Integrated spectral properties of star clusters in the near-ultraviolet
dc.contributor.author | Bica, Eduardo Luiz Damiani | pt_BR |
dc.contributor.author | Alloin, Danielle Marie | pt_BR |
dc.contributor.author | Schmitt, Henrique Roberto | pt_BR |
dc.date.accessioned | 2014-07-11T02:05:16Z | pt_BR |
dc.date.issued | 1994 | pt_BR |
dc.identifier.issn | 0004-6361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/97462 | pt_BR |
dc.description.abstract | We study integrated spectra of 37 star clusters in the range 3100-4200 Å. The sample includes Galactic globular and open clusters, as well as Magellanic Cloud clusters. Feature equivalent widths (W) and continuum distribution are analyzed as a function of age and metallicity. In particular we discuss the behaviour of the Balmer Jump and of the 4000 Å Break, which are measured by the same continuum ratio C3660 Å / C4020 Å. For ages t < 500 Myr the Balmer Jump is dominant over the 4000 Å Break and for t < 50 Myr it is an excellent age discriminator. The effects of blue Horizontal Branch morphology on globular cluster spectra are also discussed: they increase the Balmer line W, but do not dilute substantially the Near UV metallic features. The present data will provide a means to connect optical to UV integrated star cluster spectra, with im portant applications in stellar population analyses, in particular for distant galaxies at redshift up to 1. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Astronomy and astrophysics. Vol. 283, no. 3 (Mar. 1994), p. 805-812 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Astrofisica extragalatica | pt_BR |
dc.subject | Globular clusters - open clusters | en |
dc.subject | Galaxies: star clusters | en |
dc.subject | Astronomia | pt_BR |
dc.subject | Astrofísica | pt_BR |
dc.subject | Magellanic clouds-ultraviolet: stars | en |
dc.subject | Galaxies: evolution | en |
dc.subject | Aglomerados estelares e associacoes | pt_BR |
dc.title | Integrated spectral properties of star clusters in the near-ultraviolet | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000220136 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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