Photometric follow-up of the transiting planet WASP-1b
- Creators
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Shporer, A.
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Tamuz, O.
- Zucker, S.
- Mazeh, T.
Abstract
We report on photometric follow-up of the recently discovered transiting planet WASP-1b. We observed two transits with the Wise Observatory 1-m telescope, and used a variant of the Eclipsing Binary Orbit Program (EBOP) code together with the Sys-Rem detrending approach to fit the light curve. Assuming a stellar mass of 1.15 M_⊙, we derived a planetary radius of R_p= 1.40 ± 0.06R_J and mass of M_p= 0.87 ± 0.07M_J. An uncertainty of 15 per cent in the stellar mass results in an additional systematic uncertainty of 5 per cent in the planetary radius and of 10 per cent in planetary mass. Our observations yielded a slightly better ephemeris for the centre of the transit: T_c [HJD]= (245 4013.3127 ± 0.0004) +N_(tr)(2.51996 ± 0.00002). The new planet is an inflated, low-density planet, similar to HAT-P-1b and HD 209458b.
Additional Information
© 2007 The Authors. Journal compilation © 2007 RAS. In original form 2006 October 18. Received 2007 January 16. Accepted 2007 January 22. First published online April 11, 2007. We would like to thank Efi Hoory for his dedicated work while observing WASP-1 on the night of 2006 October 9. We also wish to thank Elia Leibowitz and Liliana Formiggini for allowing us to use their telescope time on the night of 2006 October 4. We thank the anonymous referee for his thorough reading of the paper and his comments which allowed us to improve this paper. This work was supported by the Israeli Science Foundation through Grant No. 03/323. This research has made use of NASA's Astrophysics Data System Abstract Service and of the SIMBAD data base, operated at CDS, Strasbourg, France.Attached Files
Published - 1296.full.pdf
Submitted - 0610556.pdf
Supplemental Material - mnras0376-1296-SD1.pdf
Files
Additional details
- Eprint ID
- 71903
- Resolver ID
- CaltechAUTHORS:20161109-163957800
- 03/323
- Israel Science Foundation
- Created
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2016-11-11Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field