A new method to detect globular clusters with the S-PLUS survey

Author(s):Show less -

Buzzo, Maria Luisa ^{[1, 2]} ; Cortesi, Arianna ^{[3, 4]} ; Forbes, Duncan A. ^[2] ; Brodie, Jean P. ^{[2, 5]} ; Couch, Warrick J. ^[2] ; Barbosa, Carlos Eduardo ^[1] ; Silva, Danielle de Brito ^[6] ; Coelho, Paula ^[1] ; Chies-Santos, Ana L. ^{[7, 8]} ; Escudero, Carlos ^{[9, 10]} ; Sesto, Leandro ^{[9, 10]} ; Menendez-Delmestre, Karin ^[3] ; Goncalves, Thiago S. ^[3] ; Bom, Clecio R. ^{[4, 11]} ; Alvarez-Candal, Alvaro ^{[12, 13, 14]} ; Castelli, Analia V. Smith ^{[8, 10]} ; Schoenell, William ^[15] ; Kanaan, Antonio ^[16] ; Ribeiro, Tiago ^[17] ; de Oliveira, Claudia Mendes ^[1]

Affiliation:Show less -

^[1] Univ Sao Paulo, IAG, Rua Matao 1226, Cidade Univ, BR-05508900 Sao Paulo - Brazil

^[2] Swinburne Univ, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122 - Australia

^[3] Observ Valongo, Ladeira Pedro Antonio 43, BR-20080090 Rio De Janeiro, RJ - Brazil

^[4] Univ Calif Observ, Santa Cruz, CA 95064 - USA

^[5] Univ Diego Portales, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Region Metropol - Chile

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

^[7] Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030 - Peoples R China

^[8] Univ Nacl La Plata, Fac Ciencias Astronom & Geofis, Paseo Bosque S-N, B1900FWA, La Plata - Argentina

^[9] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro - Brazil

^[10] CCT La Plata CONICET UNLP, Inst Astrofis La Plata, B1900FWA, La Plata - Argentina

^[11] Ctr Fed Educ Tecnol Celso Suckow da Fonseca, Rodovia Mario Covas, Quadra J, BR-23810000 Itaguai - Brazil

^[12] Observ Nacl MCTIC, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ - Brazil

^[13] CSIC, Inst Astrofis Andalucia, Apt 3004, E-18080 Granada - Spain

^[14] Univ Alicante, IUFACyT, E-03080 Alicante - Spain

^[15] GMTO Corp, 465 N Halstead St, Suite 250, Pasadena, CA 91107 - USA

^[16] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC - Brazil

^[17] Natl Opt Astron Observ, POB 26732, Tucson, AZ 85726 - USA

• Document type: Journal article
• Source: Monthly Notices of the Royal Astronomical Society; v. 510, n. 1, p. 1383-1392, FEB 2022.
• Web of Science Citations: 0

Abstract

In this paper, we describe a new method to select globular cluster (GC) candidates, including galaxy subtraction with unsharp masking, template fitting techniques, and the inclusion of Gaia's proper motions. We report the use of the 12-band photometric system used by S-PLUS to determine radial velocities and stellar populations of GCs around nearby galaxies. Specifically, we assess the effectiveness of identifying GCs around nearby and massive galaxies (D < 20 Mpc and sigma > 200 km s(-1)) in a multiband survey such as S-PLUS by using spectroscopically confirmed GCs and literature GC candidate lists around the bright central galaxy in the Fornax cluster, NGC 1399 (D = 19 Mpc), and the isolated lenticular galaxy NGC 3115 (D = 9.4 Mpc). Despite the shallow survey depth, which limits this work to r < 21.3 mag, we measure reliable photometry and perform robust SED fitting for a sample of 115 GCs around NGC 1399 and 42 GCs around NGC 3115, recovering radial velocities, ages, and metallicities for the GC populations. (AU)

• FAPESP's process: 19/23388-0 - The formation history of ultra diffuse galaxies
• Grantee: Maria Luísa Gomes Buzzo
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 16/12331-0 - Galaxy evolution in different environments using spatially resolved kinematics and stellar populations
• Grantee: Carlos Eduardo Barbosa
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/00204-6 - A pipeline to detect extragalactic globular clusters in J-PLUS and S-PLUS images
• Grantee: Danielle de Brito Silva
• Support Opportunities: Scholarships in Brazil - Scientific Initiation