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The search for ZZ Ceti stars in the original Kepler mission
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Greiss, S., Hermes, J. J., Gänsicke, B. T. (Boris T.), Steeghs, D., Bell, Keaton J., Raddi, R., Tremblay, Pier-Emmanuel, Breedt, E., Ramsay, G., Koester, D., Carter, P. J., Vanderbosch, Z., Winget, D. E. and Winget, K. I. (2016) The search for ZZ Ceti stars in the original Kepler mission. Monthly Notices of the Royal Astronomical Society, 457 (3). pp. 2855-2863. doi:10.1093/mnras/stw053 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/stw053
Abstract
We report the discovery of 42 white dwarfs in the original Kepler mission field, including nine new confirmed pulsating hydrogen-atmosphere white dwarfs (ZZ Ceti stars). Guided by the Kepler-Isaac Newton Telescope Survey, we selected white dwarf candidates on the basis of their U − g, g − r, and r − Hα photometric colours. We followed up these candidates with high-signal-to-noise optical spectroscopy from the 4.2-m William Herschel Telescope. Using ground-based, time series photometry, we put our sample of new spectroscopically characterized white dwarfs in the context of the empirical ZZ Ceti instability strip. Prior to our search, only two pulsating white dwarfs had been observed by Kepler. Ultimately, four of our new ZZ Cetis were observed from space. These rich data sets are helping initiate a rapid advancement in the asteroseismic investigation of pulsating white dwarfs, which continues with the extended Kepler mission, K2.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Library of Congress Subject Headings (LCSH): | Astroseismology, White dwarf stars, Astronomical photometry | ||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
Publisher: | Oxford University Press | ||||||||
ISSN: | 0035-8711 | ||||||||
Official Date: | 16 February 2016 | ||||||||
Dates: |
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Volume: | 457 | ||||||||
Number: | 3 | ||||||||
Page Range: | pp. 2855-2863 | ||||||||
DOI: | 10.1093/mnras/stw053 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 10 March 2017 | ||||||||
Date of first compliant Open Access: | 14 March 2017 | ||||||||
Funder: | Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC), United States. National Aeronautics and Space Administration (NASA), Science and Technology Facilities Council (Great Britain) (STFC), Norman Hackerman Advanced Research Program (NHARP) | ||||||||
Grant number: | FP/2007-2013 (FP7), 320964 (ERC), HST-HF2-51357.001-A (NASA), PP/D005914/1 (STFC), ST/I001719/1 (STFC), AST-0909107 (NSF), AST-1312983 (NSF), 003658-0252-2009 (NHARP), 11-KEPLER11-0050 (NASA) |
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