Studying the kinematics of the giant star-forming region 30 Doradus : I. The data

We present high-quality VLT-FLAMES optical spectroscopy of the nebular gas in the giant star-forming region 30 Doradus. In this paper, the first of a series, we introduce our observations and discuss the main kinematic features of 30 Dor, as revealed by the spectroscopy of the ionized gas in the reg...

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Detalles Bibliográficos
Autores principales: Torres Flores, S., Barbá, Rodolfo Héctor, Maíz Apellániz, J., Rubio, M., Bosch, Guillermo Luis, Hénault-Brunet, V., Evans, C. J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Bubbles-ISM
ISM
kinematics and dynamics-HII regions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84990
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84990
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Bubbles-ISM
ISM
kinematics and dynamics-HII regions
spellingShingle Ciencias Astronómicas
Bubbles-ISM
ISM
kinematics and dynamics-HII regions
Torres Flores, S.
Barbá, Rodolfo Héctor
Maíz Apellániz, J.
Rubio, M.
Bosch, Guillermo Luis
Hénault-Brunet, V.
Evans, C. J.
Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
topic_facet Ciencias Astronómicas
Bubbles-ISM
ISM
kinematics and dynamics-HII regions
description We present high-quality VLT-FLAMES optical spectroscopy of the nebular gas in the giant star-forming region 30 Doradus. In this paper, the first of a series, we introduce our observations and discuss the main kinematic features of 30 Dor, as revealed by the spectroscopy of the ionized gas in the region. The primary data set consists of regular grid of nebular observations, which we used to produce a spectroscopic datacube of 30 Dor, centered on the massive star cluster R136 and covering a field-of-view of 10′ × 10′. The main emission lines present in the datacube are from Hα and [Nii] λλ6548, 6584. The Hα emission-line profile varies across the region from simple single-peaked emission to complex, multiple-component profiles, suggesting that different physical mechanisms are acting on the excited gas. To analyse the gas kinematics we fit Gaussian profiles to the observed Hα features. Unexpectedly, the narrowest Hα profile in our sample lies close to the supernova remnant 30 Dor B. We present maps of the velocity field and velocity dispersion across 30 Dor, finding five previously unclassified expanding structures. These maps highlight the kinematic richness of 30 Dor (e.g. supersonic motions), which will be analysed in future papers.
format Articulo
Articulo
author Torres Flores, S.
Barbá, Rodolfo Héctor
Maíz Apellániz, J.
Rubio, M.
Bosch, Guillermo Luis
Hénault-Brunet, V.
Evans, C. J.
author_facet Torres Flores, S.
Barbá, Rodolfo Héctor
Maíz Apellániz, J.
Rubio, M.
Bosch, Guillermo Luis
Hénault-Brunet, V.
Evans, C. J.
author_sort Torres Flores, S.
title Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
title_short Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
title_full Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
title_fullStr Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
title_full_unstemmed Studying the kinematics of the giant star-forming region 30 Doradus : I. The data
title_sort studying the kinematics of the giant star-forming region 30 doradus : i. the data
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/84990
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bdutipo_str Repositorios
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