41 to 50 of 41,976 Results
Dec 1, 1992
Terebey, S.; Chandler, C. J.; Andre, P., 1992, "Millimeter Continuum Measurements of Circumstellar Dust Around Very Young Low Mass Stars", https://hdl.handle.net/2014/34977, Pasadena, California, USA, JPL Open Repository
We investigate the question of disk formation during the protostar phase. We build on the results of Keene and Masson (1990) who analysis of L1551 showed themillimeter continuum emission comes from both an unresolved circumstellar conponent i.e. disk and an extended cloud core. |
Dec 1, 1992
Calhoun, M.; Kuhnle, P., 1992, "Ultrastable Reference Frequency Distribution Utilizing a Fiber Optic Link", https://hdl.handle.net/2014/34794, ['Precise Time and Time Interval Applications and Planning Meeting', 'Tysons Corner, Virginia, USA'], JPL Open Repository
Link phase noise and Allan deviation do not degrade the hydrogen maser performance using 800 meters of LTC fiber optic cable. |
Jan 1, 1993
Hill, R.; Madore, B.; Freedman, W., 1993, "The Initial Mass Function for Massive Stars in the Magellanic Clouds. I. UBV Photometry and CM Diagrams for 14 OB Associations", https://hdl.handle.net/2014/34881, JPL Open Repository
This paper presents data used to construct color-magnitude diagrams for the purposes of investigating the massive-star content of the associations. |
Jan 1, 1993
Tsurutani, B., 1993, "Electromagnetic Waves with Frequencies Near the Local Proton Gryofrequency: ISEF-3 1 AU Observations", https://hdl.handle.net/2014/35612, UNKNOWN, JPL Open Repository
Low Frequency electromagnetic waves with periods near the local proton gyrofrequency have been detected near 1 AU by the magnetometer onboard ISEE-3. For these 1 AU waves two physical processes are possible: solar wind pickup of nuetral (interstellar?) particles and generation by... |
Jan 1, 1993
Plaut, J.; Arvidson, R., 1993, "Comparison of Goldstone and Magellan Radar Data in the Equatorial Plains of Venus", https://hdl.handle.net/2014/36009, JPL Open Repository
This paper describes the comparison of image data with derived parameters of the equatorial plains of Venus. |
Jan 1, 1993
Chahine, M. T., 1993, "Observation of Local Cloud and Moisture Feedbacks Associated with High Ocean and Desert Surface Temperatures", https://hdl.handle.net/2014/34988, n/a, JPL Open Repository
New data on clouds and moisture, made possible by reanalysis of weather satellite observations, show that the atmosphere reacts to warm ocean pools in the Western Pacific Ocean with increased moisture and cloudiness, suggesting a negative feedback limiting the rise in sea-surface... |
Jan 1, 1993
C.P. Jones, 1993, "Cassini Program Update", https://hdl.handle.net/2014/35926, ['AIAA', 'Space Programs and Technologies Conf.', 'Huntsville, AL'], JPL Open Repository
The Cassini Project is NASA's next mission the outer planets. Managed at the Jet Propulsion Laboratory and with the joint participation of the European Space Agency (ESA) and Agenzia Spatiale Italiana (ASI), Cassini will accomplish a comprehensive survey of the planet Saturn, Tit... |
Jan 1, 1993
Nagendra, C.L.; Lamb, James L., 1993, "Optical Properties of Semiconductor-Metal Composite Thin Films in the Infrared Region", https://hdl.handle.net/2014/36574, UNKNOWN, JPL Open Repository
Germanium:Silver (Ge:Ag) composite thin films having different concentrations of Ag, ranging from 7% to 40% have been prepared by dc co-sputtering of Ge an Ag and the films' surface morphology and optical properties have been characterized using transmission electron microscopy (... |
Jan 1, 1993
Mason, P. V.; Strayer, D.; Petrac, D.; Gutt, G.; Warfield, K., 1993, "The Control of Liquid Helium in Space by Electrostatics for the Satellite Test of Equizalence Principle Experiment", https://hdl.handle.net/2014/35571, UNKNOWN, JPL Open Repository
The equivalence of gravitational and inertial mass has been advanced to a basic postulate of the Einstein view of gravity. As such it deserves the most rigorous testing possible. |
Jan 1, 1993
Evans, Diane L., 1993, "Earth Remote Sensing at the Jet Propulsion Laboratory", https://hdl.handle.net/2014/34829, USA, JPL Open Repository
This paper provides brief examples of research being done in these areas, in which remote sensing is used as a tool; and a description of the associated insturment and mission activities. It aslo descriges opportunities for furute interdisplinary research including interactions b... |