Publications (13)
The tidally disturbed luminous compact blue galaxy Mkn 1087 and its surroundings
Angel R. Lopez-Sanchez, Cesar Esteban, Monica Rodriguez
We present new broad-band optical and near-infrared CCD imaging together with deep optical intermediate-resolution spectroscopy of Mkn 1087 and its surrounding objects. We analyze…
The intriguing HI gas in NGC 5253: an infall of a diffuse, low-metallicity HI cloud?
Angel R. Lopez-Sanchez, Baerbel Koribalski, Janine van Eymeren +4
(Abridged) We present new, deep HI line and 20-cm radio continuum data of the very puzzling blue compact dwarf galaxy NGC 5253, obtained with the ATCA as part of the `Local Volume…
The environment of nearby Blue Compact Dwarf Galaxies
Angel R. Lopez-Sanchez, Barbel Koribalski, Janine van Eymeren +3
We are obtaining deep multiwavelength data of a sample of nearby blue compact dwarf galaxies (BCDGs) combining broad-band optical/NIR and H photometry, optical spectroscopy and…
The ionized gas at the center of IC 10: A possible localized chemical pollution by Wolf-Rayet stars
Angel R. Lopez-Sanchez, Adal Mesa-Delgado, Luis Lopez-Martin +1
We present results from integral field spectroscopy with the Potsdam Multi-Aperture Spectrograph at the 3.5m telescope at Calar Alto Observatory of the intense star-forming region…
Massive star formation in Wolf-Rayet galaxies: I. Optical and NIR photometric results
Angel R. Lopez-Sanchez, Cesar Esteban
(Abridged) We have performed a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show the presence of a substantial population of massive stars. The…
White Paper on MAAT@GTC
Francisco Prada, Robert Content, Ariel Goobar +41
MAAT is proposed as a visitor mirror-slicer optical system that will allow the OSIRIS spectrograph on the 10.4-m Gran telescopio CANARIAS (GTC) the capability to perform Integral F…
Massive star formation in Wolf-Rayet galaxies: II. Optical spectroscopy results
Angel R. Lopez-Sanchez, Cesar Esteban
(Abridged) We have performed a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show the presence of a substantial population of very young massive…
Massive star formation in Wolf-Rayet galaxies. IV: Colours, chemical composition analysis and metallicity-luminosity relations
Angel R. Lopez-Sanchez, Cesar Esteban
(Abridged) We performed a multiwavelength analysis of a sample of starburst galaxies that show the presence of a substantial population of very young massive (WR) stars. Here we pr…
Electron temperature fluctuations in Seyfert galaxies
Rogemar A. Riffel, Oli L. Dors, Angela Krabbe +1
We use Gemini GMOS-IFU observations of three luminous nearby Seyfert galaxies (Mrk79, Mrk348 and Mrk607) to estimate the electron temperature () fluctuations in the inne…
On the abundance discrepancy problem in HII regions
Jorge Garcia-Rojas, Cesar Esteban
The origin of the abundance discrepancy is one of the key problems in the physics of photoionized nebula. In this work, we analize and discuss data for a sample of Galactic and ext…
IRAS 04000+5052: A not so compact, not so metal-poor HII region
Cesar Esteban, Luis Lopez-Martin, Angel R. Lopez-Sanchez +2
We present new observations of IRAS 04000+5052, a Galactic HII region associated with a young stellar cluster and possibly located at the Perseus arm. Contrary to previous claims,…
Massive star formation in Wolf-Rayet galaxies. III: Analysis of the O and WR populations
Angel R. Lopez-Sanchez, Cesar Esteban
(Abridged) We perform a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show the presence of a substantial population of Wolf-Rayet (WR) stars. In…
Massive star formation in Wolf-Rayet galaxies: IV b. Using empirical calibrations to compute the oxygen abundance
Angel R. Lopez-Sanchez, Cesar Esteban
We have performed a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show a substantial population of very young massive stars, most of them classif…