We present 7 eclipse timings of the low mass X-ray binary EXO0748−676 obtained with the USA experiment during 1999−2000 as well as 122 eclipse timings obtained with RXTE during 1996−2000. According to our analysis, the mean orbital period has increased by ∼ 8 ms between the pre-RXTE era (1985−1990) and the RXTE/USA era (1996−2000). This corresponds to an orbital period derivative of Porb/Ṗorb ∼...

IN MARTIAN METEORITE ALH84001. D. C. Golden, D. W. Ming*, R. V. Morris, A. J. Brearley, H. V. Lauer Jr., A. Treiman, M. E. Zolensky, C. S. Schwandt, G. E. Lofgren, and G. A. McKay, Hernandez Engineering Inc., Houston, TX; ARES, NASA Johnson Space Center, Houston, TX; Dept. of Earth & Planetary Sciences, Univ. of New Mexico, Albuquerque, NM, Lockheed Martin, Houston, TX; Lunar & Planetary Instit...

Sources and transport of ∆C on CO2 within the Mexico City Basin and vicinity S. A. Vay, S. C. Tyler, Y. Choi, D. R. Blake, N. J. Blake, G. W. Sachse, G. S. Diskin, and H. B. Singh NASA Langley Research Center, Hampton, Virginia, USA University of California, Irvine, California, USA National Institute of Aerospace, Hampton, Virginia, USA NASA Ames Research Center, Moffett Field, California, USA ...

I Chapman University, One University Drive, Orange, CA 92866, USA 'NASA Goddard Space Flight Center, Greenbelt, MD 20771 , USA ' Institute of Applied Geophysics, Roslokinskaya sIr., 9, Moscow, 129128, Russia 'Chiba University, Yayoi 1-33, Inage, Chiba, 263-8522, Japan ' LPC2E1CNRS Orleans, France, 6Institute of Space Science, National Central University, Chung-Li 320, Taiwan 'Dept Geosciences, ...

In January 2003, the Chandra Orion Ultradeep Project (COUP) detected about 1400 young stars during a 13.2 day observation of the Orion Nebula Cluster (ONC). This paper is a study of the X-ray properties of a well-defined sample of 28 solar-mass ONC stars based on COUP data. Our goals are to characterize Universe Division, Science Mission Directorate NASA Headquarters

a Institute for Space Sciences, Free University of Berlin, Germany b Remote Sensing of Environmental Dynamics Laboratory, DISAT, Università degli Studi Milano-Bicocca, Italy c European Commission, DG-JRC, Institute for Environment and Sustainability, Ispra, Varese, Italy d Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USA e NASA Goddard Space Flight Center, Greenbelt,...

A STUDY OF TRACE-ELEMENT PARTITIONING BETWEEN PYROXENE AND ANGRITIC MELT: EQUILIBRIUM AND KINETIC EFFECTS INCLUDING SECTOR ZONING IN PYROXENE. G. E. Lofgren 1, A. J. Fahey2, and G. J. Wasserburg2, 'Mail Code SN4, NASA Johnson Space Center, Houston TX 77058, USA, 2Lunatic Asylum, Division of Geological and Planetary Science, Mail Stop 170-25, California Institute of Technology, Pasadena CA 91125...

Daniel J. H. Chung, Edward W. Kolb, Antonio Riotto Department of Physics and Enrico Fermi Institute The University of Chicago, Chicago, Illinois 60637-1433 NASA/Fermilab Astrophysics Center Fermilab National Accelerator Laboratory, Batavia, Illinois 60510-0500 Department of Astronomy and Astrophysics and Enrico Fermi Institute The University of Chicago, Chicago, Illinois 60637-1433 Theory Divis...

R. B. Gerber,* B. Brauer, S. K. Gregurick and G. M. Chaban Department of Physical Chemistry and Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel Department of Chemistry, University of California, Irvine, CA 92697, USA Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, Baltimore, MD 20215, USA NASA Ames Research Center, Moffet Field, CA...

ion for Ef ciently Computing Most Probable Explanations in Bayesian Networks Ole J. Mengshoel Carnegie Mellon University NASA Ames Research Center Mail Stop 269-3 Moffett Field, CA 94035 [email protected]