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Correlated X-Ray Spectral and Timing Behavior of the Black Hole Candidate XTE J1550–564: A New Interpretation of Black Hole States

The Astrophysical Journal Supplement Series American Astronomical Society 132:2 (2001) 377-402

Authors:

Jeroen Homan, Rudy Wijnands, Michiel van der Klis, Tomaso Belloni, Jan van Paradijs, Marc Klein-Wolt, Rob Fender, Mariano Méndez
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First Stellar Abundances in NGC 6822 from VLT-UVES and Keck-HIRES Spectroscopy**Based on observations obtained from the UVES commissioning at the Very Large Telescope (Kueyen), European Southern Observatory, Paranal, Chile, and the W. M. Keck Observatory, Hawaii. Keck is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration, and was made possible by the generous financial support of the W. M. Keck Foundation.

The Astrophysical Journal American Astronomical Society 547:2 (2001) 765-776

Authors:

KA Venn, DJ Lennon, A Kaufer, JK McCarthy, N Przybilla, RP Kudritzki, M Lemke, ED Skillman, SJ Smartt
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First observation of the sigma(*+)(c) baryon and a new measurement of the sigma(*+)(c) mass.

Physical review letters 86:7 (2001) 1167-1170

Authors:

R Ammar, A Bean, D Besson, R Davis, N Kwak, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, R Mahapatra, JJ O'Neill, R Poling, T Riehle, A Smith, CJ Stepaniak, J Urheim, S Ahmed, MS Alam, SB Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, A Anastassov, JE Duboscq, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, H Schwarthoff, JB Thayer, E von Toerne, MM Zoeller, SJ Richichi, H Severini, P Skubic, A Undrus, S Chen, J Fast, JW Hinson, J Lee, DH Miller, EI Shibata, IP Shipsey, V Pavlunin, D Cronin-Hennessy, AL Lyon, EH Thorndike, CP Jessop, H Marsiske, ML Perl, V Savinov, X Zhou, TE Coan, V Fadeyev, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, R Ayad, C Boulahouache, K Bukin, E Dambasuren, S Karamov, G Majumder, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehhauser, JC Wang, A Wolf, J Wu, S Kopp, AH Mahmood, SE Csorna, I Danko, KW McLean, S Márka, Z Xu, R Godang, K Kinoshita, IC Lai, S Schrenk, G Bonvicini, D Cinabro, S McGee, LP Perera, GJ Zhou, E Lipeles, SP Pappas, M Schmidtler, A Shapiro, WM Sun, AJ Weinstein, F Würthwein, DE Jaffe, G Masek, HP Paar, EM Potter, S Prell, V Sharma, DM Asner, A Eppich, TS Hill, RJ Morrison, RA Briere, GP Chen, BH Behrens, WT Ford, A Gritsan, J Roy, JG Smith, JP Alexander, R Baker, C Bebek, BE Berger, K Berkelman, F Blanc, V Boisvert, DG Cassel, M Dickson, PS Drell, KM Ecklund, R Ehrlich, AD Foland, P Gaidarev, RS Galik, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, CD Jones, DL Kreinick, M Lohner, A Magerkurth, TO Meyer, NB Mistry, E Nordberg, JR Patterson, D Peterson, D Riley, JG Thayer, D Urner, B Valant-Spaight, A Warburton, P Avery, C Prescott, AI Rubiera, J Yelton, J Zheng, G Brandenburg, A Ershov, YS Gao, DY Kim, R Wilson, TE Browder, Y Li, JL Rodriguez, H Yamamoto, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, M Palmer, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, R Janicek, PM Patel, AJ Sadoff, CLEO Collaboration

Abstract:

Using data recorded with the CLEO II and CLEO II.V detector configurations at the Cornell Electron Storage Rings, we report the first observation and mass measurement of the Sigma(*+)(c) charmed baryon, and an updated measurement of the mass of the Sigma(+)(c) baryon. We find M(Sigma(*+)(c))-M(Lambda(+)(c)) = (231.0+/-1.1+/-2.0) MeV, and M(Sigma(+)(c))-M(Lambda(+)(c)) = (166.4+/-0.2+/-0.3) MeV, where the errors are statistical and systematic, respectively.
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The Star Formation of NGC 4365

Astrophysical Journal Letters 548 (2001) L33-L36

Authors:

RL Davies, Harald Kuntschner, Eric Emsellem, R Bacon
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The WR content of IC10 - first detection of WC9 stars in a low metallicity environment?*

Astronomy & Astrophysics EDP Sciences 366:2 (2001) l1-l4

Authors:

P Royer, SJ Smartt, J Manfroid, J-M Vreux
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