Calibrating Interstellar Abundances Using Supernova Remnant Radiative Shocks
Journal Article
·
· The Astronomical Journal (Online)
- Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611 (Australia)
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Australian Defence Force Academy, Canberra, ACT 2600 (Australia)
- European Southern Observatory, Av. Alonso de Cordova 3107, 763 0355 Vitacura, Santiago (Chile)
- Department of Physics, Astronomy and Geosciences, Towson University, Towson, MD 21252 (United States)
Using integral field data we extract the optical spectra of shocked interstellar clouds in Kepler’s supernova remnant located in the inner regions of our Galaxy, as well as in the Large Magellanic Cloud, the Small Magellanic Cloud, NGC 6822, and IC 1613. Using self-consistent shock modeling, we make a new determination of the chemical composition of the interstellar medium in N, O, Ne, S, Cl, and Ar in these galaxies and obtain accurate estimates of the fraction of refractory grains destroyed in the shock. By comparing our derived abundances with those obtained in recent works using observations of B-stars, F supergiant stars, and H ii regions, we provide a new calibration for abundance scaling in the range of 7.9≲12+log O/H≲9.1.
- OSTI ID:
- 22897274
- Journal Information:
- The Astronomical Journal (Online), Journal Name: The Astronomical Journal (Online) Journal Issue: 2 Vol. 157; ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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