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dc.contributor.authorBonatto, Charles Josept_BR
dc.contributor.authorBica, Eduardo Luiz Damianipt_BR
dc.date.accessioned2014-04-13T01:49:50Zpt_BR
dc.date.issued2011pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/93354pt_BR
dc.description.abstractThis paper investigates the star formation rate (SFR) in the solar neighbourhood. First, we build the local age distribution function (ADF) with an updated sample of 442 star clusters located at less than 1 kpc from the Sun. Next, we define the SFR, compute the individual mass evolution of a population of artificial clusters covering the broad range of parameters observed in actual clusters, and assume 100M as the low-mass limit for effective cluster observation. This leads to a simulated ADF, which is compared to the low-noise solar neighbourhood ADF. The best match corresponds to a non-constant SFR presenting two conspicuous excesses for ages ≤9Myr and between 220–600 Myr (the local starburst). The average SFR is SFR ≈ (2500 ± 500)M Myr−1, corresponding to the average surface SFR SFR ≈ (790 ± 160)M Myr−1 kpc−2. These values are consistent with the SFR inferred from embedded clusters (ECs), but much lower ( 16 per cent) than that implied by field stars. Both the local starburst and the recent star formation period require SFR ∼ 2 × SFR to be described. The simulations show that 91.2 ± 2.7 per cent of the clusters created in the solar neighbourhood do not survive the first 10 Myr, which is consistent with the rate of EC dissolution.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the royal astronomical society. Oxford. Vol. 415, no. 3 (Aug 2011), p. 2827–2831pt_BR
dc.rightsOpen Accessen
dc.subjectAglomerados abertos e associaçõespt_BR
dc.subjectOpen clusters and associations: generalen
dc.subjectAglomerados estelarespt_BR
dc.subjectFormacao de estrelaspt_BR
dc.titleConstraining the star formation rate in the solar neighbourhood with star clusterspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000816128pt_BR
dc.type.originEstrangeiropt_BR


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