Photometry and spectroscopy of HAT-P-57
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We present the discovery of HAT-P-57b, a P=2.4653 day transiting planet around a V=10.465+/-0.029mag, T_eff_=7500+/-250K main sequence A8V star with a projected rotation...
我们报道了HAT-P-57b的发现:这是一颗轨道周期P=2.4653天的凌日行星,其宿主恒星为V波段视星等10.465±0.029、有效温度(effective temperature, T_eff)7500±250K的A8V型主序星,且具有投影自转……



