Welcome to TESS Asteroseismic Science Operations Center

The TESS Asteroseismic Science Operations Center (TASOC) provides asteroseismological data from the NASA TESS mission to astronomers who are members of the TESS Asteroseismic Science Consortium (TASC). It is also the platform used to facilitate the international collaborations within TASC.

If you are a member of TASC, please log in below...

In order to have access to TASOC you have to be a member of TASC. Please see the "New TASC member" page on how to become a member.


10th May 2022: TASC6 contributed talk abstract deadline: 16 May

The deadline for contributed talks for the TASC6/KASC13 workshop is on Monday 16 May. All details are available on the conference website: https://fys.kuleuven.be/ster/events/conferences/2020/tasc6

9th Mar 2022: TASC GI Cycle 5 Coordination

The TESS Guest Investigator (GI) office is soliciting proposals for the first year of the second extended mission, which is planned to start in September 2022. Like in the first extended mission TASC does not have reserved 2-minute and 20-second cadence targets, and hence GI proposals from TASC are important to ensure the selection of targets for asteroseismology. Note that the cadence for full-frame images in the second extended mission will be decreased to 200 seconds (Nyquist frequency of 216 c/d or 2500 µHz). More information on the GI program (including a proposal template) can be found here.

The proposal deadline for Cycle 5 is .

Similar to previous cycles, we set up a Cycle 5 GI coordination page on the TASOC Wiki to coordinate the submission of TASC Cycle 5 proposals.

If you are planning to submit a GI proposal and would like to coordinate, we recommend the following steps:

  1. Add your proposal information on the Cycle 5 GI coordination page. Teams with similar science cases are encouraged to coordinate. Non-US TASC members are encouraged to approach US-based TASC members (who are eligible for funding).
  2. Submit your target lists on the TASC Cycle 5 Proposal Submission Page. Note that 2-min and 20-sec target lists need to be submitted separately.

If you have any questions, concerns, or need help with putting together TASC GI proposals please contact the co-chairs of the TASC GI Coordinated Activity.

26th Oct 2021: Sixth data release of TESS Data for Asteroseismology for Sectors 14+15+26 - including the Kepler field of view

We are pleased to announce the sixth release of TESS data for asteroseismology from the TASC Coordinated Activity T'DA.

For this release, raw and systematics corrected photometry is provided based on Full Frame Image (FFI; 30-min) and Target Pixel File (TPF; 2-min) data from TESS Sectors 14+15+26. These TESS Sectors overlaps with the original Kepler field of view, and therefore provide unique oppotunities for asteroseismology of previously known favorite targets.

All data is accessible via the TASOC website. In total a little over 9.7 million light curves are provided with this release.

This release, like the previous ones, provide systematics corrected data using two different methods: Co-trending Basis Vectors (CBVs) and Ensemble photometry. Most observed targets will thus have two light curves, and we encourage you to check both corrections for the optimal light curve for your science. You can read more about the photometric pipeline and the two correction methods, and their individual pros and cons, in the T'DA papers, which can be found here: Photometry, Corrections.

For more details, please read the data release notes here.


5th Aug 2022: TESS Weekly Bulletin: Aug 5th

Welcome TESS followers to our latest news bulletin! This week, we are looking at three recent papers from the archive. Enjoy!

The HD 93963 A transiting system: A 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS (Serrano et al., 2022) :

HD 93963 A is …

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1st Aug 2022: TESS Cycle 5 selections

Hello and welcome TESS followers to this special news bulletin! Here we will discuss the results of the Cycle 5 proposal season.

The Cycle 5 review was held earlier this year in May, with over 100 proposals submitted. Of these proposals 3 were Key, 7 were large, 77 small, and …

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22nd Jul 2022: TESS Weekly Bulletin: July 22th

Welcome TESS followers to our latest news bulletin! This week, we are looking at three recent papers from the archive. Enjoy!

Eccentric orbits and apsidal motion in the eclipsing binaries EK Cep and HS Her (Latkovic et al., 2022) :

Young detached eclipsing binary stars are important systems in which to …

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TESS mission clock

Launch Countdown:

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