[Kepler]

The Kepler Asteroseismic Science Operations Center provides asteroseismological data from the NASA Kepler mission to astronomers who are members of the Kepler Asteroseismic Science Consortium (KASC).

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In order to have access to the Kepler Asteroseismic data you have to be a member of KASC. Please see the "New KASC member" page on how to become a member.

News

27th Apr 2016: Problems with download of older data releases

Due to computer system-work in Aarhus, some of the older versions of Kepler/K2 data is currently not available for download through KASOC. The newer data releases are not affected. We will try to keep you up-to-date when everything is back online again.

27th Apr 2016: K2 campaign 7 data available

The data from K2 campaign 7 is now available for download, both from the "Data Search" interface and in "Bundles" for the cluster Ruprecht 147, trojan asteroids and ex-planet Pluto. Enjoy!

7th Mar 2016: Long Cadence Data Release 25 is available

All of the long cadence data from Data Release 25 has now been made available through KASOC. Have a look at the documentation to see what the changes are, compared to the earlier DR24 release.

Kepler & K2 News

29th Apr 2016: More community generated light curves available at MAST

The Oxford Exoplanets group announces the release at MAST of a new set of K2 light curve High Level Science Products. The Oxford group has applied the K2 Systematics Correction (K2SC) Gaussian Process-based detrending algorithm to project generated long-cadence light curves from Campaigns 3 to 6. This algorithm simultaneously models astrophysical variability and pointing systematics, enabling the user to disentangle the two and remove either or both. These light curves are therefore well-suited to searches for transits and other short-lived events in the light curves of variable active stars, or to studying stellar variability. Additional campaigns will be added as the data becomes available and the source code is available from Github.

This release complements the K2 data already hosted at the MAST, which includes the project generated data products, and community generated High Level Science Products.

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23rd Apr 2016: K2 Campaign 7 data available

Target pixel files for long and short cadence targets for K2 Campaign 7 are now available for download from the K2 data archive at MAST. Light curves are also available for long cadence targets.

In Campaign 7 there was a significant drop in the number of targets observed relative to previous campaigns. This drop was because the number of targets we can observe is a function of our on-board compression efficiency. The extremely dense nature of the Campaign 7 field forced us to assume a poorer compression estimate than we used for earlier campaigns.

This target list consists of 13,469 standard long cadence and 72 standard short cadence targets. There were also several custom targets. We tiled a region around the open cluster Ruprecht 147 using 60 individual pixel masks. In addition, we included large pixel masks over 3 Trojan/Hilda Asteroids and the (dwarf) planet Pluto. Bodies within our own Solar System move relative to the celestial sphere and are covered by long streaks of pixels. We tiled just a subset of the pixels that make up the path the Trojans/Hildas move along. These observations are in long cadence. Finally, we also observed 10 very bright stars by targeting just the central region of pixels around these targets but excluding the bleed columns.

Detailed data release notes are available on the Kepler & K2 Science Center website. We encourage users to read these carefully; in particular, note that there was an increase in roll drift in Campaign 7 due to the use of an alternate low-gain antenna during science data collection. This increase in roll motion, combined with an extremely crowded field, impacted the photometry produced by the Kepler pipeline. Additional details are available in the full data release notes.

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22nd Apr 2016: Kepler recovered and K2 mission underway again

The Kepler spacecraft has officially been recovered since it was first discovered to be in Emergency Mode on April 7. Science operations are now resuming as planned, with K2 Campaign 9 beginning today, April 22. Campaign 9 involves the spacecraft looking toward the Galactic Center to primarily search for gravitational microlensing events. In addition to microlensing targets, a number of Director's Discretionary Targets (DDTs) were approved. The full target list for Campaign 9 can be found here.

Additional details on the recovery process can be found in the Mission Manager Updates.

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Recently published scientific publications

  • V. Van Eylen: What asteroseismology can do for exoplanets: Kepler-410A b is a Small Neptune in an eccentric orbit consistent with low obliquity
    Updated: Tue 26th April 2016 12:23.
  • A. Jimenez: Analysis of the acoustic cut-off frequency and the HIPs in 6 Kepler stars with stochastically excited pulsations
    Updated: Mon 25th April 2016 15:27.
  • M. S. Lundkvist: Hot super-Earths stripped by their host stars
    Updated: Mon 18th April 2016 13:32.
  • Zhijia Tian: Asteroseismic analysis of solar-like star KIC 6225718: constraints on stellar parameters and core overshooting
    Updated: Fri 15th April 2016 04:29.
  • T. Kallinger: Precise stellar surface gravities from the time scales of convectively driven brightness variations
    Updated: Wed 6th April 2016 10:56.
  • Ehsan Moravveji: Tight asteroseismic constraints on core overshooting and diffusive mixing in the slowly rotating pulsating B8.3V star KIC 10526294
    Updated: Wed 6th April 2016 10:53.
  • DENNIS STELLO: MODE SUPPRESSION OF QUADRUPOLE AND OCTUPOLE MODES IN RED GIANTS OBSERVED BY KEPLER
    Updated: Thu 31st March 2016 01:10.

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