The VISCACHA survey - I. Overview and first results

Autor(es):Mostrar menos -

Maia, Francisco F. S. ^[1] ; Dias, Bruno ^{[2, 3]} ; Santos, Jr., Joao F. C. ^[4] ; Kerber, Leandro de O. ^{[1, 5]} ; Bica, Eduardo ^[6] ; Piatti, Andres E. ^{[7, 8]} ; Barbuy, Beatriz ^[1] ; Quint, Bruno ^{[9, 10]} ; Fraga, Luciano ^[11] ; Sanmartim, David ^[9] ; Angelo, Mateus S. ^[12] ; Hernandez-Jimenez, Jose A. ^{[1, 3]} ; Katime Santrich, Orlando J. ^[5] ; Oliveira, Raphael A. P. ^[1] ; Perez-Villegas, Angeles ^[1] ; Souza, Stefano O. ^[1] ; Vieira, Rodrigo G. ^[1] ; Westera, Pieter ^[13]

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Sao Paulo, Inst Astron & Geofis, Rua Matao 1226, BR-05508090 Sao Paulo - Brazil

^[2] European Southern Observ, Alonso de Cordova 3107, Vitacura 19001 - Chile

^[3] Univ Andres Bello, Dept Ciencias Fis, Fernandez Concha 700, Santiago - Chile

^[4] Univ Fed Minas Gerais, Inst Ciencias Exatas, Av Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG - Brazil

^[5] Univ Estadual Santa Cruz, Dept Ciencias Exatas & Tecnol, Rodovia Jorge Amado Km 16, BR-45662900 Santa Cruz Do Sul - Brazil

^[6] Univ Fed Rio Grande do Sul, Ins Fis, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS - Brazil

^[7] Consejo Nacl Invest Cient & Tecn, Av Rivadavia 1917, C1033AAJ, Buenos Aires, DF - Argentina

^[8] Observ Astron, Laprida 854, RA-5000 Cordoba - Argentina

^[9] AURA, Gemini Observ, Casilla 603, La Serena - Chile

^[10] AURA, SOAR Telescope, Casilla 603, La Serena - Chile

^[11] Lab Nacl Astrofis, Rua Estados Unidos 154, BR-37504364 Itajuba - Brazil

^[12] Ctr Fed Educ Tecnol Minas Gerais, Av Monsenhor Luiz de Gonzaga 103, BR-37250000 Nepomuceno - Brazil

^[13] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Santo Andre - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Monthly Notices of the Royal Astronomical Society; v. 484, n. 4, p. 5702-5722, APR 2019.
• Citações Web of Science: 0

Resumo

The VISCACHA(VIsible Soar photometry of star Clusters in tApii and Coxi HuguA) Survey is an ongoing project based on deep photometric observations of Magellanic Cloud star clusters, collected using the SOuthern Astrophysical Research (SOAR) telescope together with the SOAR Adaptive Module Imager. Since 2015 more than 200 h of telescope time were used to observe about 130 stellar clusters, most of them with low mass (M < 10(4) M-circle dot) and/or located in the outermost regions of the Large Magellanic Cloud and the Small Magellanic Cloud. With this high-quality data set, we homogeneously determine physical properties from statistical analysis of colour-magnitude diagrams, radial density profiles, luminosity functions, and mass functions. Ages, metallicities, reddening, distances, present-day masses, mass function slopes, and structural parameters for these clusters are derived and used as a proxy to investigate the interplay between the environment in the Magellanic Clouds and the evolution of such systems. In this first paper we present the VISCACHA Survey and its initial results, concerning the SMC clusters AM3, K37, HW20, and NGC 796 and the LMC ones KMHK228, OHSC3, SL576, SL61, and SL897, chosen to compose a representative subset of our cluster sample. The project's long-term goals and legacy to the community are also addressed. (AU)

• Processo FAPESP: 17/15893-1 - Órbitas de aglomerados globulares do bojo: formação e evolução da Via Láctea
• Beneficiário: Maria de Los Angeles Perez Villegas
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• 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
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado