Academic Journal
The Bluedisks project, a study of unusually HI-rich galaxies: I. HI Sizes and Morphology
| العنوان: | The Bluedisks project, a study of unusually HI-rich galaxies: I. HI Sizes and Morphology |
|---|---|
| المؤلفون: | Jing Wang, Guinevere Kauffmann, Gyula I. G. Józsa, Paolo Serra, Thijs Van Der Hulst, Frank Bigiel, Jarle Brinchmann, M. A. W. Verheijen, Tom Oosterloo, Enci Wang, Cheng Li, Milan Den Heijer, Jürgen Kerp |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://www.mpa-garching.mpg.de/mpa/publications/preprints/pp2013/MPA3347.pdf. |
| سنة النشر: | 1303 |
| المجموعة: | CiteSeerX |
| الوصف: | We introduce the “Bluedisk ” project, a large program at the Westerbork Synthesis Radio Telescope (WSRT) that has mapped the HI in a sample of 23 nearby galaxies with unusually high HI mass fractions, along with a similar-sized sample of control galaxies matched in stellar mass, size, inclination and redshift. This paper presents the sample selection, observational set-up, data reduction strategy, and a first analysis of the sizes and structural properties of the HI disks. We find that the HI-rich galaxies lie on the same HI mass versus HI size relation as normal spiral galaxies, extending it to total HI masses of 2×10 10 M ⊙ and radii R1 of ∼ 100 kpc (where R1 is defined as the radius where the HI column density reaches 1 M ⊙ pc −2). HIrich galaxies have significantly larger values of HI-to-optical size ratio at fixed stellar mass, concentration index, stellar and star formation rate surface density compared to the control sample. The disks of HI-rich galaxies are also significantly more clumpy (i.e. have higher HI |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.397.9125; http://www.mpa-garching.mpg.de/mpa/publications/preprints/pp2013/MPA3347.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.397.9125 http://www.mpa-garching.mpg.de/mpa/publications/preprints/pp2013/MPA3347.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.97C029DE |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |