【摘 要】
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Even though globular clusters(GCs)have long been considered prototypical simple spherical systems,their origin is still strongly debated.Internal kinematics,acting as fossil record of the formation pr
【出 处】
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国际天文学联合会第312次专题会议
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Even though globular clusters(GCs)have long been considered prototypical simple spherical systems,their origin is still strongly debated.Internal kinematics,acting as fossil record of the formation processes,can help us unravel their origin as well as to search for the presence of exotic objects such as intermediate mass black holes(IMBHs)in their central regions.Two main strategies are employed in studies of the internal kinematics of GCs: 1)measurements of velocities of resolved stars(line-of-sight velocities or proper motions)2)integrated kinematic measurements with IFU spectroscopy.Unsettlingly,these different methods can give significantly different observational outcomes when applied to the same object.Therefore,starting from realistic Monte Carlo simulations of GCs we have produced a set of exhaustive mock observations of all observational strategies.Using these mock observations we are able to determine several effects that lead to the profound differences between the observational methods.We will describe these effects and propose procedures to mitigate them.We will show that these effects must be fully taken into account to correctly interpret subtle kinematic signatures usually ascribed to the presence or absence of IMBHs.
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