【摘 要】
：
M31:the reminant of a gas-rich major merger.A 3:1 merger model reproduce:Rotation curve.Bulge-to-total mass ratio:B/T = 0.28.Scale length of thin disk Rd = 5.6 kpc.Thick disk (10 ％of total stellar ma
【机 构】
：
Paris Observarory NAOC
【出 处】
：
The Sino-French“LIA-ORIGINS”Workshop in 2014(中法“起源”天文联合实验室20
论文部分内容阅读
M31:the reminant of a gas-rich major merger.A 3:1 merger model reproduce:Rotation curve.Bulge-to-total mass ratio:B/T = 0.28.Scale length of thin disk Rd = 5.6 kpc.Thick disk (10 ％of total stellar mass).10-kpc,HI star-forming ring.Giant stream and its kinematics.Age distribution of stellar populations.
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