z′-BAND GROUND-BASED DETECTION OF THE SECONDARY ECLIPSE OF WASP-19b

被引：26

作者：

Burton, J. R. ^{[1
]}

Watson, C. A. ^{[1
]}

Littlefair, S. P. ^{[2
]}

Dhillon, V. S. ^{[2
]}

Gibson, N. P. ^{[3
]}

Marsh, T. R. ^{[4
]}

Pollacco, D. ^{[1
]}

机构：

[1] Queens Univ Belfast, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland

[2] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[3] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[4] Univ Warwick, Dept Phys & Astron, Coventry CV4 7AL, W Midlands, England

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2012年 / 201卷 / 02期

关键词：

planets and satellites: atmospheres; planets and satellites: individual (WASP-19b); stars: solar-type; EXOPLANET WASP-19B; EXTRASOLAR PLANET; THERMAL EMISSION; GIANT PLANETS; LIGHT CURVES; HD; 209458B; ATMOSPHERES; HOT;

D O I：

10.1088/0067-0049/201/2/36

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the ground-based detection of the secondary eclipse of the transiting exoplanet WASP-19b. The observations were made in the Sloan z' band using the ULTRACAM triple-beam CCD camera mounted on the New Technology Telescope. The measurement shows a 0.088% +/- 0.019% eclipse depth, matching previous predictions based on H- and K-band measurements. We discuss in detail our approach to the removal of errors arising due to systematics in the data set, in addition to fitting a model transit to our data. This fit returns an eclipse center, T-0, of 2455578.7676 HJD, consistent with a circular orbit. Our measurement of the secondary eclipse depth is also compared to model atmospheres of WASP-19b and is found to be consistent with previous measurements at longer wavelengths for the model atmospheres we investigated.

引用

页数：10

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