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Metadados

1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m16d.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP7W/38TMCQ5
Repositóriosid.inpe.br/mtc-m19/2011/01.07.16.17   (acesso restrito)
Última Atualização2011:01.07.16.27.46 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m19/2011/01.07.16.17.18
Última Atualização dos Metadados2022:03.08.17.45.23 (UTC) administrator
Chave SecundáriaINPE--PRE/
DOI10.1088/0004-6256/140/5/1528
ISSN0004-6256
Chave de CitaçãoLaBarberaCaRoGaSwLo:2010:NeInCo
TítuloSPIDER - IV. Optical and NIR color gradients in Early-type galaxies: New Insights into Correlations with Galaxy Properties
Ano2010
MêsNov.
Data de Acesso03 maio 2024
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho6418 KiB
2. Contextualização
Autor1 La Barbera, F.
2 Carvalho, R. R. de
3 Rosa, I. G. de la
4 Gal, R. R.
5 Swindle, R.
6 Lopes, P. A. A.
Grupo1
2 DAS-CEA-INPE-MCT-BR
Afiliação1 INAF – Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto de Astrofísica de Canarias (IAC), E-38200 La Laguna, Tenerife, Spain
4 University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
5
6 Observat´orio do Valongo/UFRJ, Rio de Janeiro, Brazil
RevistaAstronomical Journal
Volume140
Páginas1528-1556
Nota SecundáriaA2_ASTRONOMIA_/_FÍSICA A1_ENGENHARIAS_III C_ENSINO_DE_CIÊNCIAS_E_MATEMATICA A1_INTERDISCIPLINAR A2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA A1_QUÍMICA
Histórico (UTC)2011-01-07 16:27:46 :: marciana -> administrator :: 2010
2022-03-08 17:45:23 :: administrator -> marciana :: 2010
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
ResumoWe present an analysis of stellar population gradients in 4,546 Early-Type Galaxies with photometry in $grizYHJK$ along with optical spectroscopy. A new approach is described which utilizes color information to constrain age and metallicity gradients. Defining an effective color gradient, $\nabla_{\star}$, which incorporates all of the available color indices, we investigate how $\nabla_{\star}$ varies with galaxy mass proxies, i.e. velocity dispersion, stellar (M_star) and dynamical (M_dyn) masses, as well as age, metallicity, and alpha/Fe. ETGs with M_dyn larger than 8.5 x 10^10, M_odot have increasing age gradients and decreasing metallicity gradients wrt mass, metallicity, and enhancement. We find that velocity dispersion and alpha/Fe are the main drivers of these correlations. ETGs with 2.5 x 10^10 M_odot =< M_dyn =< 8.5 x 10^10 M_odot, show no correlation of age, metallicity, and color gradients wrt mass, although color gradients still correlate with stellar population parameters, and these correlations are independent of each other. In both mass regimes, the striking anti-correlation between color gradient and alpha-enhancement is significant at \sim 4sigma, and results from the fact that metallicity gradient decreases with alpha/Fe. This anti-correlation may reflect the fact that star formation and metallicity enrichment are regulated by the interplay between the energy input from supernovae, and the temperature and pressure of the hot X-ray gas in ETGs. For all mass ranges, positive age gradients are associated with old galaxies (>5-7 Gyr). For galaxies younger than \sim 5 Gyr, mostly at low-mass, the age gradient tends to be anti-correlated with the Age parameter, with more positive gradients at younger ages.
ÁreaCEA
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Conteúdo da Pasta docacessar
Conteúdo da Pasta sourcenão têm arquivos
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4. Condições de acesso e uso
Idiomaen
Arquivo Alvo1538-3881_140_5_1528.pdf
Grupo de Usuáriosadministrator
marciana
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft
Permissão de Leituradeny from all and allow from 150.163
5. Fontes relacionadas
Repositório Espelhosid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
Unidades Imediatamente Superiores8JMKD3MGPCW/3ETR8EH
DivulgaçãoWEBSCI; PORTALCAPES.
Acervo Hospedeirosid.inpe.br/mtc-m19@80/2009/08.21.17.02
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage e-mailaddress electronicmailaddress format isbn keywords label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype
7. Controle da descrição
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