A SINFONI view of circum-nuclear star-forming rings in spiral galaxies

Jesús Falcón-Barroso*, Torsten Böker, Eva Schinnerer, Johan H. Knapen, Stuart Ryder

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

We present near-infrared (H- and K-band) SINFONI integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. We made use of the relative intensities of different emission lines (i.e. [FeII], HeI, Br) to age date the stellar clusters present along the rings. This qualitative, yet robust, method allows us to discriminate between two distinct scenarios that describe how star formation progresses along the rings. Our findings favour a model where star formation is triggered predominantly at the intersection between the bar major axis and the inner Lindblad resonance and then passively evolves as the clusters rotate around the ring (Pearls on a string scenario), although models of stochastically distributed star formation (Popcorn model) cannot be completely ruled out.

Original languageEnglish
Title of host publicationFormation and evolution of galaxy bulges
Subtitle of host publicationproceedings of the 245th symposium of the International Astronomical Union held in Oxford, United Kingdom, July 16-20, 2007
EditorsMartin Bureau, E. Athanassoula, Beatriz Barbuy
Place of PublicationCambridge
Pages177-180
Number of pages4
DOIs
Publication statusPublished - 1 Jul 2007
Externally publishedYes
Event245th symposium of the International Astronomical Union - Oxford, United Kingdom
Duration: 16 Jul 200720 Jul 2007

Publication series

NameIAU symposium proceedings series
PublisherCambridge University Press
Number245
ISSN (Print)1743-9213

Conference

Conference245th symposium of the International Astronomical Union
CountryUnited Kingdom
CityOxford
Period16/07/0720/07/07

Keywords

  • Galaxies: individual (NGC 613, NGC 1079, NGC 1300, NGC 5248, IC 1438)
  • Galaxies: nuclei
  • Galaxies: spiral
  • Galaxies: star clusters
  • Galaxies: starburst
  • Galaxies: stellar content

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