Welcome to TESS Asteroseismic Science Operations Center

The TASOC web pages are not being maintained - use at your own risk!

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.


16th Jan 2024: Reducing Data Search Options

As a step in the discontinuation of the maintenance of the TASOC database, it will soon no longer be possible to access data products generated by the TESS mission via the Data Search tab. We refer users to the MAST archive where all these data are available.
The TASOC/T'DA reduced data will still be available (and can also be accessed via the Bundles tab).

4th Apr 2023: TASC GI Cycle 6 Coordination

The TESS Guest Investigator (GI) office is soliciting proposals for the second year of the second extended mission. 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. More information on the GI program (including a proposal template) can be found here.

The proposal deadline for Cycle 6 is Friday, April 14 2023, at 4:30pm US Eastern Time.

Similar to previous cycles, we set up a GI coordination page on the TASOC Wiki to coordinate the submission of TASC GI 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 6 GI coordination page (https://tasoc.dk/gi/Cycle6)
  2. Submit your target lists on the TASC Cycle 6 Proposal Submission Page. Note that 2-min and 20-sec target lists need to be submitted separately.

If you have any questions or need help with putting together TASC GI proposals please don’t hesitate to contact the co-chairs of the TASC GI Coordinated Activity (Dan Huber and Marc Pinsonneault).

16th Mar 2023: T'DA11 Announcement

The TESS Data for Asteroseismology (T'DA) workshop series focused on developing a TESS pipeline optimized for asteroseismology by bringing together people from across TASC to brainstorm, compare, and implement ideas for data preparation.

We would like to restart the T'DA workshop series with T'DA 11, at Konkoly Observatory, Budapest, Hungary from 24-26 May. Remote participation will be available, but we encourage in-person attendance when possible.

Read more here


25th Jun 2024: TESS Weekly Bulletin: June 26th

Welcome TESS followers to our latest news bulletin!

This week, we are looking at three recent papers from the archive. Enjoy!

9 new M Dwarf Planet Candidates from TESS Including 5 Gas Giants (Eschen & Kunimoto 2024) :

The relatively small size of M dwarfs makes them well-suited targets for the detection …

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13th Jun 2024: Deadline extended for the call for community input into the TESS Extended Mission Planning

The TESS mission invites the community’s input on science cases that should be prioritized in TESS’s future extended missions. The format of requested input is a short 1-2 paragraph “science pitch” submitted via a Google Form, similar to the science pitches solicited in 2023 for the definition of …

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30th May 2024: TESS Weekly Bulletin: May 30th

Welcome TESS followers to our latest news bulletin!

This week, we are looking at three recent papers from the archive. Enjoy!

The evolution of stellar X-ray activity and angular momentum as seen by eROSITA, TESS, and Gaia (Stassun & Kounkel 2024) :

X-ray activity and stellar rotation are critical calibrators for constraining …

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