Name: Paulo C. R. Poppe

Institution: UEFS, Departamento de Fisica, Brasil

e-mail: paulopoppe(no-spam)gmail.com

Partner Contry: BRA

Science Meeting: Yes

User Meeting: Yes

NGO Staff Meeting: No

Presentation: Yes

Format: Poster

Title: GMOS long-slit spectroscopy of the galaxy FM 287-14

Co-author: Faundez-Abans, M. (1), de Oliveira-Abans, M. (1), Martin, V.A.F. (2,3), Rodriguez Ardila, A (1), Wenderoth, E. (4)

Co-authors' Institutions: (1) MCT/Laboratorio Nacional de Astrofisica, Brasil. (2) UEFS, Departamento de Fisica, Brasil. (3) UEFS, Observatorio Astronomico Antares, Brasil. (4) Gemini South, Chile

Abstract:

We herein report the results of long-slit spectroscopy of the peculiar galaxy FM 287-14, which was observed with GMOS South at Gemini in 2006. The 1.5-arcsec slit was aligned along both the "arm-ring" major axis (NW-SE direction) and the minor axis of the central body (NE-SW direction). Two gratings were used with both long-slit positions -- B600/501 and R400/676 -- to cover as much of the visible part of the spectrum as possible. FM 287-14 is a tidally perturbed galaxy suggesting a close companion encounter in the past. The calculated heliocentric systemic velocity is 9,250 km/s (z = 0.031) and the nuclear spectrum exhibits indications of activity. The external "arm-ring" shows clear star formation regions, which must have been triggered by the passage of a density shockwave along the disk of the galaxy. In this poster, we display the radial velocity distribution along the major and minor axes, the radial profile of the [NII]6583/Hα, [OI]6300/Hα, [SII]/Hα and [OIII]/Hβ ratios, and make a preliminary discussion of the population content of the different substructures of the galaxy, as well as of its mass and its structural/morphological characteristics.

Comments: