Academic Journal
The HI halo of NGC 2403
| العنوان: | The HI halo of NGC 2403 |
|---|---|
| المؤلفون: | J. E. Hibbard, M. P. Rupen, J. H. Van Gorkom, Tom Oosterloo, Renzo Sancisi, Gustaaf Van Moorsel |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/astro-ph/0009115v1.pdf. |
| سنة النشر: | 2000 |
| المجموعة: | CiteSeerX |
| الوصف: | Deep VLA HI observations of the nearby spiral galaxy NGC 2403 reveal the presence of an extended HI halo that shows slower rotation and a general inflow ( ∼ 15-25 km s −1) towards the center of the galaxy. 1. The HI halo The position-velocity diagram along the major axis of the Sc galaxy NGC 2403 shows the presence of gas with anomalous velocities (see Fig. 3 of the paper by Sancisi et al., this conference). This is the signature of an extended, slower rotating HI halo surrounding the thin disk (Schaap et al., 2000) We have isolated the ‘anomalous gas ’ in NGC 2403 by fitting a Gaussian line profile to the thin disk and subtracting it from the data. Figure 1. Velocity fields of the total HI (left) and of the anomalous gas (right) for NGC 2403. The thick line shows the systemic velocity 1 2 Fraternali, Oosterloo, Sancisi, van Moorsel Figure 1 shows the comparison between the velocity field of the total HI and that of the anomalous gas. It is clear that the second has a major axis at |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.315.1905; http://arxiv.org/pdf/astro-ph/0009115v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.315.1905 http://arxiv.org/pdf/astro-ph/0009115v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.1076DD67 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |