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The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b

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arxiv 0707.1908 v2 pith:MNSRTVH4 submitted 2007-07-13 astro-ph

The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b

Joshua N. Winn , Matthew J. Holman , Gaspar A. Bakos , Andras Pal , John Asher Johnson , Peter K.G. Williams , Avi Shporer , Tsevi Mazeh
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Jose Fernandez David W. Latham Michael Gillon
This is my paper
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keywords hat-p-1btimesgiantpropertiestransitsaccordaccuracyalthough
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We present photometry of the G0 star HAT-P-1 during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 +/- 0.05 times larger and its surface gravity is 2.7 +/- 0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 min and do not depart significantly from a constant period.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Observing a 542-day transiting giant with large TTVs: The 2025 transit of HIP 41378 f and new constraints on the outer system

    astro-ph.EP 2026-06 unverdicted novelty 5.0

    New 2025 transit timing of HIP 41378 f shows a 7-hour early arrival consistent with TTVs; N-body modeling with TRADES refines ephemerides for planets d, e, and f.

  2. Observing a 542-day transiting giant with large TTVs: The 2025 transit of HIP 41378 f and new constraints on the outer system

    astro-ph.EP 2026-06 accept novelty 5.0

    New 2025 transit timing for HIP 41378 f confirms large TTVs and is combined with prior data on planets d and e in an N-body model to update ephemerides and predict future transits.