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

Authors :
Buzzo, Maria Luisa
Cortesi, Arianna
Forbes, Duncan A
Brodie, Jean P
Couch, Warrick J
Eduardo Barbosa, Carlos
de Brito Silva, Danielle
Coelho, Paula
Chies-Santos, Ana L
Escudero, Carlos
Sesto, Leandro
Menéndez-Delmestre, Karín
Gonçalves, Thiago S
Bom, Clécio R
Alvarez-Candal, Alvaro
Smith Castelli, Analía V
Schoenell, William
Kanaan, Antonio
Ribeiro, Tiago
Mendes de Oliveira, Claudia
Source :
Monthly Notices of the Royal Astronomical Society; Feb2022, Vol. 510 Issue 1, p1383-1392, 10p
Publication Year :
2022

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 σ > 200 km s<superscript>-1</superscript>) 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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00358711
Volume :
510
Issue :
1
Database :
Complementary Index
Journal :
Monthly Notices of the Royal Astronomical Society
Publication Type :
Academic Journal
Accession number :
154800770
Full Text :
https://doi.org/10.1093/mnras/stab3489