Radial velocities of open stellar clusters: a new solid constraint favouring Tsallis maximum entropy theory

Carvalho, J.C.; Soares, B. B.; Martins, Bruno Leonardo Canto; Nascimento Júnior, José Dias do; Recio-Blanco, A.; Medeiros, José Renan de

Radial velocities of open stellar clusters: a new solid constraint favouring Tsallis maximum entropy theory

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dc.contributor.author	Carvalho, J.C.
dc.contributor.author	Soares, B. B.
dc.contributor.author	Martins, Bruno Leonardo Canto
dc.contributor.author	Nascimento Júnior, José Dias do
dc.contributor.author	Recio-Blanco, A.
dc.contributor.author	Medeiros, José Renan de
dc.date.accessioned	2020-05-19T18:09:52Z
dc.date.available	2020-05-19T18:09:52Z
dc.date.issued	2007-10-15
dc.description.abstract	In the present study we apply a Tsallis maximum entropy distribution law to the study of the stellar residual radial velocity in a sample of 13 stellar open clusters. From a comparison between results obtained from the analysis based on Tsallis law and on the one based on the Maxwellian law we show that the generalized Tsallis distribution fits more closely the observed distribution of the stellar residual radial velocities for these stellar clusters. We have found clear evidences that the q-parameter in the Tsallis generalized distribution depends on stellar cluster ages for clusters older than 10. There is also some indication that q increases with cluster galactocentric distance. The results obtained in this work represent an additional solid constraint in the stellar astrophysics favoring the Tsallis maximum entropy theory	pt_BR
dc.description.resumo	In the present study we apply a Tsallis maximum entropy distribution law to the study of the stellar residual radial velocity in a sample of 13 stellar open clusters. From a comparison between results obtained from the analysis based on Tsallis law and on the one based on the Maxwellian law we show that the generalized Tsallis distribution fits more closely the observed distribution of the stellar residual radial velocities for these stellar clusters. We have found clear evidences that the q-parameter in the Tsallis generalized distribution depends on stellar cluster ages for clusters older than 10. There is also some indication that q increases with cluster galactocentric distance. The results obtained in this work represent an additional solid constraint in the stellar astrophysics favoring the Tsallis maximum entropy theory	pt_BR
dc.identifier.citation	CARVALHO, J.c.; SOARES, B.B.; MARTINS, B.l. Canto; NASCIMENTO, J.d. do; RECIO-BLANCO, A.; MEDEIROS, J.r. de. Radial velocities of open stellar clusters: a new solid constraint favouring tsallis maximum entropy theory. : A new solid constraint favouring Tsallis maximum entropy theory. Physica A: Statistical Mechanics and its Applications, [s.l.], v. 384, n. 2, p. 507-515, out. 2007. Disponível em: http://dx.doi.org/10.1016/j.physa.2007.05.045. Acesso em: 12 mai. 2020.	pt_BR
dc.identifier.doi	10.1016/j.physa.2007.05.045
dc.identifier.issn	1678-765X
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29009
dc.language	en	pt_BR
dc.publisher	Elsevier Inc.	pt_BR
dc.subject	Stars: rotation	pt_BR
dc.subject	Distribution	pt_BR
dc.subject	Main sequence	pt_BR
dc.subject	Open cluster	pt_BR
dc.title	Radial velocities of open stellar clusters: a new solid constraint favouring Tsallis maximum entropy theory	pt_BR
dc.type	article	pt_BR