[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

3rd Jan 2017: K2 campaign 10 data available

Data from campaign 10 of K2 has been made available on KASOC. The data release notes have not yet been made available, but we will provide it as soon as it is available.

Please note that there are a few unique features in the C10 data:

  • The first six days of data, dubbed C10.1, were collected with a pointing error of 3.3 pixels from the nominal field-of-view, so they were only processed through CAL to make "Type 1" target pixel files. Among other things, this means that there are no light-curves produced by the K2 Science Office.
  • The remainder of the campaign, dubbed C10.2, was processed through the entire photometry pipeline, creating "Type 2" target pixel files and long-cadence light curves.
  • Module 4 was lost part way through C10.2, which powered off the photometer and produced a 14-day data gap.

14th Dec 2016: Scheduled downtime

Tomorrow (15/12-2016) we will be doing some scheduled maintenance of our systems, so the KASOC website will be unavailable for a few hours. We apologize for the inconvenience.

13th Dec 2016: Reprocessed data for K2 C1

Reprocessed data for K2 Campaign 1 (Data Release 14) is now available for download.

This release corrects the short cadence pixel calibration bug previously described in the Global Erratum for Kepler Q0-Q17 & K2 C0-C5 Short-Cadence Data (KSCI-19080). The new release also includes lightcurves for all long cadence data, plus improvements to the target pixel files.

Please have a careful read of the Data Release Notes.

Kepler & K2 News

29th Dec 2016: Galactic Archeology Special Session at AAS 229

At the upcoming American Astronomical Society meeting in Grapevine, Tx there will be a special session on Galactic Archeology with K2 and Kepler. This is an exciting area of astrophysics that will only continue to grow over the coming years. The organizer of the event is Jennifer Johnson from Ohio State University and the session will take place in the Grapevine B room of the Gaylord Texan Resort & Convention Center and starts at 10am. The astract of the session below.

The exquisite lightcurves of the Kepler and K2 missions have been an unexpected boon to the field of near-field cosmology. Ages and evolutionary states can now be derived for field red giants, by combining asteroseismology with spectroscopic data. Red giants, far more luminous than the main-sequence turnoff stars usually used, allow us to probe the evolution of the whole Galaxy. Originally these investigations were restricted to a single line of sight of the Kepler field. With the failure of two of the reaction wheels and the start of the K2 program to observe many fields along the ecliptic, we now probe distinctly different Galactic populations, including the inner and outer disks, the bulge-halo interface, and far more of the Galactic halo. In K2, the Galactic Archaeology Program has been awarded the second largest number of targets, with over 50,000 stars targeted to understand the formation of the Milky Way. The data from the Kepler field has already been used to calibrate the largest age map yet made of the Galaxy, and we are just beginning to explore this vast dataset. The ongoing release of Kepler/K2 light curves and the public availability of follow-up spectra for thousands of targets over the last year alone indicates that this is an ideal time to discuss the most recent breakthroughs in the rapidly evolving field of Galactic archeologyIn this special session, we will discuss the extensive follow-up work underway to make Galactic archaeology possible, discuss how Kepler/K2 data in stellar clusters reveals the history of stellar activity, and present the pioneering results of Galactic archaeology. These include investigations of the age spread in the Galactic halo, examination of the vertical and radial age gradients in the thick and thin disk, measurement of the timescales for chemical evolution, calibration of age indicators for even larger age maps, and discussion of synergies with Gaia.

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21st Dec 2016: K2 Campaign 10 data available

The pipeline-processed data for K2 Campaign 10 are now available for download from the K2 archive at MAST.

The data were processed in two separate sets:

  • The first six days of data, dubbed C10a, were collected with a pointing error of 3.3 pixels from the nominal field-of-view, so they were only processed through CAL to make Type 1 target pixel files and collateral data files.
  • The remainder of the campaign, dubbed C10b, was processed through the entire photometry pipeline, creating Type 2 target pixel files, long-cadence light curves, and collateral data files.

The C10a files are known in the archive under Campaign number 101, and the C10b files have Campaign number 102. A search for Campaign 10 will return both sets of files.

Another complexity is that module 4 was lost part way through C10b, which powered off the photometer and produced a 14-day data gap.

The C10 data release notes are still being prepared and will be made available soon. We strongly encourage users to read the release notes carefully. This blog post will be updated with a link to the notes when they become available.

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9th Dec 2016: K2 Campaign 10 data processing complete

Pipeline processing for K2 Campaign 10 is now complete and the data are in the process of being shipped to the data archive at MAST. We anticipate that the data will become available for download on or before December 22nd.

Alongside 28,345 standard long cadence and 138 short cadence targets, the Campaign 10 science program included a large number of galaxies owing to the field's location near the north galactic pole. The extragalactic targets include the well-known quasar 3C 273.

Keep an eye on this website for an announcement of the release and the associated data release notes.

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Recently published scientific publications

  • Rhita-Maria Ouazzani: A new asteroseismic diagnostic for rotation in $\gamma$ Doradus stars
    Updated: Fri 6th January 2017 19:05.
  • Mikkel N. Lund: Asteroseismic properties of solar-type stars observed with the NASA K2 mission: results from Campaigns 1-3 and prospects for future observations
    Updated: Thu 5th January 2017 14:33.
  • Mikkel N. Lund: Asteroseismology of the Hyades with K2: first detection of main-sequence solar-like oscillations in an open cluster
    Updated: Thu 5th January 2017 14:32.
  • P. Gaulme: Testing Asteroseismic Scalings for Red Giants with Eclipsing Binaries Observed by Kepler
    Updated: Mon 28th November 2016 19:18.
  • R. Handberg: K2P2-reduced data from campaigns 0-4 of the K2 Mission
    Updated: Fri 11th November 2016 14:19.
  • J. A. Guzik: Detection of Solar-Like Oscillations, Observational Constraints, and Stellar Models for $\theta$ Cyg, the Brightest Star Observed by the Kepler Mission
    Updated: Sat 5th November 2016 22:07.
  • M. Hrudková: The discovery of a planetary candidate around the evolved low-mass Kepler giant star HD 175370
    Updated: Thu 27th October 2016 23:18.

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