Revealing deuterium Balmer lines in H II regions with VLT - UVES ?
نویسنده
چکیده
The search for deuterium Balmer lines with VLTUVES is reported in H ii regions of the Galaxy and the Magellanic Clouds. The D i lines appear as faint, narrow emission features in the blue wings of the H i Balmer lines and can be distinguished from high-velocity H i emission. The previous identification to deuterium is re-inforced beyond doubt. The detection of Dα and Dβ in Orion (Hébrard et al. 2000) is confirmed and deuterium lines are now detected up to at least Dη. The UVES observations provide the first detection of Balmer D i lines in four new H ii regions (M 8, M 16, M 20, and DEM S 103 in SMC), demonstrating that these lines are of common occurence.
منابع مشابه
Manuscript intended for the December 1 , 2000 Special Edition ( Early Science with the VLT : The opening of Kueyen ) Revealing deuterium Balmer lines in H ii regions with VLT - UVES ⋆
The search for deuterium Balmer lines with VLT-UVES is reported in H ii regions of the Galaxy and the Magellanic Clouds. The D i lines appear as faint, narrow emission features in the blue wings of the H i Balmer lines and can be distinguished from high-velocity H i emission. The previous identification to deuterium is re-inforced beyond doubt. The detection of Dα and Dβ in Orion (Hébrard et al...
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