|
Título:
|
Integral field spectroscopy of a sample of nearby galaxies II. Properties of the H parallel to regions
|
|
Autores:
|
Sánchez, S. F ;
Rosales Ortega, F. F. ;
Marino, Raffaella Anna ;
Iglesias Páramo, J. ;
Vílchez, J. M. ;
Kennicutt, R. C. ;
Díaz, A. I. ;
Mast, D. ;
Monreal Ibero, A. ;
García Benito, R. ;
Bland Hawthorn, J. ;
Pérez, E. ;
González Delgado, R. ;
Husemann, B. ;
López Sánchez, A. R. ;
Cid Fernandes, R. ;
Kehrig, C. ;
Walcher, C. J. ;
Gil de Paz, Armando ;
Ellis, S.
|
|
Tipo de documento:
|
texto impreso
|
|
Editorial:
|
EDP Sciencies, 2012-10
|
|
Dimensiones:
|
application/pdf
|
|
Nota general:
|
info:eu-repo/semantics/openAccess
|
|
Idiomas:
|
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Astrofísica
,
Materia = Ciencias: Física: Astronomía
,
Tipo = Artículo
|
|
Resumen:
|
We analyse the spectroscopic properties of thousands of H?_? regions identified in 38 face-on spiral galaxies. All galaxies were observed out to 2.4 effective radii using integral field spectroscopy (IFS) over the wavelength range ~3700 to ~6900 Å. The near uniform sample has been assembled from the PPAK IFS Nearby Galaxy (PINGS) survey and a sample described in Paper I. We develop a new automatic procedure to detect H_? regions, based on the contrast of the H_? intensity maps extracted from the datacubes. Once detected, the algorithm provides us with the integrated spectra of each individual segmented region. In total, we derive good quality spectroscopic information for ~2600 independent H_? regions/complexes. This is by far the largest H_? region survey of its kind. Our selection criteria and the use of 3D spectroscopy guarantee that we cover the regions in an unbiased way. A well-tested automatic decoupling procedure has been applied to remove the underlying stellar population, deriving the main properties (intensity, dispersion and velocity) of the strongest emission lines in the considered wavelength range (covering from [O_?] ?3727 to [S_?] ?6731). A final catalogue of the spectroscopic properties of H_? regions has been created for each galaxy, which includes information on morphology, spiral structure, gaskinematics, and surface brightness of the underlying stellar population. In the current study, we focus on the understanding of the average properties of the H_? regions and their radial distributions. We find a significant change in the ionisation characteristics of H_? regions within r
|
|
En línea:
|
https://eprints.ucm.es/35159/1/gildepaz30libre.pdf
|
