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http://hdl.handle.net/20.500.12386/25934| Title: | Redshifted diffuse interstellar bands in the Orion OB1 association | Authors: | Krełowski, J. Galazutdinov, G. A. MULAS, Giacomo Maszewska, M. CECCHI PESTELLINI, Cesare |
Issue Date: | 2015 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 451 | Issue: | 3 | First Page: | 3210 | Abstract: | The wavelength displacements of the diffuse interstellar bands (DIBs) at 4502, 5705, 5780, 6284 and 7224 Å, with respect to the well-known, narrow atomic/molecular interstellar lines (of Ca II and Na I), have been measured in the spectra of the two Orion Trapezium stars, HD 37022 and HD 37020, using the HARPS-N spectrograph, attached to the 3.5-m Telescopio Nazionale Galileo, and the Bohyunsan Optical Astronomy Observatory (BOAO) echelle spectrograph (BOES), attached to the 1.8-m Korean telescope. The redshift is ∼25 km s<SUP>-1</SUP> for all these DIBs. We discuss the various possible origins of this very peculiar wavelength shift in the light of the particular physical conditions in the Orion Trapezium. The above-mentioned shift is seemingly absent in the DIBs at 6196 and 6993 Å. | URI: | http://hdl.handle.net/20.500.12386/25934 | URL: | https://academic.oup.com/mnras/article/451/3/3210/1187785 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stv1117 | Bibcode ADS: | 2015MNRAS.451.3210K | Fulltext: | open |
| Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| stv1117.pdf | Pdf editoriale | 1.06 MB | Adobe PDF | View/Open |
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