Asteroseismology of solar-type stars with K2: detection of oscillations in C1 data

Research output: Contribution to journalArticlepeer-review

Authors

  • S. Basu
  • L. A. Buchhave
  • D. Huber
  • D. W. Latham
  • C. A. Latham
  • A. Serenelli
  • H. M. Antia
  • T. Appourchaux
  • Warrick Ball
  • Othman Benomar
  • L. Casagrande
  • J. Christensen-Dalsgaard
  • H. R. Coelho
  • O. L. Creevey
  • Yvonne Elsworth
  • R. A. Garcia
  • P. Gaulme
  • Saskia Hekker
  • T. Kallinger
  • C. Karoff
  • S. D. Kawaler
  • H. Kjeldsen
  • M. S. Lundkvist
  • F. Marcadon
  • S. Mathur
  • Andrea Miglio
  • B. Mosser
  • C. Régulo
  • I. W. Roxburgh
  • V. Silva Aguirre
  • D. Stello
  • K. Verma
  • T. R. White
  • T. R. Bedding
  • T. Barclay
  • D. L. Buzasi
  • S. Deheuvels
  • L. Gizon
  • G. Houdek
  • S. B. Howell
  • David Salabert
  • D. R. Soderblom

Colleges, School and Institutes

Abstract

We present the first detections by the NASA K2 Mission of oscillations in solar-type stars, using short-cadence data collected during K2 Campaign 1 (C1). We understand the asteroseismic detection thresholds for C1-like levels of photometric performance, and we can detect oscillations in subgiants having dominant oscillation frequencies around 1000 μHz. Changes to the operation of the fine-guidance sensors are expected to give significant improvements in the high-frequency performance from C3 onwards. A reduction in the excess high-frequency noise by a factor of 2.5 in amplitude would bring main-sequence stars with dominant oscillation frequencies as high as ≃2500 μHz into play as potential asteroseismic targets for K2.

Details

Original languageEnglish
Pages (from-to)1038-1044
Number of pages7
JournalPublications of the Astronomical Society of the Pacific
Volume127
Issue number956
Early online date9 Sep 2015
Publication statusPublished - 1 Oct 2015

Keywords

  • astro-ph.SR