论文标题
罗斯15上耀斑的光度和光谱研究
Photometric and Spectroscopic Study of Flares on Ross 15
论文作者
论文摘要
我们对Ross 15进行了光度和光谱观测，以进一步研究这个较少观察到的耀斑恒星的耀斑特性。在128小时的光度观测中检测到总共28个B波段耀斑，导致总耀斑速率为0.22（+-0.04）小时^-1，比以前的工作更准确。我们给出了B波段耀斑的能量范围（10^29.5-10^31.5 ERG）和恒星的FFD。在相同的能量范围内，FFD低于GJ 1243（M4）和YZ CMI（M4.5）的FFD，大约在三个M5型恒星的中间，高于光谱类型的平均FFD> = M6。我们首次进行了Ross 15，同时进行了高效光谱和光度观测，从而导致了样品中最有能量的耀斑的检测。在耀斑期间检测到连续体和Balmer线之间具有显着相关性的强度增强，这与类似光谱类型的其他深入研究的耀斑恒星相同。
We conducted photometric and spectroscopic observations for Ross 15 in order to further study the flare properties of this less observed flare star. A total of 28 B-band flares are detected in 128 hours of photometric observations, leading to a total flare rate of 0.22(+-0.04) hour^-1, more accurate than that provided by previous work. We give the energy range of the B-band flare (10^29.5 - 10^31.5 erg) and the FFD for the star. Within the same energy range, the FFD are lower than that of GJ 1243 (M4) and YZ CMi (M4.5), roughly in the middle of those of three M5-type stars and higher than the average FFDs of spectral types >= M6. We performed, for the first time to Ross 15, simultaneous high-cadence spectroscopic and photometric observations, resulting in detection of the most energetic flare in our sample. The intensity enhancements of the continuum and Balmer lines with significant correlations between them are detected during the flare, which is same with that of the other deeply studied flare stars of the similar spectral type.
