NGC 2440: A MORPHO-KINEMATICAL MODEL

Autor(es)

Lago, P. J. A. ; Costa, R. D. D.

• Tipo de documento: Artigo Científico
• Fonte: REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 52, n. 2, p. 329-337, OCT 2016.
• Citações Web of Science: 0

Resumo

The 3D structure and position-velocity (P-V) diagrams of NGC 2440 were modeled aiming to describe the morphology of this object, specially its core. High resolution spectra, HST images and P-V diagrams were used to reproduce the 3D structure of the nebula using SHAPE. The best model for the nebula is a torus torn apart in three pieces by interaction with the surrounding medium, either winds or the radiation field. Orientation angles of 27 +/- 5 and -5 +/- 3 degrees were derived for the bipolar components at PA of 85 and 35 degrees respectively. No additional bipolar lobes were required to model the observed features. Using our velocity field, a distance of 1.8 +/- 0.5 kpc was derived for the nebula. These results are the first, obtained for NGC 2440 from modeling in a 3D environment. (AU)

• Processo FAPESP: 10/18835-3 - Nebulosas planetárias, estrelas e evolução química de sistemas estelares
• Beneficiário: Roberto Dell'Aglio Dias da Costa
• Linha de fomento: Auxílio à Pesquisa - Temático