MEASURING THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE [PDF]
AbstractTen years ago our team completed the Hubble Space Telescope Key Project on the extragalactic distance scale. Cepheids were detected in some 25 galaxies and used to calibrate four secondary distance indicators that reach out into the expansion field beyond the noise of galaxy peculiar velocities.
Freedman, W., Kennicutt, R., Mould, J.
openaire +4 more sources
[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] WFPC2 Imaging of Cassiopeia A [PDF]
The young SNR Cassiopeia A was imaged with WFPC-2 through four filters selected to capture the complete velocity range of the remnant's main shell in several important emission lines.
Robert A. Fesen +6 more
openaire +5 more sources
A Stable H2O Atmosphere on Europa’s Trailing Hemisphere From HST Images
Previous studies of the global intensities of the oxygen emissions at 1,356 Å and 1,304 Å revealed molecular oxygen (O2) in Europa's atmosphere. Here we investigate the relative changes of the two oxygen emissions when Europa emerges from eclipse as well
Lorenz Roth
doaj +1 more source
Jovian Magnetospheric Injections Observed by the Hubble Space Telescope and Juno
We compare Hubble Space Telescope observations of Jupiter's FUV auroras with contemporaneous conjugate Juno in situ observations in the equatorial middle magnetosphere of Jupiter.
J. D. Nichols +15 more
doaj +1 more source
Space Telescope Imaging Spectrograph Parallel Observations of the Planetary Nebula M94-20 [PDF]
The planetary nebula M94--20 in the Large Magellanic Cloud was serendipitously observed with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope as part of the Hubble Space Telescope Archival Pure Parallel Program.
Morgan D. H. +2 more
core +2 more sources
PACMan2: Next Steps in Proposal Review Management
With the start of a new Great Observatories era, there is renewed concern that the demand for these forefront facilities, through proposal pressure, will exceed conventional peer-review management’s capacity for ensuring an unbiased and efficient ...
Louis-Gregory Strolger +7 more
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Hubble Space TelescopeScience Metrics [PDF]
Since its launch in April 1990, the Hubble Space Telescope (HST) has produced an increasing flow of scientific results. The large number of refereed publications based on HST data allows a detailed evaluation of the effectiveness of this observatory and of its scientific programs.
Meylan, Georges +2 more
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White Dwarfs In Ngc6397 And M4: Constraints On The Physics Of Crystallization [PDF]
We explore the physics of crystallization in the dense Coulomb plasma of the deep interiors of white dwarf stars using the color-magnitude diagram and luminosity function constructed from Hubble Space Telescope photometry of the globular cluster M 4 and ...
Bergeron, P. +4 more
core +2 more sources
A 1.3% Distance to M33 from Hubble Space Telescope Cepheid Photometry
We present a low-dispersion period–luminosity relation (PL) based on 154 Cepheids in Messier 33 (M33) with Hubble Space Telescope (HST) photometry from the PHATTER survey.
Louise Breuval +9 more
doaj +1 more source
Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. IV: Measurement for Sculptor [PDF]
This article presents a measurement of the proper motion of the Sculptor dwarf spheroidal galaxy determined from images taken with the Hubble Space Telescope using the Space Telescope Imaging Spectrograph in the imaging mode.Comment: 38 pages, 15 figures,
Bristow, P. +7 more
core +3 more sources

