appear in AJ Deep H I Survey of the Spiral Galaxy NGC 2403 Filippo Fraternali
نویسنده
چکیده
High sensitivity H I observations of the nearby spiral galaxy NGC 2403 obtained with the VLA are presented and discussed. The properties of the extended, differentially rotating H I layer with its H I holes, spiral structure and outer warp are described. In addition, these new data reveal the presence of a faint, extended and kinematically anomalous component. This shows up in the H I line profiles as extended wings of emission towards the systemic velocity. In the central regions these wings are very broad (up to 150 km s) and indicate large deviations from circular motion. We have separated the anomalous gas component from the cold
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