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Long-Term Transit Timing Monitoring and Refined Light Curve Parameters of HAT-P-13b

Fulton, Benjamin J. and Shporer, Avi and Winn, Joshua N. and Holman, Matthew J. and Pál, András and Gazak, J. Zachary (2011) Long-Term Transit Timing Monitoring and Refined Light Curve Parameters of HAT-P-13b. Astronomical Journal, 142 (3). Art. No. 84. ISSN 0004-6256.

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We present 10 new transit light curves of the transiting hot Jupiter HAT-P-13b, obtained during two observational seasons by three different telescopes. When combined with 12 previously published light curves, we have a sample consisting of 22 transit light curves, spanning 1041 days across four observational seasons. We use this sample to examine the recently observed large-amplitude transit timing variations (TTVs) by Pál et al. and give refined system parameters. We find that the transit times are consistent with a linear ephemeris, with the exception of a single transit time, from UT 2009 November 5, for which the measured mid-transit time significantly deviates from our linear ephemeris. The nature of this deviation is not clear, and the rest of the data do not show any significant TTVs.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Fulton, Benjamin J.0000-0003-3504-5316
Shporer, Avi0000-0002-1836-3120
Winn, Joshua N.0000-0002-4265-047X
Additional Information:© 2011 The American Astronomical Society. Received 2011 May 16; accepted 2011 July 14; published 2011 August 12. A.S. acknowledges support from NASA Grant Number NNX10AG02A. M.H. and J.W. gratefully acknowledge support from the NASA Origins program through award NNX09AB33G. A.P. is thankful for the support of the ESA grant PECS 98073, and the János Bolyai Research Scholarship of the HAS. This paper uses observations obtained with facilities of the Las Cumbres Observatory Global Telescope. The Byrne Observatory at Sedgwick (BOS) is operated by the Las Cumbres Observatory Global Telescope Network and is located at the Sedgwick Reserve, a part of the University of California Natural Reserve System. PyRAF is a product of the Space Telescope Science Institute, which is operated by AURA for NASA. Facilities: FTN (Spectral) - Faulkes Telescope North, FLWO:1.2m (KeplerCam) - Fred Lawrence Whipple Observatory's 1.2 meter Telescope, LCOGT (BOS) - Las Cumbres Observatory Global Telescope Note added in proof. After the submission of this work, Nascimbeni et al. (2011) appeared on arXiv. The five new light curves from Season 5 presented in that work are critical to ruling out a nonlinear ephemeris.
Funding AgencyGrant Number
European Space Agency (ESA)PECS 98073
János Bolyai Research ScholarshipUNSPECIFIED
Subject Keywords:planetary systems – stars: individual (HAT-P-13)
Issue or Number:3
Record Number:CaltechAUTHORS:20180816-102425465
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Official Citation:Benjamin J. Fulton et al 2011 AJ 142 84
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88852
Deposited By: Tony Diaz
Deposited On:16 Aug 2018 17:32
Last Modified:03 Oct 2019 20:10

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