Hubble Traces Subtle Signals of Water on Hazy Worlds
Astronomers continue to tally up how many planets are orbiting other stars. But
finding out what their atmospheres are made of is another story. Two teams of
scientists using the Hubble Space Telescope have found faint signatures of
water in the atmospheres of five distant exoplanets. The planets are not the size
of Earth, but rather massive worlds known as hot Jupiters because they orbit so
close to their stars. Hubble's instruments can deduce the types of gases in the
atmospheres of these monsters by determining which colors of a star's light are
transmitted and which are partially absorbed as the planet passes in front of its
star. The observations demonstrate Hubble's continuing exemplary performance
in exoplanet research.
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November 25, 2013: Information on
Upcoming Cycle 22 Call for Proposals
The Cycle 22 Call for Proposals will be released to the Science Community in early January 2014, with a subsequent shift in the Phase I deadline from late March to mid-April.
Questions can be addressed to the STScI Help Desk (email: email@example.com; phone: 410-338-1082).
Space Telescope Users Committee
The report from the April meeting of the Space Telescope Users Committee (STUC) has been submitted to the STScI Director and the HST Senior Project Scientist. The report and the presentations from the STUC meeting are available on the STUC web pages.
HST Frontier Fields
HST Frontier Fields will obtain its first observations in October. The first epoch of observations for Abell 2744 - some 70 orbits -- will start October 25th, and continue through December. In addition, two orbits of pre-imaging will be obtained for MACSJ0717.5+3745 on October 17th. For data releases, please see the MAST Frontier Fields website.
The Frontier Fields public lensing models for Abell 2744 have been released and are available on the MAST Frontier Fields Lensing Model website. This website includes interactive tools for examining the lensing maps and obtaining magnifications and uncertainties from a variety of models, given a position and redshift.
For more information about the survey, please see the Frontier Fields website.
Exposure Time Calculators
The ETCs are web-based applications that assist Hubble users in preparing Phase I and Phase II observing proposals. The ETCs calculate exposure times or SNRs for simulated astronomical observations using any of HST's primary instruments:
ACS | COS | STIS | WFC3
Hubble Legacy Archive
The Hubble Legacy Archive (HLA) is designed to optimize science from HST by providing online, enhanced Hubble products and advanced browsing capabilities.