تقرير
Disk heating agents across the Hubble sequence
| العنوان: | Disk heating agents across the Hubble sequence |
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| المؤلفون: | Gerssen, J., Griffin, K. Shapiro |
| سنة النشر: | 2012 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | We measure the shape of the velocity ellipsoid in two late-type spiral galaxies (Hubble types Sc and Scd) and combine these results with our previous analyses of six early-type spirals (Sa to Sbc) to probe the relation between galaxy morphology and the ratio of the vertical and radial dispersions. We confirm at much higher significance (99.9 percent) our prior detection of a tight correlation between these quantities. We explore the trends of the magnitude and shape of the velocity ellipsoid axes with galaxy properties (colour, gas surface mass density, and spiral arm structure). The observed relationships allow for an observational identification of the radial and vertical disk heating agents in external disk galaxies. Comment: 11 pages, 8 figures, 4 tables. Accepted for publication in MNRAS |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1111/j.1365-2966.2012.21078.x |
| URL الوصول: | http://arxiv.org/abs/1204.3430 |
| رقم الأكسشن: | edsarx.1204.3430 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1111/j.1365-2966.2012.21078.x |
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