The abundance discrepancy problem in HII regions

By Jorge Garc´ıa-Rojas, C´esar Esteban. 2006

161 citations recorded by the source corpus.

The origin of the abundance discrepancy in nebulae is one of the key problems in the physics of photoionized nebulae. In this work we have analized a sample of Galactic and extragalactic H II regions where the abundance discrepancy have been measured, and we discuss the two main scenarios proposed to explain such discrepancy: temperature fluctuations over the observed volume of the nebulae and chemically inhomogeneous inclusions.

Subfields: Astronomy and Astrophysics, Biomedical Engineering, Instrumentation

View Paper: https://www.semanticscholar.org/paper/11578b204b71108db88ea4a9ff52dfc0a5d0beba

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. F. Bresolin
2. R. Kudritzki
3. G. Carraro
4. M. Urbaneja
5. G. Pietrzyński
6. W. Gieren
7. Daniel Schaerer
8. G. Meynet

In Instrumentation

1. G. Carraro
2. R. Kudritzki
3. G. Pietrzyński
4. M. Urbaneja
5. F. Bresolin
6. W. Gieren

Citations in the corpus

• EXTRAGALACTIC CHEMICAL ABUNDANCES: DO H ii REGIONS AND YOUNG STARS TELL THE SAME STORY? THE CASE OF THE SPIRAL GALAXY NGC 300 (2009, background): “…so-called ‘abundance discrepancy’, consisting in the fact that when O II recombination lines are used to determine O++ abundances in place of the much stronger [O III] collisionally excited lines, the resulting total oxygen abundances are larger, by 0.2 dex on average (García-Rojas & Esteban 2007).”