arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1206.3585astro-ph.EPastro-ph.SR
收藏

WASP-19 b二次日食的z '波段地基探测

z'-band Ground-Based Detection of the Secondary Eclipse of WASP-19b

J. R. Burton, C. A. Watson, S. P. Littlefair, V. S. Dhillon, N. P. Gibson, T. R. Marsh, D. Pollacco

摘要:

我们提出了基于地面的探测凌日系外行星WASP-19 b的二次日食。使用安装在NTT上的ULTRACAM三光束CCD相机在斯隆z '波段进行观察。测量显示0.088 \pm 0.019%的日食深度,与之前基于H和K波段测量的预测相匹配。我们详细讨论了我们的方法,以消除由于数据集的系统性所产生的错误,除了拟合模型过境我们的数据。这个拟合返回了一个日食中心T0,为2455578.7676 HJD,与圆形轨道一致。我们的二次日食深度的测量也比较模型大气的WASP-19 b,并发现与以前的测量在较长的波长为我们研究的模型大气是一致的。

英文摘要:

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 NTT. The measurement shows a 0.088\pm0.019% 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 centre, T0, 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