论文标题
木星大小系外行星的多色光度法和参数估计； TRE-3B，WASP-2B和HATP-30B
Multi-color photometry and parameters estimation of Jupiter-sized exoplanets; TRES-3b, WASP-2b and HATP-30b
论文作者
论文摘要
当准确表征外星人行星时，过境光曲线的精确和频繁的光度随访研究是必不可少的。我们提出了三个传输“热木星”，TRE-3B，WASP-2B和HAT-P-30B（WASP-51B）的新的多波长光度法。数据是从塔尔顿州立大学的0.8米望远镜中获取的。当与文献数据结合使用时，我们可以以相应的方式重新确定系统参数。我们开发了GCX还原管道和TAP，建模和光曲线拟合包装，以分析提取的光曲线。然后，我们使用加权平均结果来估计三个系外行星系统的BVRI过滤器的参数，并将其与以前的结果进行了比较。我们得出结论，我们确定的参数已与先前的研究达成一致。从我们的研究中，质量为MP = 1.773 MJUP且RP = 1.305 RJUP的TRE-3B似乎较小，而HAT-P-30B的质量为MP = 0.7006mjup且RP = 1.5109RJUP似乎是散布的“热木木工”。此外，我们将宽带光敏分析的结果与先前的研究进行了比较，以搜索过境深度波长依赖性。我们在TRE-3B和WASP-2B的光波长（R-Band中的WASP-2B除外）发现了扁平光谱，表明其大气中存在云。 forwasp-2b，rp/r*值为0.14215，比以前的工作高0.14 $σ$。 HAT-P-30B的B滤波器的半径明显更大，RP = 0.161246RJUP，由RP/R* = 0.1334产生，其次是由大气尺度高度值确认的，H = 1450km，表明HAT-P-30b是一个夸大的“热木星”。
Precise and frequent photometric follow-up studies of transit light curves are indispensable when accurately characterizing extrasolar planets. We present new multi-wavelength photometry of three transiting "Hot Jupiters", TrES-3b, WASP-2b and HAT-P-30b (WASP-51b). Data were acquired from an 0.8 meter telescope at Tarleton State University. When combined with literature data, allowed us to redetermine system parameters in a corresponding way. We developed GCX reduction pipeline and TAP, modeling and light curve fitting package to analyze the extracted light curves. We then used weighted mean results to estimate the parameters from BVRI filters for three exoplanetary systems and compared them to previous results. We concluded our determined parameters are agreed with previous studies. From our study, TreS-3b with a mass of Mp = 1.773 Mjup and Rp = 1.305 Rjup appears slightly less massive, while HAT-P-30b, which has a mass of Mp = 0.7006Mjup and Rp = 1.5109Rjup appears to be a bloated "Hot Jupiter". Additionally, we compared the results of our broadband photmetric analysis with the previous studies to search for transit depth wavelength dependence. We found a flat spectrum across optical wavelengths (except WASP-2b in R-band) for TrES-3b and WASP-2b, indicating the presence of clouds in their atmospheres. ForWASP-2b, Rp/R* value was 0.14215 which was 0.14$σ$ higher than in the previous work. HAT-P-30b had a significantly larger radius in B filter with Rp = 0.161246Rjup, resulting from Rp/R* = 0.1334, which was secondarily confirmed by the atmospheric scale height value, H = 1450km, indicating that HAT-P-30b is an inflated "Hot Jupiter".
