某些热白矮星光球中金属的起源
On the Origin of Metals in Some Hot White Dwarf Photospheres
摘要：
我们曾在一个热DA白矮星20 000 K < Teff < 50 000 K的样品中寻找尘埃和气体盘的证据，但没有成功。虽然它们的大气层被重元素污染，但我们还不能令人信服地和决定性地表明，这些天体中的任何一个都在从旧太阳系中被破坏的小行星周围的物质中吸积金属。
英文摘要：
We have searched for evidence for dust and gas disks at a sample of hot DA white dwarfs 20 000K < Teff < 50 000K, without success. Although their atmospheres are polluted with heavy elements, we cannot yet convincingly and conclusively show that any of these objects is accreting metals from surrounding material derived from disrupted minor planets in an old solar system.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
