An Updated Small Magellanic Cloud and Magellanic Bridge Catalog of Star Clusters, Associations, and Related Objects

Autor(es)

Bica, Eduardo ^[1] ; Westera, Pieter ^[2] ; Kerber, Leandro de O. ^[3] ; Dias, Bruno ^{[4, 5]} ; Maia, Francisco ^{[6, 7]} ; Santos, Jr., Joao F. C. ^[8] ; Barbuy, Beatriz ^[6] ; Oliveira, Raphael A. P. ^[6]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Sul, Inst Fis, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS - Brazil

^[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[3] Univ Estadual Santa Cruz, Dept Ciencias Exatas & Tecnol, Rodovia Jorge Amado Km 16, BR-45662900 Ilheus, BA - Brazil

^[4] Univ Andres Bello, Fac Ciencias Exactas, Dept Fis, Av Fernandez Concha 700, Santiago - Chile

^[5] Inst Milenio Astrofis, Av Vicuna Makenna 4860, Santiago 7820436 - Chile

^[6] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508090 Sao Paulo - Brazil

^[7] Univ Fed Rio De Janeiro, Inst Fis, Av Athos Silveira Ramos 149, BR-21941972 Rio De Janeiro - Brazil

^[8] Univ Fed Minas Gerais, Dept Fis, ICEx, Av Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ASTRONOMICAL JOURNAL; v. 159, n. 3 MAR 2020.
• Citações Web of Science: 0

Resumo

We present a catalog of star clusters, associations, and related extended objects in the Small Magellanic Cloud (SMC) and the Magellanic Bridge with 2741 entries, a factor 2 more than a previous version from a decade ago. Literature data up until 2018 December are included. The identification of star clusters was carried out with digital atlases in various bands currently available in the Digitized Sky Survey and the Machine Automatique a Mesurer pour l'Astronomie. imaging surveys. In particular, we cross-identified recent cluster samples from the Visible and Infrared Survey Telescope for Astronomy near-infrared YJKs survey of the Magellanic System, Optical Gravitational Lensing Experiment IV, and Survey of the MAgellanic Stellar History surveys, confirming new clusters and pointing out equivalencies. A major contribution of the present catalog consists of the accurate central positions for clusters and small associations, including a new sample of 45 clusters or candidates in the SMC and 19 in the Magellanic Bridge, as well as a compilation of the most reliable age and metallicity values from the literature. A general catalog must also deal with the recent discoveries of 27 faint and ultra-faint star clusters and galaxies projected on the far surroundings of the Clouds, most of them from the Dark Energy Survey. The information on these objects has been complemented with photometric, spectroscopic, and kinematical follow-up data from the literature. The underluminous galaxies around the Magellanic System, still very few as compared to the predictions from. Cold Dark Matter simulations, can bring constraints to galaxy formation and hierarchical evolution. Furthermore, we provide diagnostics, when possible, of the nature of the ultra-faint clusters, searching for borders of the Magellanic System extensions into the Milky Way gravitational potential. (AU)

• Processo FAPESP: 18/05535-3 - O estudo das Nuvens de Magalhães e sua estreita ligação com a Via Láctea é o objetivo deste projeto, incluindo em particular a formação e dissolução de aglomerados globulares.
• Beneficiário: Francisco Ferreira de Souza Maia
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/22181-0 - Gradientes de idade e metalicidade dos aglomerados estelares da Ponte de Magalhães
• Beneficiário: Raphael Augusto Pereira de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado