Unlocking the Secrets of Nearby Exoplanets with the TESS Mission - Georg.
Δημοσιεύτηκε στις 16 Δεκ 2016
Dr. Ricker is the PI of the TESS Mission which will explore nearby stars for exoplanets.
The
Transiting Exoplanet Survey Satellite (TESS) will discover thousands of
exoplanets in orbit around the brightest stars in the sky. In its
two-year prime survey mission, TESS will monitor more than 200,000
bright stars in the solar neighborhood for temporary drops in brightness
caused by planetary transits. This first-ever spaceborne all-sky
transit survey will identify planets ranging from Earth-sized to gas
giants, around a wide range of stellar types and orbital distances.
TESS
stars will typically be 30-100 times brighter than those surveyed by
the Kepler satellite; thus, TESS planets will be far easier to
characterize with follow-up observations. For the first time it will be
possible to study the masses, sizes, densities, orbits, and atmospheres
of a large cohort of small planets, including a sample of rocky worlds
in the habitable zones of their host stars.
An additional data
product from the TESS mission will be full frame images (FFI) with a
cadence of 30 minutes. These FFI will provide precise photometric
information for every object within the 2300 square degree instantaneous
field of view of the TESS cameras. These objects will include more than
1 million stars and bright galaxies observed during sessions of several
weeks. In total, more than 30 million objects brighter than magnitude
I=16 will be precisely photometered during the two-year prime mission.
In principle, the lunar-resonant TESS orbit could provide opportunities
for an extended mission lasting more than a decade, with data rates in
excess of 100 Mbits/s.
An extended survey by TESS of regions
surrounding the North and South Ecliptic Poles will provide prime
exoplanet targets for characterization with the James Webb Space
Telescope (JWST), as well as other large ground-based and space-based
telescopes of the future.
A NASA Guest Investigator program is
planned for TESS. The TESS legacy will be a catalog of the nearest and
brightest main-sequence stars hosting transiting exoplanets, which
should endure as the most favorable targets for detailed future
investigations.
TESS is currently targeted for launch in late 2017 as a NASA Astrophysics Explorer mission
The
Transiting Exoplanet Survey Satellite (TESS) will discover thousands of
exoplanets in orbit around the brightest stars in the sky. In its
two-year prime survey mission, TESS will monitor more than 200,000
bright stars in the solar neighborhood for temporary drops in brightness
caused by planetary transits. This first-ever spaceborne all-sky
transit survey will identify planets ranging from Earth-sized to gas
giants, around a wide range of stellar types and orbital distances.
TESS
stars will typically be 30-100 times brighter than those surveyed by
the Kepler satellite; thus, TESS planets will be far easier to
characterize with follow-up observations. For the first time it will be
possible to study the masses, sizes, densities, orbits, and atmospheres
of a large cohort of small planets, including a sample of rocky worlds
in the habitable zones of their host stars.
An additional data
product from the TESS mission will be full frame images (FFI) with a
cadence of 30 minutes. These FFI will provide precise photometric
information for every object within the 2300 square degree instantaneous
field of view of the TESS cameras. These objects will include more than
1 million stars and bright galaxies observed during sessions of several
weeks. In total, more than 30 million objects brighter than magnitude
I=16 will be precisely photometered during the two-year prime mission.
In principle, the lunar-resonant TESS orbit could provide opportunities
for an extended mission lasting more than a decade, with data rates in
excess of 100 Mbits/s.
An extended survey by TESS of regions
surrounding the North and South Ecliptic Poles will provide prime
exoplanet targets for characterization with the James Webb Space
Telescope (JWST), as well as other large ground-based and space-based
telescopes of the future.
A NASA Guest Investigator program is
planned for TESS. The TESS legacy will be a catalog of the nearest and
brightest main-sequence stars hosting transiting exoplanets, which
should endure as the most favorable targets for detailed future
investigations.
TESS is currently targeted for launch in late 2017 as a NASA Astrophysics Explorer mission
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