Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
HALOGAS observations of NGC 4414: Fountains, interaction, and ram pressure
Astronomy and Astrophysics, Volume 566, Article A80, Year 2014
Notification
URL copied to clipboard!
Description
We present deep H i 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 H i 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 H i is in the form of extra-planar gas. Because of 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. © ESO, 2014.
Authors & Co-Authors
de Blök, Willem J.G.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
South Africa, Cape Town
University of Cape Town
Netherlands, Groningen
Kapteyn Instituut
Józsa, Gyula I.G.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Patterson, Maria T.
United States, Las Cruces
New Mexico State University
Gentile, Gianfranco
Belgium, Ghent
Universiteit Gent
Belgium, Brussels
Vrije Universiteit Brussel
Heald, George H.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Groningen
Kapteyn Instituut
Jütte, Eva
Germany, Bochum
Ruhr-universitat Bochum
Kamphuis, Peter
Germany, Bochum
Ruhr-universitat Bochum
Australia, Sydney
Australia Telescope National Facility
Rand, Richard J.
United States, Albuquerque
The University of new Mexico
Serra, Paolo
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Australia, Sydney
Australia Telescope National Facility
Walterbos, René A.M.
United States, Las Cruces
New Mexico State University
Statistics
Citations: 21
Authors: 10
Affiliations: 9
Identifiers
Doi:
10.1051/0004-6361/201322517
ISSN:
00046361
e-ISSN:
14320746
Study Design
Cross Sectional Study
Study Approach
Quantitative