Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Philippe Crane"'
Autor:
Philippe Crane
This is the first volume of a series on a regular up-to-date coverage of important developments in astronomy and astrophysics jointly published by ESO and Springer-Verlag. Here the reader finds a thorough review of the abundances of the elements up t
Publikováno v:
Symposium - International Astronomical Union. 198:338-343
We are conducting a survey on the 7Li/6Li ratio in interstellar space in order to seek limits on the variation in this ratio. The analysis is based on the technique we adopted in extracting the 11B/10B ratio. This technique uses a line of comparable
Autor:
J. C. Blades, F. D. Macchetto, A. Boksenberg, William B. Sparks, Philippe Crane, Craig D. Mackay, M. J. Disney, J. M. Deharveng, P. J. Boyce
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 298:121-130
We present Hubble Space Telescope (HST) images of seven low-redshift quasars (six taken with the Planetary Camera, one with the Wide Field Camera). These complete the sample of 14 quasars observed by the Faint Object Camera Investigation Definition T
Autor:
David J. Axon, William B. Sparks, Alessandro Marconi, Alessandro Capetti, Philippe Crane, F. D. Macchetto
Publikováno v:
The Astrophysical Journal. 489:579-600
We have obtained long-slit observations of the circumnuclear region of M87 at three different locations, with a spatial sampling of 0.028" using the Faint Object Camera f/48 spectrograph on board HST. These data allow us to determine the rotation cur
Autor:
P. J. Boyce, Philippe Crane, F. D. Macchetto, Steven Phillipps, Jean-Michel Deharveng, Craig D. Mackay, William B. Sparks, M. J. Disney, J. C. Blades, A. Boksenberg
Publikováno v:
Nature. 376:150-153
QUASARS are the most luminous objects in the Universe. It has been speculated that they are the visible evidence for accretion of gas onto supermassive black holes that reside at the centres of host galaxies. Direct observational confirmation that qu
Autor:
Philippe Crane
Publikováno v:
Symposium - International Astronomical Union. 150:127-132
Observations of interstellar CN, CH, and CH+ in diffuse and translucent clouds obtained with a spectral resolution of more the 500,000 are reported. First results from a survey of CH and CH+ are discussed. The CH+ isotopic ratio has been determined t
Autor:
Craig D. Mackay, Francesco Paresce, Gerd Weigelt, D. Baxter, Robert Jedrzejewski, Georges Meylan, J. M. Deharveng, R. Albrecht, Antonella Nota, F. D. Macchetto, Cesare Barbieri, M. J. Disney, Michael M. Shara, J. C. Blades, William B. Sparks, A. Boksenberg, Peter Jakobsen, Perry Greenfield, Ivan R. King, Philippe Crane, T. M. Kamperman
Publikováno v:
Nature. 352:297-301
High-resolution observations of the core of the globular cluster 47 Tucanae with the Faint Object Camera on the Hubble Space Telescope reveal a high density of 'blue straggler' stars, occupying the upper end of the main sequence from which all stars
Autor:
Philippe Crane
Publikováno v:
Lecture Notes in Physics ISBN: 9783540542933
The status of the Hubble Space Telescope (HST) as of 1990 October is reviewed and several photographs of astrophysically interesting objects are presented to demonstrate current capabilities. Observations relevant to cosmology which may be pursued by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7190514b77bd7fcf0e721ea4d52ebd91
https://doi.org/10.1007/3-540-54293-0_23
https://doi.org/10.1007/3-540-54293-0_23
Autor:
Philippe Crane
Publikováno v:
Gravitational Lenses ISBN: 9783540557975
Observations with the Faint Object Camera on Hubble Space Telescope of the gravitational lens systems G2237+0305 and PG1115+080 are presented and discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a6edb6255c14900080d6ec4a15e733e
https://doi.org/10.1007/3-540-55797-0_88
https://doi.org/10.1007/3-540-55797-0_88
Autor:
Nazzareno Mandolesi, Philippe Crane, Marc L. Kutner, J. C. Blades, Eliana Palazzi, Dennis J. Hegyi
Publikováno v:
Il Nuovo Cimento C. 13:537-540
The cosmic background radiation temperature at 1.3 mm wavelength has been determined by studying the absorption lines of the interstellar CN toward the star HD 154 368. The resulting value of (2.832±0.072) K is consistent with the weighted average,T