Narowband H alpha imaging and long-slit optical and near-infrared spectroscopy are analyzed in a study of the starburst galaxy NGC 7714. The data indicate that...
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PublicationThe starburst galaxy NGC 7714
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PublicationThe Structure and Star Formation History of NGC 5461
We compute photoionization models for the giant extragalactic H II region NGC 5461 and compare their predictions to several observational constraints. Since we...
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PublicationThe Structure and Star-Formation History of NGC 5461
We compute photoionization models for the giant extragalactic H II region NGC 5461, and compare their predictions to several observational constraints. The...
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PublicationThe T<SUB>e</SUB>[N II]-T<SUB>e</SUB>[O III] temperature relation in H II regions and the reliability of strong-line methods
We use a sample of 154 observations of 124 H II regions that have measurements of both Te[O III] and Te[N II], compiled from the literature, to explore the...
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PublicationThe Trapezium Stars. Preliminary Results on Detailed Atmosphere Modeling
A spectroscopic study of the Trapezium Cluster stars in the Orion Nebula is presented. We determine the stellar parameters of the two B0.5V stars theta(1}_{)...
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PublicationThe VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+)
The VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Hα at ˜1 arcsec angular...
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PublicationThree generations of stars: a possible case of triggered star formation
Evidence for triggered star formation linking three generations of stars is difficult to assemble, as it requires convincingly associating evolved massive stars...
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PublicationThree supernova shells around a young M33 star cluster
Using a specialized technique sensitive to the presence of expanding ionized gas, we have detected a set of three concentric expanding shells in an H II region...
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PublicationTwo physical regimes for the giant H II regions and giant molecular clouds in the Antennae galaxies
We have combined observations of the Antennae galaxies from the radio interferometer ALMA (Atacama Large Millimeter/submillimeter Array) and from the optical...