The effects of interaction on the kinematics and abundance of AM 2229-735

Author(s)

Freitas-Lemes, P. ^[1] ; Rodrigues, I. ^[1] ; Dors, Jr., O. L. ^[1] ; Faundez-Abans, M. ^[2] ; Perez-Montero, E. ^[3]

Affiliation

^[1] Univ Vale Paraiba, BR-12244000 Sao Jos Dos Campos, SP - Brazil

^[2] MCT Lab Nacl Astrofis, BR-37 50436 Itajuba, MG - Brazil

^[3] Inst Astrofis Andalucia CSIC, E-18080 Granada - Spain

• Document type: Journal article
• Source: Monthly Notices of the Royal Astronomical Society; v. 441, n. 2, p. 1086-1094, JUN 2014.
• Web of Science Citations: 4

Abstract

This observational study is about the effects of interaction on the kinematics and chemical abundance of the component galaxies of AM 2229-735. This system is formed by a disc galaxy, NED01, and a compact perturbed Sb(s)-like galaxy, NED02, the latter showing a tail and counter-tail arc-shaped feature. This system could be a progenitor of a polar ring galaxy. The sky-projected tail is very luminous and seems to connect the galaxies. Our study was based on BVRI broad-band imagery as well as long-slit spectroscopy in the wavelength range 4240-8700 angstrom. We estimated heliocentric radial velocities of 17 518 +/- A 25 km s(-1) (NED01) and 17 326 +/- A 27 km s(-1) (NED02). Standard diagnostic diagrams were used to classify the main ionizing source of selected emission-line regions. It turns out that all regions are mainly ionized by massive stars. Using two empirical methods, we found that the H ii regions in AM 2229-735 have high metallicity: 12 + log(O/H) = 8.3-8.6 dex. (AU)

• FAPESP's process: 10/17136-4 - Dynamics of Polar Ring Galaxies
• Grantee: Priscila Freitas Lemes
• Support Opportunities: Scholarships in Brazil - Doctorate