Non-gaussian statistics and stellar rotational velocities of main-sequence field stars
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/29028 http://dx.doi.org/10.1088/0004-637X/696/1/L48 |
Resumo: | In this Letter, we study the observed distributions of rotational velocity in a sample of more than 16,000 nearby F and G dwarf stars, magnitude complete, and presenting high-precision V sin i measurements. We show that the velocity distributions cannot be fitted by a Maxwellian. In addition, an analysis based on both Tsallis and Kaniadakis power-law statistics is by far the most appropriate statistics and gives a very good fit. It is also shown that single and binary stars have similar rotational distributions. This is the first time, to our knowledge, that these two new statistics have been tested for the rotation of such a large sample of stars, pointing solidly to a solution of the puzzling problem of the function governing the distribution of stellar rotational velocity. |
id |
UFRN_34121f798e6cff30c61cc3c1c901c9e3 |
---|---|
oai_identifier_str |
oai:https://repositorio.ufrn.br:123456789/29028 |
network_acronym_str |
UFRN |
network_name_str |
Repositório Institucional da UFRN |
repository_id_str |
|
spelling |
Carvalho, J. C.Nascimento Jr., J. D. doSilva, R.Medeiros, José Renan de2020-05-19T23:04:39Z2020-05-19T23:04:39Z2009MEDEIROS, José Renan de. Non-Gaussian Statistics and Stellar Rotational Velocities of Main-Sequence Field Stars. The Astrophysical Journal, [s. l.], v. 696, p. L48-L51, 2009. ISSN 1538-4357 versão online. DOI https://doi.org/10.1088/0004-637X/696/1/L48. Disponível em: http://iopscience.iop.org/article/10.1088/0004-637X/696/1/L48/meta. Acesso em: 19 maio 2020.0004-637X (print), 1538-4357 (online)https://repositorio.ufrn.br/jspui/handle/123456789/29028http://dx.doi.org/10.1088/0004-637X/696/1/L48American Astronomical SocietyStars: evolutionStars: fundamental parametersStars: rotationStars: statisticsNon-gaussian statistics and stellar rotational velocities of main-sequence field starsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleIn this Letter, we study the observed distributions of rotational velocity in a sample of more than 16,000 nearby F and G dwarf stars, magnitude complete, and presenting high-precision V sin i measurements. We show that the velocity distributions cannot be fitted by a Maxwellian. In addition, an analysis based on both Tsallis and Kaniadakis power-law statistics is by far the most appropriate statistics and gives a very good fit. It is also shown that single and binary stars have similar rotational distributions. This is the first time, to our knowledge, that these two new statistics have been tested for the rotation of such a large sample of stars, pointing solidly to a solution of the puzzling problem of the function governing the distribution of stellar rotational velocity.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/29028/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTNon-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.txtNon-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.txtExtracted texttext/plain17520https://repositorio.ufrn.br/bitstream/123456789/29028/3/Non-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.txt2d79379651ff6d44b8f50b658c4f79a9MD53THUMBNAILNon-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.jpgNon-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.jpgGenerated Thumbnailimage/jpeg1803https://repositorio.ufrn.br/bitstream/123456789/29028/4/Non-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.jpg8369edb61562680f6595e68200b47894MD54123456789/290282022-10-20 17:07:26.303oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2022-10-20T20:07:26Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
title |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
spellingShingle |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars Carvalho, J. C. Stars: evolution Stars: fundamental parameters Stars: rotation Stars: statistics |
title_short |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
title_full |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
title_fullStr |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
title_full_unstemmed |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
title_sort |
Non-gaussian statistics and stellar rotational velocities of main-sequence field stars |
author |
Carvalho, J. C. |
author_facet |
Carvalho, J. C. Nascimento Jr., J. D. do Silva, R. Medeiros, José Renan de |
author_role |
author |
author2 |
Nascimento Jr., J. D. do Silva, R. Medeiros, José Renan de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Carvalho, J. C. Nascimento Jr., J. D. do Silva, R. Medeiros, José Renan de |
dc.subject.por.fl_str_mv |
Stars: evolution Stars: fundamental parameters Stars: rotation Stars: statistics |
topic |
Stars: evolution Stars: fundamental parameters Stars: rotation Stars: statistics |
description |
In this Letter, we study the observed distributions of rotational velocity in a sample of more than 16,000 nearby F and G dwarf stars, magnitude complete, and presenting high-precision V sin i measurements. We show that the velocity distributions cannot be fitted by a Maxwellian. In addition, an analysis based on both Tsallis and Kaniadakis power-law statistics is by far the most appropriate statistics and gives a very good fit. It is also shown that single and binary stars have similar rotational distributions. This is the first time, to our knowledge, that these two new statistics have been tested for the rotation of such a large sample of stars, pointing solidly to a solution of the puzzling problem of the function governing the distribution of stellar rotational velocity. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009 |
dc.date.accessioned.fl_str_mv |
2020-05-19T23:04:39Z |
dc.date.available.fl_str_mv |
2020-05-19T23:04:39Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MEDEIROS, José Renan de. Non-Gaussian Statistics and Stellar Rotational Velocities of Main-Sequence Field Stars. The Astrophysical Journal, [s. l.], v. 696, p. L48-L51, 2009. ISSN 1538-4357 versão online. DOI https://doi.org/10.1088/0004-637X/696/1/L48. Disponível em: http://iopscience.iop.org/article/10.1088/0004-637X/696/1/L48/meta. Acesso em: 19 maio 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/29028 |
dc.identifier.issn.none.fl_str_mv |
0004-637X (print), 1538-4357 (online) |
dc.identifier.doi.none.fl_str_mv |
http://dx.doi.org/10.1088/0004-637X/696/1/L48 |
identifier_str_mv |
MEDEIROS, José Renan de. Non-Gaussian Statistics and Stellar Rotational Velocities of Main-Sequence Field Stars. The Astrophysical Journal, [s. l.], v. 696, p. L48-L51, 2009. ISSN 1538-4357 versão online. DOI https://doi.org/10.1088/0004-637X/696/1/L48. Disponível em: http://iopscience.iop.org/article/10.1088/0004-637X/696/1/L48/meta. Acesso em: 19 maio 2020. 0004-637X (print), 1538-4357 (online) |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/29028 http://dx.doi.org/10.1088/0004-637X/696/1/L48 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Astronomical Society |
publisher.none.fl_str_mv |
American Astronomical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
instname_str |
Universidade Federal do Rio Grande do Norte (UFRN) |
instacron_str |
UFRN |
institution |
UFRN |
reponame_str |
Repositório Institucional da UFRN |
collection |
Repositório Institucional da UFRN |
bitstream.url.fl_str_mv |
https://repositorio.ufrn.br/bitstream/123456789/29028/2/license.txt https://repositorio.ufrn.br/bitstream/123456789/29028/3/Non-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.txt https://repositorio.ufrn.br/bitstream/123456789/29028/4/Non-GaussianStatisticsAndStellarRotational_Medeiros_2009.pdf.jpg |
bitstream.checksum.fl_str_mv |
e9597aa2854d128fd968be5edc8a28d9 2d79379651ff6d44b8f50b658c4f79a9 8369edb61562680f6595e68200b47894 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN) |
repository.mail.fl_str_mv |
|
_version_ |
1797777315406544896 |