English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/20825
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 8 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

3D spectroscopy of local luminous compact blue galaxies: kinematics of NGC 7673

AutorPérez Gallego, Jorge; Guzmán, Rafael; Castillo Morales, A.; Castander, Francisco J. ; Gallego, Jesús; Garland, Catherine A.; Gruel, Nicolas; Pisano, Daniel Joseph; Sánchez, Sebastián F. ; Zamorano, Jaime
Palabras claveGalaxies: individual
NGC 7673
Galaxies: starburst
Fecha de publicación23-dic-2009
EditorWiley-Blackwell
CitaciónMonthly Notices of the Royal Astronomical Society 402(2): 1397-1406 (2009)
ResumenThe kinematic properties of the ionized gas of local Luminous Compact Blue Galaxy (LCBG) NGC 7673 are presented using three dimensional data taken with the PPAK integral field unit at the 3.5-m telescope in the Centro Astron\'omico Hispano Alem\'an. Our data reveal an asymmetric rotating velocity field with a peak to peak difference of 60 km s$^{-1}$. The kinematic centre is found to be at the position of a central velocity width maximum ($\sigma=54\pm1$ km s$^{-1}$), which is consistent with the position of the luminosity-weighted centroid of the entire galaxy. The position angle of the minor rotation axis is 168$^{\circ}$ as measured from the orientation of the velocity field contours. At least two decoupled kinematic components are found. The first one is compact and coincides with the position of the second most active star formation region (clump B). The second one is extended and does not have a clear optical counterpart. No evidence of active galactic nuclei activity or supernovae galactic winds powering any of these two components has been found. Our data, however, show evidence in support of a previously proposed minor merger scenario in which a dwarf galaxy, tentatively identified with clump B, is falling into NGC 7673. and triggers the starburst. Finally, it is shown that the dynamical mass of this galaxy may be severely underestimated when using the derived rotation curve or the integrated velocity width, under the assumption of virialization.
Descripción10 pages, 10 figures, 2 tables.-- Pre-print archive.
Versión del editorhttp://dx.doi.org/10.1111/j.1365-2966.2009.15989.x
URIhttp://hdl.handle.net/10261/20825
DOI10.1111/j.1365-2966.2009.15989.x
ISSN0035-8711
Aparece en las colecciones: (ICE) Artículos
(IAA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
0911.1069v1.pdf949,45 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.