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Oscillating red giants observed during campaign 1 of the Kepler K2 mission: New prospects for galactic archaeology

Stello, Dennis; Huber, D; Sharma, S; Johnson, Jennifer A; Lund, Mikkel; Handberg, Rasmus; Buzasi, Derek; Silva Aguirre, V; Chaplin, W. J.; Pinsonneault, Marc H; Casagrande, Luca; Serenelli, Aldo

Description

NASA's re-purposed Kepler mission - dubbed K2 - has brought new scientific opportunities that were not anticipated for the original Kepler mission. One science goal that makes optimal use of K2's capabilities, in particular its 360° ecliptic field of view, is galactic archaeology - the study of the evolution of the Galaxy from the fossil stellar record. The thrust of this research is to exploit high-precision, time-resolved photometry from K2 in order to detect oscillations in red giant stars....[Show more]

dc.contributor.authorStello, Dennis
dc.contributor.authorHuber, D
dc.contributor.authorSharma, S
dc.contributor.authorJohnson, Jennifer A
dc.contributor.authorLund, Mikkel
dc.contributor.authorHandberg, Rasmus
dc.contributor.authorBuzasi, Derek
dc.contributor.authorSilva Aguirre, V
dc.contributor.authorChaplin, W. J.
dc.contributor.authorPinsonneault, Marc H
dc.contributor.authorCasagrande, Luca
dc.contributor.authorSerenelli, Aldo
dc.date.accessioned2016-06-14T23:19:06Z
dc.identifier.issn2041-8205
dc.identifier.urihttp://hdl.handle.net/1885/102751
dc.description.abstractNASA's re-purposed Kepler mission - dubbed K2 - has brought new scientific opportunities that were not anticipated for the original Kepler mission. One science goal that makes optimal use of K2's capabilities, in particular its 360° ecliptic field of view, is galactic archaeology - the study of the evolution of the Galaxy from the fossil stellar record. The thrust of this research is to exploit high-precision, time-resolved photometry from K2 in order to detect oscillations in red giant stars. This asteroseismic information can provide estimates of stellar radius (hence distance), mass, and age of vast numbers of stars across the Galaxy. Here we present the initial analysis of a subset of red giants, observed toward the north galactic gap, during the mission's first full science campaign. We investigate the feasibility of using K2 data for detecting oscillations in red giants that span a range in apparent magnitude and evolutionary state (hence intrinsic luminosity). We demonstrate that oscillations are detectable for essentially all cool giants within the range ∼1.9-3.2. Our detection is complete down to , which results in a seismic sample with little or no detection bias. This sample is ideally suited to stellar population studies that seek to investigate potential shortcomings of contemporary Galaxy models.
dc.publisherInstitute of Physics Publishing Ltd.
dc.rightsAuthor/s retain copyright
dc.sourceAstrophysical Journal Letters
dc.titleOscillating red giants observed during campaign 1 of the Kepler K2 mission: New prospects for galactic archaeology
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume809
dc.date.issued2015
local.identifier.absfor020104 - Galactic Astronomy
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationa383154xPUB3252
local.type.statusPublished Version
local.contributor.affiliationStello, Dennis, University of Sydney
local.contributor.affiliationHuber, D, University of Sydney
local.contributor.affiliationSharma, S, University of Sydney
local.contributor.affiliationJohnson, Jennifer A, Ohio State University
local.contributor.affiliationLund, Mikkel, Aahus University
local.contributor.affiliationHandberg, Rasmus, Aarhus University
local.contributor.affiliationBuzasi, Derek, Florida Gulf Coast University
local.contributor.affiliationSilva Aguirre, V, Aarhus University
local.contributor.affiliationChaplin, W. J., Aarhus University
local.contributor.affiliationPinsonneault, Marc H, Ohio State University
local.contributor.affiliationCasagrande, Luca, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSerenelli, Aldo, Instituto de Ciencias del Espacio (CSIC-IEEC)
local.bibliographicCitation.issue1
local.identifier.doi10.1088/2041-8205/809/1/L3
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2016-06-14T08:32:28Z
local.identifier.scopusID2-s2.0-84939208390
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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