An observational study of the physical and stellar properties of a sample of Hoag-type galaxies

• Grant number: 16/21532-9
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2017
• End date: January 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Angela Cristina Krabbe
• Grantee: Angela Cristina Krabbe
• Host Institution: Instituto de Pesquisa e Desenvolvimento (IP&D). Universidade do Vale do Paraíba (UNIVAP). São José dos Campos , SP, Brazil

Abstract

Interactions between galaxies can trigger a wide range of physical and morphological phenomena, such as long tidal tails of stars and gas bridges and rings. Galaxies with ring appearance, called ring galaxies are ideal objects for studying the formation and non-nuclear stellar evolution, as well as the physical mechanisms of accretion/ interaction, the formation of the disk and the shape of the dark halo. A special class of ring galaxies, the Hoag type has a peculiar morphology, with almost spherical bulges and relatively large surrounding a perfect core at its center. They are extremely rare objects, Whose physical properties were determined for a few objects and whose formation mechanism in Hoag-type objects is still controversial. In this project entitled "An observational study on the physical and stellar properties of a sample of Hoag-type galaxies", we propose to perform a study for a sample of Hoag-type galaxies selected from Category 2 (ringed galaxies) and 10 ( peculiar galaxies with spiral arms) Arp & Madore catalog (1987). For thisspectrophotometry and photometry data will be used, combined with models of stellar population synthesis and photoionization models. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROSA, D. A.; MILONE, A. C.; KRABBE, A. C.; RODRIGUES, I.. Eight luminous early-type galaxies in nearby pairs and sparse groups. I. Stellar populations spatially analysed. ASTROPHYSICS AND SPACE SCIENCE, v. 363, n. 6, JUN 2018. (16/21532-9)

KRABBE, A. C.; ROSA, D. A.; PASTORIZA, M. G.; HAGELE, G. F.; CARDACI, M. V.; DORS, JR., O. L.; WINGE, C.. Interaction effects on galaxy pairs with Gemini/GMOS-III: stellar population synthesis. Monthly Notices of the Royal Astronomical Society, v. 467, n. 1, p. 27-49, MAY 2017. (16/04728-7, 16/21532-9)

MENDES DE OLIVEIRA, C.; RIBEIRO, T.; SCHOENELL, W.; KANAAN, A.; OVERZIER, R. A.; MOLINO, A.; SAMPEDRO, L.; COELHO, P.; BARBOSA, C. E.; CORTESI, A.; et al. The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies, and redshifts with 12 optical filters. Monthly Notices of the Royal Astronomical Society, v. 489, n. 1, p. 241-267, OCT 2019. (16/12331-0, 18/21661-9, 09/54202-8, 14/11806-9, 18/02444-7, 16/23567-4, 16/21532-9, 11/51680-6, 17/23766-0, 17/01461-2, 14/07684-5, 16/21664-2, 14/13723-3, 16/17119-9, 14/18632-6)

ROSA, D. A.; RODRIGUES, I; KRABBE, A. C.; MILONE, A. C.; CARVALHO, S.. The physical properties and evolution of the interacting system AM1204-292. Monthly Notices of the Royal Astronomical Society, v. 501, n. 3, p. 3750-3766, MAR 2021. (13/17247-9, 14/10489-0, 16/21532-9, 11/13250-0)