标题： 演化后的太阳系在 Praesepe 显示英文标题

标题： Evolved solar systems in Praesepe

摘要： 我们为11颗M45白矮星获得了近红外测光数据，以寻找尘埃碎片盘的过量信号。 所有白矮星都处于DAZ温度区域，然而我们没有在任何白矮星周围发现碎片盘的迹象。 然而，我们确定径向速度变化的白矮星WD0837+185可能有一个未分辨的T8矮星伴星，这不会表现为近红外过量。 显示英文摘要

摘要： We have obtained near-IR photometry for the 11 Praesepe white dwarfs, to search for an excess indicative of a dusty debris disk. All the white dwarfs are in the DAZ temperature regime, however we find no indications of a disk around any white dwarf. We have, however determined that the radial velocity variable white dwarf WD0837+185 could have an unresolved T8 dwarf companion that would not be seen as a near-IR excess.