SuperWASP observations of pulsating Am stars
- Creators
- Smalley, B.
-
Kane, S. R.
Abstract
We have studied over 1600 Am stars at a photometric precision of 1 mmag with SuperWASP photometric data. Contrary to previous belief, we find that around 200 Am stars are pulsating δ Sct and γ Dor stars, with low amplitudes that have been missed in previous, less extensive studies. While the amplitudes are generally low, the presence of pulsation in Am stars places a strong constraint on atmospheric convection, and may require the pulsation to be laminar. While some pulsating Am stars have been previously found to be δ Sct stars, the vast majority of Am stars known to pulsate are presented in this paper. They will form the basis of future statistical studies of pulsation in the presence of atomic diffusion.
Additional Information
© 2011 ESO. Received 10 May 2011. Accepted 30 June 2011. An extended version of Table 1 containing all the detected frequencies and amplitudes is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/535/A3. The WASP project is funded and operated by Queen's University Belfast, the Universities of Keele, St. Andrews and Leicester, the Open University, the Isaac Newton Group, the Instituto de Astrofisica de Canarias, the South African Astronomical Observatory and by STFC. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. Some of the data presented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts.Attached Files
Published - Smalley2011p17091Astron_Astrophys.pdf
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Additional details
- Eprint ID
- 29283
- Resolver ID
- CaltechAUTHORS:20120214-114030022
- Queen's University Belfast
- Universities of Keele
- University of St. Andrews
- Open University
- Isaac Newton Group
- Instituto de Astrofisica de Canarias (IAC)
- South African Astronomical Observatory
- Science and Technology Facilities Council (STFC)
- NASA
- NAS5-26555
- NASA
- NNX09AF08G
- University of Leicester
- Created
-
2012-02-14Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)