Please use this identifier to cite or link to this item: http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1382
The circumnuclear environment of the peculiar galaxy NGC3310
ELENA KIRILOVSKY TERLEVICH
ROBERTO GIOVANNI TERLEVICH AFONSO
Acceso Abierto
Atribución-NoComercial-SinDerivadas
H 🇮🇮 regions
Galaxies: individual: NGC3310
Galaxies: kinematics and dynamics
Galaxies: starburst
Galaxies: star clusters
Gas and star velocity dispersions have been derived for eight circumnuclear star-forming regions (CNSFRs) and the nucleus of the spiral galaxy NGC3310 using high-resolution spectroscopy in the blue and far red. Stellar velocity dispersions have been obtained from the Ca 🇮🇮 triplet in the near-IR, using cross-correlation techniques, while gas velocity dispersions have been measured by Gaussian fits to the Hβ λ4861Å and [O 🇮🇮🇮] λ5007Å 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 × 10⁶M⊙, for the whole CNSFR between 2 × 10⁷ and 1.4 × 10⁸M⊙, and 5.3 × 10⁷M⊙, for the nucleus inside the inner 14.2 pc. The masses of the ionizing stellar population responsible for the H 🇮🇮 región gaseous emission have been derived from their published Hα luminosities and are found to be between 8.7 × 10⁵ and 2.1 × 10⁶M⊙ for the star-forming regions and 2.1 × 10⁵M⊙ 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.
Monthly Notices of the Royal Astronomical Society
2010-02
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Hagele, Guillermo F., et al., (2010). The circumnuclear environment of the peculiar galaxy NGC3310, Monthly Notices of the Royal Astronomical Society. Vol. 402(2): 1005–1026
ASTRONOMÍA Y ASTROFÍSICA
Versión aceptada
acceptedVersion - Versión aceptada
Appears in Collections:Artículos de Astrofísica

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