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Probing mass segregation in the globular cluster NGC 6397
dc.contributor.author | Martinazzi, Elizandra | pt_BR |
dc.contributor.author | Pieres, Adriano | pt_BR |
dc.contributor.author | Kepler, Souza Oliveira | pt_BR |
dc.contributor.author | Costa, Jose Eduardo da Silveira | pt_BR |
dc.contributor.author | Bonatto, Charles Jose | pt_BR |
dc.contributor.author | Bica, Eduardo Luiz Damiani | pt_BR |
dc.date.accessioned | 2014-11-15T02:15:56Z | pt_BR |
dc.date.issued | 2014 | pt_BR |
dc.identifier.issn | 0035-8711 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/106996 | pt_BR |
dc.description.abstract | In this study, we present a detailed study of mass segregation in the globular cluster NGC 6397. First, we carry out a photometric analysis of projected European SouthernObservatory (ESO)– Very Large Telescope (VLT) data (between 1 and 10 arcmin from the cluster centre), presenting the luminosity function corrected by completeness. The luminosity function shows a higher density of bright stars near the central region of the data with respect to the outer region. We calculate a deprojected model (covering the whole cluster), estimating a total number of 193 000 ± 19 000 stars. The shapes of the surface brightness and density-number profiles versus the radial coordinate r (instead of the projected coordinate R) lead to a decreasing luminosity and thus mass for an average star, up to 1 arcmin, quantifying the mass segregation. The deprojected model does not show evidence of mass segregation outside this region. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Monthly notices of the Royal Astronomical Society. Oxford. Vol. 442, no. 4 (Aug. 2014), p. 2278–2281 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aglomerados globulares | pt_BR |
dc.subject | Globular clusters: individual: NGC 6397 | en |
dc.subject | Galaxy: structure | en |
dc.title | Probing mass segregation in the globular cluster NGC 6397 | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000942417 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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