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  • Astrophysics
  • 2020-2022  (4)
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  • 1
    Publication Date: 2020-01-22
    Description: TESS launched 18 April 2018 to conduct a two-year, near all-sky survey for at least 50 small, nearby exoplanets for which masses can be ascertained and whose atmospheres can be characterized by ground- and space-based follow-on observations. TESS has completed its survey of the southern hemisphere and begun its survey of the northern hemisphere, identifying 〉1000 candidate exoplanets and unveiling a plethora of exciting non-exoplanet astrophysics results, such as asteroseismology, asteroids, and supernova. The TESS Science Processing Operations Center (SPOC) processes the data downlinked every two weeks to generate a range of data products hosted at the Mikulski Archive for Space Telescopes (MAST). For each sector (~1 month) of observations, the SPOC calibrates the image data for both 30-min Full Frame Images (FFIs) and up to 20,000 pre-selected 2-min target star postage stamps. Data products for the 2-min targets include simple aperture photometry and systematic error-corrected flux time series. The SPOC also conducts searches for transiting exoplanets in the 2-min data for each sector and generates Data Validation time series and associated reports for each transit-like feature identified in the search. Multi-sector searches for exoplanets are conducted periodically to discover longer period planets, including those in the James Webb Continuous Viewing Zone (CVZ), which are observed for up to one year. Starting with Sector 8, scattered light from the Earth and Moon contaminated significant portions of the data in each orbit. We have developed algorithms for automated identification of the scattered light features at the individual target level. Previously, data for all stars on a CCD affected by scattered light were manually excluded. The automated flagging will allow us to retain significantly more data for stars that are not affected by the scattered light even though it is occurring elsewhere on the CCD. We also discuss enhancements to the SPOC pipeline and the newly available FFI light curves. The TESS Mission is funded by NASA's Science Mission Directorate as an Astrophysics Explorer Mission.
    Keywords: Astrophysics
    Type: ARC-E-DAA-TN76812 , American Astronomical Society Meeting; Jan 04, 2020 - Jan 08, 2020; Honolulu, HI; United States
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  • 2
    Publication Date: 2020-01-21
    Description: Habitable Exoplanet Observatory Mission (HabEx) will image & spectroscopically characterize planetary systems in the habitable zone around nearby sun-like stars. Additionally, HabEx will perform a broad range of general astrophysics science enabled by a 150 to 1700 nm spectral range and 3 x 3 arc-minute FOV. Critical to achieving the HabEx science goals is a large, ultra-stable telescope. The baseline HabEx telescope is a 4-m off-axis unobscured three-mirror-anastigmatic design with diffraction limited performance at 400 nm and wavefront stability of picometers per mK. These specifications are driven by science requirements. STOP (structural thermal optical performance) analysis predicts that the baseline telescopes opto-mechanical design meets its specified performance tolerances.
    Keywords: Astrophysics
    Type: MSFC-E-DAA-TN75627 , American Astronomical Society Meeting; Jan 04, 2020 - Jan 08, 2020; Honolulu, HI; United States
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  • 3
    Publication Date: 2020-01-16
    Description: No abstract available
    Keywords: Astrophysics
    Type: MSFC-E-DAA-TN76707 , American Astronomical Society Meeting; Jan 04, 2020 - Jan 08, 2020; Honolulu, HI; United States
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  • 4
    Publication Date: 2020-01-15
    Description: No abstract available
    Keywords: Astrophysics
    Type: MSFC-E-DAA-TN76756 , American Astronomical Society Meeting; Jan 04, 2020 - Jan 08, 2020; Honolulu, HI; United States
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