| Texto completo | |
| Autor(es): Mostrar menos - |
de Brito Silva, Danielle
;
Coelho, Paula
;
Cortesi, Arianna
;
Bruzual, Gustavo
;
Magris, Gladis C.
;
Chies-Santos, Ana L.
;
Hernandez-Jimenez, Jose A.
;
Ederoclite, Alessandro
;
San Roman, Izaskun
;
Varela, Jesus
;
Forbes, Duncan A.
;
Jimenez-Teja, Yolanda
;
Cenarro, Javier
;
Cristobal-Hornillos, David
;
Hernandez-Monteagudo, Carlos
;
Lopez-Sanjuan, Carlos
;
Marin-Franch, Antonio
;
Moles, Mariano
;
Ramio, Hector Vazquez
;
Dupke, Renato
;
Sodre Jr, Laerte
;
Angulo, Raul E.
Número total de Autores: 22
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Astronomy & Astrophysics; v. 664, p. 22-pg., 2022-08-18. |
| Resumo | |
Context. Extragalactic globular clusters (GCs) are key objects in studies of galactic histories. The advent of wide-field surveys, such as the Javalambre Photometric Local Universe Survey (J-PLUS), offers new possibilities for the study of these systems. Aims. We performed the first study of GCs in J-PLUS to recover information on the history of NGC 1023, taking advantage of widefield images and 12 filters. Methods. We developed the semiautomatic pipeline GCFinder for detecting GC candidates in J-PLUS images, which can also be adapted to similar surveys. We studied the stellar population properties of a sub-sample of GC candidates using spectral energy distribution (SED) fitting. Results. We found 523 GC candidates in NGC 1023, about 300 of which are new. We identified subpopulations of GC candidates, where age and metallicity distributions have multiple peaks. By comparing our results with the simulations, we report a possible broad age-metallicity relation, supporting the notion that NGC 1023 has experienced accretion events in the past. With a dominating age peak at 10(10) yr, we report a correlation between masses and ages that suggests that massive GC candidates are more likely to survive the turbulent history of the host galaxy. Modeling the light of NGC 1023, we find two spiral-like arms and detect a displacement of the galaxy's photometric center with respect to the outer isophotes and center of GC distribution (similar to 700 pc and similar to 1600 pc, respectively), which could be the result of ongoing interactions between NGC 1023 and NGC 1023A. Conclusions. By studying the GC system of NGC 1023 with J-PLUS, we showcase the power of multi-band surveys for these kinds of studies and we find evidence to support the complex accretion history of the host galaxy. (AU) | |
| Processo FAPESP: | 09/54006-4 - Um cluster de computadores para o Departamento de Astronomia do IAG-USP e para o Núcleo de Astrofísica da UNICSUL |
| Beneficiário: | Elisabete Maria de Gouveia Dal Pino |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 21/08920-8 - Galáxias em interação: novo catálogo com dados do survey S-Plus e caracterização das propriedades físicas com dados do Survey MaNGA. |
| Beneficiário: | Jose Andres Hernandez Jimenez |
| Modalidade de apoio: | Bolsas no Brasil - Programa Capacitação - Treinamento Técnico |
| Processo FAPESP: | 17/00204-6 - Uma pipeline para detectar aglomerados globulares extragalácticos em imagens do J-PLUS e S-PLUS |
| Beneficiário: | Danielle de Brito Silva |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 18/05392-8 - Uma nova biblioteca de modelos de população estelar puramente teóricos |
| Beneficiário: | Paula Rodrigues Teixeira Coelho |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |