منابع مشابه
Infrared spectroscopy of interstellar apolar ice analogs
Apolar ices have been observed in several regions in dense clouds and are likely dominated by molecules such as CO, CO2 and the infrared inactive molecules O2 and N2. Interstellar solid CO has been well characterized by ground-based high resolution measurements. Recent ISO results showed the ubiquitous presence of abundant CO2 ice and the presence of CO2-rich ice mantles towards several molecul...
متن کاملReal-time Optical Spectroscopy of Vuv Irradiated Pyrene:h2o Interstellar Ice
This paper describes a near-UV/VIS study of a pyrene:H2O interstellar ice analogue at 10 K using optical absorption spectroscopy. A new experimental approach makes it possible to irradiate the sample with vacuum ultraviolet (VUV) light (7-10.5 eV) while simultaneously recording spectra in the 240-1000 nm range with subsecond time resolution. Both spectroscopic and dynamic information on VUV pro...
متن کاملThe Diffuse Interstellar Bands: A Major Problem in Astronomical Spectroscopy
A critical review of the very long-standing problem of the diffuse interstellar bands is presented with emphasis on spectroscopic aspects of observational, modelling and laboratory-based research. Some research themes and ideas that could be explored theoretically and experimentally are discussed. The article is based on the Journal of Molecular Spectroscopy Review Lecture presented at the 60th...
متن کاملBidimensional spectroscopy of NGC 4214 : evolutionary state and interstellar extinction
We have mapped spectrophotometrically the star– forming regions in the center of the nearby SBm galaxy NGC 4214 with the aim of analyzing the spatial distribution of some of its physical properties (density, excitation, emission line intensity, extinction) and their relationshipwith the distribution and evolutionary state of the stellar population. Star formation takes place mainly in two big c...
متن کاملInfrared spectroscopy of HCOOH in interstellar ice analogues
Context. HCOOH is one of the more common species in interstellar ices with abundances of 1–5% with respect to solid H2O. With the launch of the Spitzer Space Telescope new infrared spectra have become available of interstellar ices in different environments. So far systematic laboratory studies on HCOOH-containing interstellar ice analogues are lacking. Aims. This study aims at characterizing t...
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ژورنال
عنوان ژورنال: Nature
سال: 1980
ISSN: 0028-0836,1476-4687
DOI: 10.1038/284595a0