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.

Nebula Images

Narrow-filter imaging of Galactic HII Regions

An animation showing the best pictures

That is part of the work I'm doing with César Esteban, Sergio Simón-Díaz, Jorge García-Rojas and Luis López-Martín (IAC). We obtained narrow-band images in [O III], Hα and [SII] filters of a sample Galactic H II regions (Orion Neb., Lagoon Neb., Eagle Neb., Cocoon Neb., Crescent Neb. among others) to analyse their ionization structure and, using complementary optical spectroscopy of both the ionized gas and the ionizing star, compare the observed properties with the predictions given by photoionization models such CLOUDY.

As example of this research, please have a look to this recent paper: A global study of the H II region M 43 and its ionizing star I. Stellar parameters and nebular empirical analysis, by Simón-Díaz, S., García-Rojas, J., Esteban, C., Stasinska, G., López-Sánchez, Á.R., & Morisset, C. 2011 A&A, 530, 57.

| Publication date: 06.2011 | Link to ADS | Link to arXiv:astro-ph/1103.3628 | PDF from this webpage |

Animation showing some of the analyzed Galactic Nebulae.
© Á.R.L-S., Sergio Simón-Díaz, Jorge García-Rojas, César Esteban & Luis López-Martín.

| Updated: 07.07.2011 | Released: 27.01.2011 |