van der Tak Floris F S
SRON, Landleven 12, 9747 AD Groningen, The Netherlands.
Philos Trans A Math Phys Eng Sci. 2006 Nov 15;364(1848):3101-6. doi: 10.1098/rsta.2006.1879.
The H3+ and H2D+ ions are important probes of the physical and chemical conditions in regions of the interstellar medium where new stars are forming. This paper reviews how observations of these species and of heavier ions such as HCO+ and H3O+ can be used to derive chemical and kinematic properties of nearby pre-stellar cores and the cosmic ray ionization rate towards more distant regions of high-mass star formation. Future prospects in the field are outlined at the end.
H3+和H2D+离子是星际介质中恒星形成区域物理和化学条件的重要探测器。本文综述了如何利用对这些离子以及诸如HCO+和H3O+等较重离子的观测，来推导附近原恒星核的化学和运动学性质，以及朝向更遥远的高质量恒星形成区域的宇宙射线电离率。文末概述了该领域的未来前景。
