کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1780255 | 1523802 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure and kinematics of large spiral galaxies
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structure and kinematics of large spiral galaxies Structure and kinematics of large spiral galaxies](/preview/png/1780255.png)
چکیده انگلیسی
We parametrise the structure and kinematics of four large and massive spiral galaxies in terms of a tilted-ring model of the Hi disk. Only one of the examined galaxies shows a typical warp structure, suggesting that warps are rarer towards larger masses of spiral galaxies. The galaxies show a sharp drop in the Hi surface density profile at a large radius, which determines the edge of the Hi disk. Beyond this edge we do not detect any neutral gas. Including the results of earlier, similar studies, we find a possible anti-correlation of the size of Hi disks of spiral galaxies (in terms of optical radii) with the optical radius of a galaxy. An extremely massive Hi cloud without any stellar counterpart in the DSS2 is found to interact with UGC 2153.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy Reviews - Volume 51, Issues 1â2, February 2007, Pages 120-124
Journal: New Astronomy Reviews - Volume 51, Issues 1â2, February 2007, Pages 120-124
نویسندگان
Christian Struve, Gyula Józsa, Franz Kenn, Uli Klein, Alessandro Pizzella, Paolo Salcuci,