Results 1 to 10 of about 1,181,189 (249)

SPICES II. Optical and Near-Infrared Identifications of Faint X-Ray Sources from Deep Chandra Observations of Lynx [PDF]

, 2002
We present our first results on field X-ray sources detected in a deep, 184.7 ks observation with the ACIS-I camera on Chandra. The observations target the Lynx field of SPICES, and contains three known X-ray-emitting clusters out to z=1.27.
Chaffee, Frederic H., Connolly, Andrew, Dawson, Steve, Dey, Arjun, Eisenhardt, Peter, Elston, Richard, Holden, Brad, Rosati, Piero, Spinrad, Hyron, Stanford, S. A., Stern, Daniel, Tozzi, Paolo, Wu, K. L.   +12 more
core   +2 more sources

Hard X-ray emission from a young massive star-forming cluster [PDF]

, 2002
We report the detection of hard X-ray emission (>2 keV) from a number of point sources associated with the very young massive star-forming region IRAS 19410+2336.
Baraffe, Berghöfer, Beuther, Beuther, Beuther, Beuther, Casanova, Cesaroni, D'Antona, D'Antona, Ducati, Feigelson, Frerking, Garmire, Giacconi, Gregorio-Hetem, Grosso, Guilloteau, H. Beuther, Hamaguchi, Hanson, Hayashi, Hofner, Imanishi, J. Kerp, Kohno, Minier, Montmerle, P. Schilke, Palla, Palla, Preibisch, Ramond, Reid, Rieke, Ryter, Siess, Sridharan, T. Preibisch, T. Stanke, Tsuboi, Tsuboi, Tsuboi, Tsujimoto, Zinnecker   +44 more
core   +2 more sources

Near-Infrared Counterparts to Chandra X-ray Sources toward the Galactic Center. I. Statistics and a Catalog of Candidates [PDF]

, 2009
We present a catalog of 5184 candidate infrared counterparts to X-ray sources detected towards the Galactic center. The X-ray sample contains 9017 point sources detected in this region by the Chandra X-ray Observatory, including data from a recent deep ...
Bauer, Franz E., Mauerhan, Jon C., Morris, Mark R., Muno, Michael P., Nagata, Tetsuya, Nishiyama, Shogo   +5 more
core   +2 more sources

X-ray and Optical Study of Low Core Density Globular Clusters NGC6144 and E3 [PDF]

, 2009
We report on the Chandra X-ray Observatory and Hubble Space Telescope observation of two low core density globular clusters, NGC6144 and E3. By comparing the number of X-ray sources inside the half-mass radius to those outside, we found 6 X-ray sources ...
Albert K. H. Kong, Alcaino, Bassa, Cees Bassa, Cool, Cool, David Pooley, Davies, Frank Verbunt, Freeman, Giacconi, Green, Grindlay, Grindlay, Heinke, Heinke, Hills, Kong, Lu, Pooley, Pooley, Pooley, Pryor, Sarajedini, Scott F. Anderson, Shih-Hao Lan, Verbunt, Verbunt, Verbunt, Verbunt, Walter H. G. Lewin, Wijnands   +31 more
core   +2 more sources

Chasing the identification of ASCA Galactic Objects (ChIcAGO): An X-ray survey of unidentified sources in the galactic plane. I : Source sample and initial results [PDF]

, 2013
We present the Chasing the Identification of ASCA Galactic Objects (ChIcAGO) survey, which is designed to identify the unknown X-ray sources discovered during the ASCA Galactic Plane Survey (AGPS).
Anderson, G.E., Benjamin, R.A., Brogan, C.L., Chakrabarty, D., Drake, Jeremy J., Drew, J.E., Farrell, S.A., Finley, J.P., Gaensler, B.M., Grindlay, J.E., Hong, J., Kaplan, D.L.A., Lazio, T.J.W.W., Lee, J.C., Mauerhan, J.C., Muno, M.P., Murray, Stephen S., Posselt, B., Slane, P.O., Steeghs, D.T.H., Van Kerkwijk, M.H.   +20 more
core   +4 more sources

