of Boller et al. (1992). Two of them had no obv…
XMM observations of three middle-aged pulsars
V. E. Zavlin, G. G Pavlov
X-ray observations of middle-aged pulsars allow one to study nonthermal radiation from pulsar magnetospheres and thermal radiation from neutron star (NS) surfaces. In particular, f…
IZw1 observed with XMM-Newton: Low-energy spectral complexity, iron lines, and hard X-ray flares
L. C. Gallo, Th. Boller, W. N. Brandt +2
We present a 20 ks XMM-Newton observation of the prototypical Narrow-Line Seyfert 1 galaxy IZw1. The best-fit model to the data is a double blackbody plus a dominant power-law, on…
X-ray variability of the Narrow Line Seyfert 1 Galaxy PKS 0558-504
W. Brinkmann, P. Arevalo, M. Gliozzi +1
We present results from several XMM-Newton observations of the radio loud Narrow-line Seyfert 1 galaxy (NLS1) PKS 0558-504. We find evidence for strong and persistent X-ray variabi…
The infrared L'-band view of the Galactic Center with NAOS-CONICA at VLT
Y. Clénet, D. Rouan, E. Gendron +9
We report on Galactic Center L'-band observations made during NAOS/CONICA Science Verification. Colors of the inner 2" stars reveal an infrared excess of S2, the closest star to th…
The environments of hyperluminous infrared galaxies at 0.44<z<1.55
D. Farrah, J. Geach, M. Fox +5
We present deep wide-field K-band observations of six Hyperluminous Infrared Galaxies (HLIRGs) spanning a redshift range 0.44<z<1.55. The sample resides in a wide variety of enviro…
Optically bright Active Galactic Nuclei in the ROSAT-Faint Source Catalogue
M. -P. Veron-Cetty, S. K. Balayan, A. M. Mickaelian +8
To build a large, optically bright, X-ray selected AGN sample we have correlated the ROSAT-FSC catalogue of X-ray sources with the USNO catalogue limited to objects brighter than O…
Faint 6.7um Galaxies and their Contributions to the Stellar Mass Density in the Universe
Yasunori Sato, Lennox L. Cowie, Kimiaki Kawara +6
We discuss the nature of faint 6.7um galaxies detected with the mid-infrared camera ISOCAM on board the Infrared Space Observatory (ISO). The 23 hour integration on the Hawaii Deep…
Molecular Gas in the Lensed Lyman Break Galaxy cB58
Andrew J. Baker, Linda J. Tacconi, Reinhard Genzel +2
We have used the IRAM Plateau de Bure Interferometer to map CO(3-2) emission from the gravitationally lensed Lyman break galaxy MS1512-cB58. This is the first detection of a molecu…
The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs?
P. Severgnini, R. Della Ceca, V. Braito +8
Here we present the results obtained from the analysis of 75 ksec of XMM-Newton observations of a sample of EROs selected from one MUNICS field (K'<19.5 mag). We find 6 EROs with a…
The TESIS project: revealing massive early-type galaxies at z>1
P. Saracco, M. Longhetti, P. Severgnini +8
We present the preliminary results of an on-going near-IR low resolution spectroscopic follow-up of a complete sample of 30 bright (K'<18.5) EROs selected over 360 arcmin^2 from th…
Hot Very Small dust Grains in NGC 1068 seen in jet induced structures thanks to VLT/NACO adaptive optics
Daniel Rouan, Francois Lacombe, Eric Gendron +12
We present K, L and M diffraction-limited images of NGC 1068 obtained with NAOS+CONICA at VLT/YEPUN over a 3.5" field around the central engine. Hot dust (Tcol = 550-650 K) is foun…
Star-Forming Galaxies in the Sloan Digital Sky Survey -- The View from Pittsburgh
Regina E. Schulte-Ladbeck, Christopher J. Miller, Ulrich Hopp +4
We used data from the Data Release 1 (DR1) of the Sloan Digital Sky Survey (SDSS) in order to define a catalog of about 13,000 star-forming galaxies (SFG). We discuss the results o…
Photometric redshifts with the Multilayer Perceptron Neural Network: application to the HDF-S and SDSS
E. Vanzella, S. Cristiani, A. Fontana +8
We present a technique for the estimation of photometric redshifts based on feed-forward neural networks. The Multilayer Perceptron (MLP) Artificial Neural Network is used to predi…
A phase-dependent absorption line in the spectrum of the X-ray pulsar RX J0720.4-3125
F. Haberl, V. E. Zavlin, J. Truemper +1
The XMM-Newton spectra of the isolated neutron star RX J0720.4-3125 show deviations from a Planckian energy distribution below 400 eV, similar to the spectra of RBS1223, another lo…
The Chandra Deep Field South: Optical Spectroscopy I
G. P. Szokoly, J. Bergeron, G. Hasinger +15
We present the results of our spectroscopic follow-up program of the X-ray sources detected in the 942 ks exposure of the Chandra Deep Field South (CDFS). 288 possible counterparts…
Evidence for Black Hole Spin in GX 339-4: XMM-Newton EPIC-pn and RXTE Spectroscopy of the Very High State
J. M. Miller, A. C. Fabian, C. S. Reynolds +9
We have analyzed spectra of the Galactic black hole GX 339-4 obtained through simultaneous 76 ksec XMM-Newton/EPIC-pn and 10 ksec RXTE observations during a bright phase of its 200…
Finding structures in photometric redshift galaxy surveys: An extended friends-of-friends algorithm
C. S. Botzler, J. Snigula, R. Bender +1
We present a modified version of the friends-of-friends (FOF) structure finding algorithm, designed specifically to locate groups or clusters of galaxies in photometric redshift da…