協辦單位
NQU
協辦單位
Kinmen/edu
協辦單位
ASIAA
贊助單位
MOST
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名稱Title
2018天文年會
國立金門大學
5月18日至20日

論文摘要

The significant issue of low-mass stars magnetic activities studies with the Kepler data

[ Poster PS25 ]

Chia-Lung Lin (IANCU); Han-Yuan Chang (IANCU); Wing-Huen Ip (IANCU)

The habitability of exoplanets could be significantly influenced by the physical conditions, such as the flare events caused by magnetic activities, of the central stars. Most of the known habitable exoplanets orbit the low mass main sequence stars, so that M, K, G-type stars. In above reason, the magnetic activities of low mass main sequence stars is a valuable study. Maehara et al. (2013) demonstrated that the high-precision measurements of the Kepler space telescope are ideal for the investigations of superflares with energy far beyond the maximal level of solar flare events (i.e., the Carrington event in 1859). The specific-target Kepler light curve data files in binary FITS format has been derived from Target-Pixel-File (TPF). Each of the FITS files contains two primary flux information, Simple Aperture Photometry (SAP) flux with 1-sigma statistical uncertainties and the SAP which includes artifact mitigation called Pre-search Data Conditioning SAP (PDCSAP) flux with uncertainties (Smith et al. 2012; Stumpe et al. 2012). We found that the enormous differences between the detected flares parameters by analyzing SAP and the counterparts by investigating PDCSAP occur in the atypical targets while searching the hyper flares on the M dwarfs. This issue may have a significant effect on the results of flares research. In this study, with the investigation of 7 hyper flare M dwarfs, we present how differences the detected flares parameters derived from the different flux (PDCSAP & SAP) could be and which flux is more suitable for the flares studies in various condition.