Radial Distribution of X-ray Point Sources near the Galactic Center [PDF]

, 2009
(Abridged) We present the LogN-LogS and spatial distributions of X-ray point sources in seven Galactic Bulge (GB) fields within 4 deg from the Galactic Center (GC).
Baganoff, Bogdanov, Ebisawa, Freeman, Grindlay, Heinke, Hickox, Hong, Hong, Hong, JaeSub Hong, Jonathan E. Grindlay, Kim, Kim, Laycock, Maureen van den Berg, Muno, Muno, Muno, Muno, Muno, Murakami, Murakami, Nishiyama, Ruiter, Schlegel, Silas Laycock, Stanek, van den Berg, Wijnands   +29 more
core   +1 more source

X-ray reflection in a sample of X-ray bright Ultraluminous X-ray sources

, 2009
We apply a reflection-based model to the best available XMM-Newton spectra of X-ray bright UltraLuminous X-ray (ULX) sources (NGC 1313 X-1, NGC 1313 X-2, M 81 X-6, Holmberg IX X-1, NGC 5408 X-1 and Holmberg II X-1).
A. C. Fabian, Abolmasov, Arnaud, Blandford, Brenneman, Brown, Cackett, Colbert, Dewangan, Dickey, Fabbiano, Fabbiano, Fabian, Feng, Fryer, Fryer, George, Gladstone, Goad, Guilbert, Hadfield, Kaaret, Karachentsev, King, Kubota, Laor, Li, Liu, M. D. Caballero-García, Makishima, Mapelli, Miller, Miller, Miller, Miller, Miniutti, Miyawaki, Nandra, Paczynski, Pakull, Pakull, Reis, Reis, Remillard, Roberts, Roberts, Ross, Soria, Stobbart, Strohmayer, Tanaka, Ueda, Winter   +52 more
core   +1 more source

The Chandra Deep Field-North Survey. XIV. X-ray detected Obscured AGNs and Starburst Galaxies in the Bright Submm Source Population

, 2002
We provide X-ray constraints and perform the first X-ray spectral analyses for bright (f_850>=5mJy; S/N>=4) SCUBA sources in an 8.4'x8.4' area of the 2 Ms Chandra Deep Field-North survey containing the Hubble Deep Field-North.
A. E. Hornschemeier, Blain A. W., C. Vignali, D. M. Alexander, D. P. Schneider, Downes D., F. E. Bauer, G. Chartas, G. P. Garmire, Maiolino R., Matt G., Matt G., Rengarajan T. N., Rowan-Robinson M., S. C. Gallagher, Severgnini P., Soucail G., Vignati P., W. N. Brandt, Zezas A.   +19 more
core   +1 more source

XMM-Newton view of X-ray overdensities from nearby galaxy clusters: the environmental dependencies [PDF]

, 2017
In this work, we studied ten nearby ($z$$ \leq$0.038) galaxy clusters to understand possible interactions between hot plasma and member galaxies. A multi-band source detection was applied to detect point-like structures within the intra-cluster medium ...
Caglar, Turgay, Hudaverdi, Murat
core   +3 more sources

The X-ray emission from Young Stellar Objects in the rho Ophiuchi cloud core as seen by XMM-Newton

, 2004
We observed the main core F of the rho Ophiuchi cloud, an active star-forming region located at ~140 pc, using XMM-Newton with an exposure of 33 ks. We detect 87 X-ray sources within the 30' diameter field-of-view of the it EPIC imaging detector array ...
Allende Prieto, Allende Prieto, André, André, Baraffe, Barsony, Bontemps, Carpenter, Casanova, Cohen, Cushing, Feigelson, Feigelson, Feigelson, Gehrels, Grosso, Grosso, Grosso, Güdel, H. Ozawa, Holweger, Imanishi, Imanishi, Imanishi, Jansen, Kamata, Koyama, Loren, Martín, Martín, Meyer, Mohanty, Mokler, Montmerle, N. Grosso, Neuhäuser, Neuhäuser, Preibisch, T. Montmerle, Tsuboi, Tsuboi, Vuong, Wilking   +42 more
core   +6 more sources