Поиск по:www.naic.edu/ - Поискать по всем серверам
|Найдено документов: 3403 (2 сайтов) ---- Время поиска: 0.05сек.|
Показаны документы, содержащие фрагменты текста из документа
Molecular Line Surveys with Arecibo Minchin et al. ... So far, the Arp 220 Spectral Survey has made the first detection of the pre-biotic molecule Methanamine (CH2 NH) outside of the Local Group, has seen three cm-wavelength transitions of HCN that had not previously been observed, has detected three transitions of excited OH that were not previously known in Arp 220 , has detected an absorption feature of either 18 OH or Formic Acid (HCOOH), and has seen a possible ...
[ Текст ] Ссылки http://www.naic.edu/~astro/frontiers/molsurv.pdf -- 61.6 Кб -- 24.09.2007
... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...