Dr. Ángel R. López-Sánchez

Postdoc at Australian Astronomical Observatory / Macquarie University

Astronomy & Astrophysics
using multiwavelength data

Rainbow over the Anglo-Australian Telescope in Siding Spring Observatory, NSW, Australia © Á.R.L-S.

Research Images

Multiwavelength images of the Blue Compact Dwarf Galaxy NGC 5253

Images from paper: The intriguing HI gas in NGC 5253: an infall of a diffuse, low-metallicity HI cloud?

López-Sánchez, Á.R., Koribalski, B.S. van Eymeren, J. Esteban, C. Kirby, E., Jerjen, H. & Lonsdale, N. 2011, MNRAS, accepted.

NGC 5253 Low resolution

Multiwavelength image (UV + Optical + NIR + HI) of the Blue Compact Dwarf Galaxy NGC 5253. It was obtained combining data in FUV and NUV (cyan, GALEX), R-band (green, Meurer et al. 2006) and Hα (red, Meurer et al. 2006), NIR J-band (orange, 2MASS), and our ATCA low-resolution HI map (dark blue). The synthesised beam of the HI map is 57.8" x 37.5". The plotted contour levels are 0.10 (-3σ), 0.18 and 0.3 Jy beam km s-1. That is Figure 1 of the paper.
© Á.R.L-S.

NGC 5253 Low resolution

Contours of the high-resolution HI map (using `robust', r=0, weighting and including baselines to CA06) overlaid onto a color-image which combines R-band (green), FUV-band (cyan), Hα (red, Meurer et al. 2006, ApJS 165, 307) and the ATCA high-resolution HI map (blue). The synthesized beam (13.6" x 7.6") is displayed at the bottom left corner. The contour levels are 0.032 (3σ), 0.12, 0.22, 0.32, 0.42, 0.52 and 0.62 Jy beam-1 km s-1. Note the HI shell surrounding the NW Hα shell and the HI plume (without any Hα emission associated with it) at the SE, as they were previously noticed by Kobulnicky & Skillman 2008 using VLA data (see their Figure~3). This is Figure 3 of the paper. © Á.R.L-S.

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