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XMM-Newton Detection of the Supernova Remnant G337.2+0.1
Albacete Colombo, Juan F.; Benaglia, Paula; Combi, Jorge A. +1 more
We report the first XMM-Newton detection of the SNR candidate G337.2+0.1 (=AX J1635.9-4719). The object shows centrally filled and diffuse X-ray emission. The emission peaks in the hard 3.0-10.0 keV band. A spatially resolved spectral study confirms that the column density of the central part of the SNR is about NH~5.9(+/-1.5)×1022…
HST WFPC2 Observations of the Peculiar Main Sequence of the Double Star Cluster NGC 2011 in the Large Magellanic Cloud
Gouliermis, D. A.; Dapergolas, A.; Kontizas, M. +2 more
We report the serendipitous discovery of a peculiar main sequence in archived Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) observations of the young star cluster NGC 2011 in the Large Magellanic Cloud. The bright part of this main sequence exhibits a prominent double, forklike feature, as if it consists of twin main sequences, one …
On VI Asymmetry and an Accelerated Outflow in an Obscured Seyfert: FUSE and HST STIS Spectroscopy of Mrk 533
Hutchings, John; Whittle, Mark; Wills, Beverley J. +2 more
We present far-ultraviolet spectra of the Seyfert 2 galaxy Mrk 533 obtained with FUSE. These spectra show narrow asymmetrical O VI λλ1032,1038 emission lines with stronger wings shortward of the peak wavelength, but the degree of asymmetry of these wings in velocity is much lower than that of the wings of the lines of lower ionization. In the comb…
Discovery of an Eclipsing X-Ray Binary with a 32.69 hr Period in M101: An Analog of Her X-1 or LMC X-4?
Liu, Jifeng; Di Stefano, Rosanne; Kuntz, Kip +3 more
We report the discovery of an eclipsing X-ray binary in M101, the first such system to be discovered outside the Local Group. Based on a sequence of 25 Chandra observations that sample a wide range of orbital phases, we find a period of 32.688+/-0.002 hr, which we interpret as an orbital period. The folded light curve exhibits an eclipse lasting a…
Time-Distance Measurements of Cross-Correlation Asymmetries around NOAA AR 10486
Thompson, Michael J.; Jensen, Jesper M.; Pijpers, Frank P.
We apply time-distance helioseismology to NOAA AR 10486 in order to examine the effect the presence of magnetic fields has on the resulting cross-correlations. Large-amplitude asymmetries between waves propagating in opposite directions are observed. The asymmetries can be attributed to suppression and absorption of seismic waves by the magnetic f…
Radio and Hard X-Ray Imaging Observations of the M5.7 Flare of 2002 March 14
Kundu, M. R.; Garaimov, V. I.; Schmahl, E. J.
We describe a flare of GOES class M5.7 that was observed simultaneously by RHESSI (Ramaty High Energy Solar Spectroscopic Imager) and NoRH (Nobeyama Radio Heliograph). The flare occurred in AR 9866 located near the disk center. The hard X-ray (HXR), microwave, EIT, and TRACE 195 Å observations indicate that the flaring region consisted of a comple…
Modeling the Evolution of Dusty Starburst Galaxies in Multiband Deep Surveys
Wang, Y. P.
We model the constraints set on the evolution of dusty starburst galaxies by the current deep extragalactic surveys performed in the far-infrared with Spitzer, and at radio wavelengths with the VLA. Our models fit the number counts in all the available spectral bands well and also provide a reasonably close match to the redshift distribution of th…
Great Storm Particle Event on 2000 August 11 Observed by SOHO ERNE
Riihonen, E.; Torsti, J.; Mäkelä, P. +1 more
We report on an energetic storm particle event on 2000 August 11 observed by ERNE on board SOHO. A large-intensity enhancement started simultaneously in all energy channels between 2 and 50 MeV at 11 UT. The concurrence of the onsets indicates the local nature of the particle event. Intensities increased 100-fold from the background level before 1…
The Bright Ages Survey. I. Imaging Data
Salim, Samir; Rich, R. Michael; Frogel, Jay A. +3 more
This is the first paper in a series presenting and analyzing data for a K-selected sample of galaxies collected in order to identify and study galaxies at moderate to high redshift in rest-wavelength optical light. The sample contains 842 objects over six separate fields covering 75.6 arcmin2 down to K=20-20.5. We combine the K band wit…