标题： 星际和行星冰相关的近红外吸收特征的强度 显示英文标题

标题： The Strengths of Near-Infrared Absorption Features Relevant to Interstellar and Planetary Ices

摘要： 行星环境中冰的丰度历史以来是通过近红外吸收特征（波长 = 1.0-2.5微米）的测量以及星际介质中物质的近红外透射测量获得的，后者的应用正变得越来越普遍。对于透射测量，必须知道吸收特征的带强度（或吸收强度），以便确定冰组分的柱密度。在本文介绍的实验中，我们测量了几种与研究星际冰质尘粒包覆层和冰质行星体相关的分子的近红外吸收特征的带强度：CO（一氧化碳）、CO2（二氧化碳）、C3O2（亚碳酰基氧化物）、CH4（甲烷）、H2O（水）、CH3OH（甲醇）和NH3（氨）。在真空沉积过程中，近红外特征的大小与一个中红外特征的大小相关联，后者由于先前的冰研究而具有已知的强度。这些数据可用于从星际和行星材料的观测近红外光谱中确定冰的丰度，或者用于预测这些分子在天体物理环境中光谱搜索中的近红外特征大小。 显示英文摘要

摘要： The abundances of ices in planetary environments have historically been obtained through measurements of near-infrared absorption features (lambda = 1.0-2.5 microns), and near-IR transmission measurements of materials present in the interstellar medium are becoming more common. For transmission measurements, the band strength (or absorption intensity) of an absorption feature must be known in order to determine the column density of an ice component. In the experiments presented here, we have measured the band strengths of the near-IR absorption features for several molecules relevant to the study of interstellar icy grain mantles and icy planetary bodies: CO (carbon monoxide), CO2 (carbon dioxide), C3O2 (carbon suboxide), CH4 (methane), H2O (water), CH3OH (methanol), and NH3 (ammonia). During a vacuum deposition, the sizes of the near-IR features were correlated with that of a studied mid-IR feature whose strength is well known from previous ice studies. These data may be used to determine ice abundances from observed near-IR spectra of interstellar and planetary materials or to predict the sizes of near-IR features in spectral searches for these molecules in astrophysical environments.