It is well known that when measuring electron densities in H II regions locally via emission line ratios the values observed are 100cm-3, but gobal values...
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PublicaciónDiagnostics of the Ionized ISM: The Importance of Density Fluctuations
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PublicaciónDifferential efficiency of massive star formation in NGC 628
The efficiency ratio of massive star formation in the arms of the spiral NGC 628 to that in the interarm region has been determined from the sizes and positions...
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PublicaciónDistribution, sizes, and luminosity function of the HII regions in NGC 4321
From H-alpha CCD observations taken with the 4.2-m William Herschel Telescope, a catalog of 456 H II regions of the inner zone of the spiral galaxy NGC 4321 has...
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PublicaciónDistributions, equivalent widths and metallicities of the H II regions in the spiral galaxies NGC 5457 and NGC 4395
Using CCD observations in the narrow band filters in Hα , Hβ , [O Ii], [O Iii], [S Ii] and [S Iii] lines we have compiled a catalogue of 338 H Ii regions for...
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PublicaciónDust in the nuclei of the Seyfert galaxies Markarian 231 and NGC 4151
Observations carried out with a 8-13 micron grating-spectrometer of Mrk 231 and NGC 4151 are reported. The Mrk 231 data can be fitted to various thermal dust...
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PublicaciónDusty Supernovae Running the Thermodynamics of the Matter Reinserted within Young and Massive Super Stellar Clusters
Following the observational and theoretical evidence that points at core-collapse supernovae (SNe) as major producers of dust, here we calculate the...
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PublicaciónEfficiency of massive star formation in grand design spirals
The present study estimates the efficiency ratio for massive star formation between the arms and the interarm disks of three grand design spirals. The estimate...
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PublicaciónEnergy implications of temperature fluctuations
We quantify the energy radiated through all the collisional lines in a photoionized nebula in the presence of temperature fluctuations in the form of hot spots...
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PublicaciónEvidence for coherent star-forming processes in the discs of spirals
This paper presents examples of star-forming phenomena in the discs of spirals which show symptoms of phase-coherence over kpc scales. Cases are found where...