Interacting galaxies: effects in the stellar population and the physical properties of the ionized gas

• Grant number: 10/01490-3
• Support Opportunities: Research Grants - Young Investigators Grants
• Start date: November 01, 2010
• End date: October 31, 2015
• 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

There is plenty evidence that galaxy interactions play an important role in enhancing both star formation and nuclear activity in those galaxies. However, there is still no clear agreement in the literature about the correlation between such interactions and the affected physical properties. Gas motions created by the interaction are likely to significantly alter the chemical state of the involved galaxies and modify the usually smooth radial metallicity gradient often found in isolated disc galaxies. Recent evidence for this hypothesis was found in an observational study of the galaxy pair AM 2306-721 (Krabbe et al. 2008), where the O/H abundance estimated in the disc galaxy presented a defined radial gradient, whereas the companion galaxy showed oxygen abundance relatively homogeneous across the disc. In this project we propose to perform a study about the effects of the interaction on the nuclear activity, star formation, stellar population characteristics, in the velocity field and in the distribution of O/H of a sample of galaxies in interaction. The sample have been selected mainly from the morphological class I of the Arp & Madore (1987) catalogue (interacting spirals with small companions). For this project we have long slit spectroscopic data in the range of 3600 a 7300 Å, obtained with the GMOS spectrograph attached to the 8 m telescope South Gemini. The sample comprises 8 interacting galaxies, as well as 14 galaxy systems apparently in interaction; for which there is no information so far about their radial velocities. (AU)

Scientific publications

(13)

(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)

RAUBER, A. B.; COPETTI, M. V. F.; KRABBE, A. C.. Spectroscopic mapping of the planetary nebula NGC 6302. Astronomy & Astrophysics, v. 563, MAR 2014. (10/01490-3)

KRABBE, A. C.; PASTORIZA, M. G.; WINGE, CLAUDIA; RODRIGUES, I.; DORS, O. L.; FERREIRO, D. L.. The effects of the interactions on the kinematics, stellar population and metallicity of AM 2322-821 with Gemini/GMOS. Monthly Notices of the Royal Astronomical Society, v. 416, n. 1, p. 38-50, SEP 2011. (10/01490-3)

WENDEROTH, E.; FAUNDEZ-ABANS, M.; KRABBE, A. C.; DE OLIVEIRA-ABANS, M.; CUEVAS, H.. A first study of the galaxy HRG 2304 and its companion AM1646-795 (NED01). Astronomy & Astrophysics, v. 529, MAY 2011. (10/01490-3)

DORS, JR., OLI L.; RIFFEL, ROGEMAR A.; CARDACI, MONICA V.; HAEGELE, GUILLERMO F.; KRABBE, ANGELA C.; PEREZ-MONTERO, ENRIQUE; RODRIGUES, IRAPUAN. X-rays as the dominant excitation mechanism of [Fe II] and H-2 emission lines in active galaxies. Monthly Notices of the Royal Astronomical Society, v. 422, n. 1, p. 252-260, MAY 2012. (10/01490-3, 09/14787-7)

ROSA, D. A.; DORS, JR., O. L.; KRABBE, A. C.; HAEGELE, G. F.; CARDACI, M. V.; PASTORIZA, M. G.; RODRIGUES, I.; WINGE, C.. Interaction effects on galaxy pairs with Gemini/GMOS - II: oxygen abundance gradients. Monthly Notices of the Royal Astronomical Society, v. 444, n. 3, p. 2005-2021, NOV 1 2014. (11/08202-6, 10/01490-3, 09/14787-7)

FREITAS-LEMES, P.; KRABBE, A. C.; FAUNDEZ-ABANS, M.; DA ROCHA-POPPE, P.; RODRIGUES, I.; DE OLIVEIRA-ABANS, M.; FERNANDES-MARTIN, V. A.. The peculiar ring galaxy HRG 54103 revisited. Monthly Notices of the Royal Astronomical Society, v. 468, n. 3, p. 3159-3165, JUL 2017. (13/17247-9, 10/01490-3)

DORS, JR., O. L.; CARDACI, M. V.; HAEGELE, G. F.; RODRIGUES, I.; GREBEL, E. K.; PILYUGIN, L. S.; FREITAS-LEMES, P.; KRABBE, A. C.. On the central abundances of active galactic nuclei and star-forming galaxies. Monthly Notices of the Royal Astronomical Society, v. 453, n. 4, p. 4102-4111, NOV 11 2015. (10/01490-3, 09/14787-7)

FAUNDEZ-ABANS, M.; RESHETNIKOV, V. P.; DE OLIVEIRA-ABANS, M.; KRABBE, A. C.; DA ROCHA-POPPE, P. C.; FERNANDES-MARTIN, V. A.; AMORES, E. B.; FREITAS-LEMES, P.. Visiting two objects in the field of the ring galaxy HRG 2302. Astronomy & Astrophysics, v. 574, FEB 2015. (10/01490-3)

KRABBE, A. C.; ROSA, D. A.; DORS, JR., O. L.; PASTORIZA, M. G.; WINGE, C.; HAEGELE, G. F.; CARDACI, M. V.; RODRIGUES, I.. Interaction effects on galaxy pairs with Gemini/GMOS-I: Electron density. Monthly Notices of the Royal Astronomical Society, v. 437, n. 2, p. 1155-1170, JAN 2014. (11/08202-6, 10/01490-3, 09/14787-7)

DORS, JR., OLI L.; CARDACI, MONICA V.; HAEGELE, GUILLERMO F.; KRABBE, ANGELA C.. Metallicity evolution of AGNs from UV emission lines based on a new index. Monthly Notices of the Royal Astronomical Society, v. 443, n. 2, p. 1291-1300, SEP 11 2014. (10/01490-3, 09/14787-7)

DORS, JR., OLI L.; HAEGELE, GUILLERMO F.; CARDACI, MONICA V.; PEREZ-MONTERO, ENRIQUE; KRABBE, ANGELA C.; VILCHEZ, JOSE M.; SALES, DINALVA A.; RIFFEL, ROGERIO; RIFFEL, ROGEMAR A.. Optical and mid-infrared neon abundance determinations in star-forming regions. Monthly Notices of the Royal Astronomical Society, v. 432, n. 3, p. 2512-2528, JUL 2013. (10/01490-3, 09/14787-7)

FAUNDEZ-ABANS, M.; KRABBE, A. C.; DE OLIVEIRA-ABANS, M.; DA ROCHA-POPPE, P. C.; RODRIGUES, I.; FERNANDES-MARTIN, V. A.; FERNANDES, I. F.. A study of the remarkable galaxy system AM 546-324 (the core of Abell S0546). Astronomy & Astrophysics, v. 543, JUL 2012. (10/01490-3)

RAUBER, A. B.; COPETTI, M. V. F.; KRABBE, A. C.. Spectroscopic mapping of the planetary nebula NGC 6302. ASTRONOMY & ASTROPHYSICS, v. 563, p. 15-pg., 2014-03-01. (10/01490-3)