HALOGAS observations of NGC 4414 : fountains, interaction, and ram pressure
| العنوان: | HALOGAS observations of NGC 4414 : fountains, interaction, and ram pressure |
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| المؤلفون: | Rene A. M. Walterbos, George Heald, Paolo Serra, Gianfranco Gentile, E. Jütte, Gyula I. G. Józsa, Maria T. Patterson, W. J. G. de Blok, Peter Kamphuis, Richard J. Rand |
| المساهمون: | Department of Astronomy, Faculty of Science, Astrophysics, Astronomy and Astrophysics Research Group, Astronomy, Kapteyn Astronomical Institute |
| المصدر: | ASTRONOMY & ASTROPHYSICS Astronomy and Astrophysics A80-177 Astronomy and astrophysics, 566:A80. EDP Sciences |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Shell (structure), galaxies: halos, individual: NGC 4414 [galaxies], POTENTIALS, FOS: Physical sciences, THINGS, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, SHELL GALAXIES, MASS, Optical imaging, ISOLATED SPIRAL NGC-4414, kinematics and dynamics [galaxies], DARK-MATTER, Surface brightness, galaxies: individual: NGC 4414, galaxies: kinematics and dynamics, Astrophysics::Galaxy Astrophysics, Dwarf galaxy, Physics, Spiral galaxy, ISM [galaxies], LOPSIDEDNESS, Astronomy and Astrophysics, DISK GALAXIES, H I, Astrophysics - Astrophysics of Galaxies, Accretion (astrophysics), Galaxy, Ram pressure, halos [galaxies], Physics and Astronomy, Space and Planetary Science, GAS, Astrophysics of Galaxies (astro-ph.GA), structure [galaxies], galaxies: structure, Astrophysics::Earth and Planetary Astrophysics, galaxies: ISM |
| الوصف: | We present deep HI imaging of the nearby spiral galaxy NGC 4414, taken as part of the Westerbork HALOGAS (Hydrogen Accretion in LOcal GAlaxieS) survey. The observations show that NGC 4414 can be characterized by a regularly rotating inner HI disk, and a more disturbed outer disk. Modeling of the kinematics shows that the outer disk is best described by a U-shaped warp. Deep optical imaging also reveals the presence of a low surface brightness stellar shell, indicating a minor interaction with a dwarf galaxy at some stage in the past. Modeling of the inner disk suggests that about 4 percent of the inner HI is in the form of extra-planar gas. Because of the the disturbed nature of the outer disk, this number is difficult to constrain for the galaxy as a whole. These new, deep observations of NGC 4414 presented here show that even apparently undisturbed galaxies are interacting with their environment. Comment: Accepted for publication in Astronomy and Astrophysics |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-6361 |
| DOI: | 10.1051/0004-6361/201322517 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::481144713c0dc024d0d985d3e7b34292 https://biblio.ugent.be/publication/6846898/file/6847032 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....481144713c0dc024d0d985d3e7b34292 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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| DOI: | 10.1051/0004-6361/201322517 |