The circumnuclear environment of the peculiar galaxy NGC 3310
Gas and star velocity dispersions have been derived for eight circumnuclear star-forming regions (CNSFRs) and the nucleus of the spiral galaxy NGC 3310 using high-resolution spectroscopy in the blue and far red. Stellar velocity dispersions have been obtained from the Ca ii triplet in the near-IR, u...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2010
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/82536 |
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I19-R120-10915-82536 |
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dspace |
| institution |
Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Galaxies: individual: NGC 3310 Galaxies: kinematics and dynamics Galaxies: star clusters Galaxies: starburst H ii regions |
| spellingShingle |
Ciencias Astronómicas Galaxies: individual: NGC 3310 Galaxies: kinematics and dynamics Galaxies: star clusters Galaxies: starburst H ii regions Hägele, Guillermo Federico Díaz Beltrán, Ángeles Isabel Cardaci, Mónica Viviana Terlevich, Elena Terlevich, Roberto The circumnuclear environment of the peculiar galaxy NGC 3310 |
| topic_facet |
Ciencias Astronómicas Galaxies: individual: NGC 3310 Galaxies: kinematics and dynamics Galaxies: star clusters Galaxies: starburst H ii regions |
| description |
Gas and star velocity dispersions have been derived for eight circumnuclear star-forming regions (CNSFRs) and the nucleus of the spiral galaxy NGC 3310 using high-resolution spectroscopy in the blue and far red. Stellar velocity dispersions have been obtained from the Ca ii triplet in the near-IR, using cross-correlation techniques, while gas velocity dispersions have been measured by Gaussian fits to the Hβ λ4861 Å and [O iii] λ5007 Å emission lines.The CNSFR stellar velocity dispersions range from 31 to 73 km s-1. These values, together with the sizes measured on archival Hubble Space Telescope images, yield upper limits to the dynamical masses for the individual star clusters between 1.8 and 7.1 × 106 M⊙, for the whole CNSFR between 2 × 107 and 1.4 × 108 M⊙, and 5.3 × 107 M⊙, for the nucleus inside the inner 14.2 pc. The masses of the ionizing stellar population responsible for the H ii region gaseous emission have been derived from their published Hα luminosities and are found to be between 8.7 × 105 and 2.1 × 106 M⊙ for the star-forming regions and 2.1 × 105 M⊙ for the galaxy nucleus; they therefore constitute between 1 and 7 per cent of the total dynamical mass.The ionized gas kinematics is complex; two different kinematical components seem to be present as evidenced by different linewidths and Doppler shifts. |
| format |
Articulo Articulo |
| author |
Hägele, Guillermo Federico Díaz Beltrán, Ángeles Isabel Cardaci, Mónica Viviana Terlevich, Elena Terlevich, Roberto |
| author_facet |
Hägele, Guillermo Federico Díaz Beltrán, Ángeles Isabel Cardaci, Mónica Viviana Terlevich, Elena Terlevich, Roberto |
| author_sort |
Hägele, Guillermo Federico |
| title |
The circumnuclear environment of the peculiar galaxy NGC 3310 |
| title_short |
The circumnuclear environment of the peculiar galaxy NGC 3310 |
| title_full |
The circumnuclear environment of the peculiar galaxy NGC 3310 |
| title_fullStr |
The circumnuclear environment of the peculiar galaxy NGC 3310 |
| title_full_unstemmed |
The circumnuclear environment of the peculiar galaxy NGC 3310 |
| title_sort |
circumnuclear environment of the peculiar galaxy ngc 3310 |
| publishDate |
2010 |
| url |
http://sedici.unlp.edu.ar/handle/10915/82536 |
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Repositorios |
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1764820488380481537 |