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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

One Hundred SMUDGes in S-PLUS: Ultra-diffuse Galaxies Flourish in the Field

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Author(s):
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Barbosa, C. E. [1, 2] ; Zaritsky, D. [1] ; Donnerstein, R. [1] ; Zhang, H. [1] ; Dey, A. [3] ; de Oliveira, C. Mendes [2] ; Sampedro, L. [2] ; Molino, A. [2] ; Costa-Duarte, M. V. [2] ; Coelho, P. [2] ; Cortesi, A. [2] ; Herpich, F. R. [2] ; Hernandez-Jimenez, J. A. [4, 2] ; Santos-Silva, T. [2] ; Pereira, E. [2] ; Werle, A. [5, 2] ; Overzier, R. A. [2, 6] ; Fernandes, R. [5] ; Castelli, A. V. Smith [7, 8] ; Ribeiro, T. [9, 3] ; Schoenell, W. [10, 11] ; Kanaan, A. [5]
Total Authors: 22
Affiliation:
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[1] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85719 - USA
[2] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Astron, Rua Matao 1225, BR-05508090 Sao Paulo, SP - Brazil
[3] NSF, Natl Opt Infrared Astron Res Lab, POB 26732, Tucson, AZ 85726 - USA
[4] Univ Andres Bello, Dept Ciencias Fis, Fernandez Concha 700, Santiago - Chile
[5] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC - Brazil
[6] Minist Ciencia Tecnol Inovacao & Comunicacoes, Observ Nacl, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ - Brazil
[7] UNLP, Inst Astrofis La Plata, CONICET, Paseo Bosque S-N, B1900FWA, La Plata - Argentina
[8] UNLP, Fac Ciencias Astron & Geofis, Paseo Bosque S-N, B1900FWA, La Plata - Argentina
[9] Univ Fed Sergipe, Dept Fis, Ave Marechal Rondon S-N, BR-49000000 Sao Cristovao, SE - Brazil
[10] GMTO Corp, 465 N Halstead St, Suite 250, Pasadena, CA 91107 - USA
[11] Univ Fed Rio Grande do Sul, Inst Fis, Dept Astron, Ave Bento Goncalves 9500, Porto Alegre, RS - Brazil
Total Affiliations: 11
Document type: Journal article
Source: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES; v. 247, n. 2 APR 2020.
Web of Science Citations: 0
Abstract

We present the first systematic study of the stellar populations of ultra-diffuse galaxies (UDGs) in the field, integrating the large area search and characterization of UDGs by the SMUDGes survey with the twelve-band optical photometry of the S-PLUS survey. Based on Bayesian modeling of the optical colors of UDGs, we determine the ages, metallicities, and stellar masses of 100 UDGs distributed in an area of similar to 330 deg(2) in the Stripe 82 region. We find that the stellar masses and metallicities of field UDGs are similar to those observed in clusters and follow the trends previously defined in studies of dwarf and giant galaxies. However, field UDGs have younger luminosity-weighted ages than do UDGs in clusters. We interpret this result to mean that field UDGs have more extended star formation histories, including some that continue to form stars at low levels to the present time. Finally, we examine stellar population scaling relations that show that UDGs are, as a population, similar to other low surface brightness galaxies. (AU)

FAPESP's process: 18/21661-9 - Cataloguing variable sources and IFU-like science with multiband surveys
Grantee:Fábio Rafael Herpich
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/51680-6 - Exploring the universe: from the galaxies formation to Earth-like planets with the Giant Magellan Telescope
Grantee:João Evangelista Steiner
Support type: Special Projects
FAPESP's process: 18/24389-8 - Spatially resolved study of the initial mass function of nearby galaxies in the near-infrared with WIFIS
Grantee:Carlos Eduardo Barbosa
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 19/23141-5 - Search for asteroids in S-PLUS using THOR
Grantee:Fábio Rafael Herpich
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 18/05392-8 - A new library of fully theoretical stellar population models
Grantee:Paula Rodrigues Teixeira Coelho
Support type: Regular Research Grants
FAPESP's process: 19/11910-4 - Exploiting data from SAM-FP and T80-South
Grantee:Claudia Lucia Mendes de Oliveira
Support type: Regular Research Grants
FAPESP's process: 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center
Grantee:Elisabete Maria de Gouveia Dal Pino
Support type: Multi-user Equipment Program
FAPESP's process: 16/12331-0 - Galaxy evolution in different environments using spatially resolved kinematics and stellar populations
Grantee:Carlos Eduardo Barbosa
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 16/17119-9 - The study of galaxies in groups with SAM-FP and T80-south and the construction of the ABRAS T-100 telescope
Grantee:Claudia Lucia Mendes de Oliveira
Support type: Regular Research Grants
FAPESP's process: 09/54202-8 - Acquisition of a robotic telescope for the Brazilian astronomical community
Grantee:Claudia Lucia Mendes de Oliveira
Support type: Multi-user Equipment Program
FAPESP's process: 16/21664-2 - The Southern-Physics of the local universe survey: calibration, cataloguing and scientific exploitation
Grantee:Laura Maria Sampedro Hernandez
Support type: Scholarships in Brazil - Post-Doctorate