Elemental Abundances in NGC 3516

Details Elemental Abundances in NGC 3516 Elemental Abundances in NGC 3516

2003-05-15

arxiv.org/abs/astro-ph/0305267v1

Astrophys.J. 594 (2003) 128-135

Astronomy and Astrophysics

Astrophysics

19 pages, 3 color figures. ApJ in press

Scientific paper

10.1086/376901

We present RGS data from an XMM-Newton observation of the Seyfert 1 galaxy NGC 3516, taken while the continuum source was in an extreme low state. The spectrum shows numerous emission lines including the H-like lines of C, N and O and the He-like lines of N, O and Ne. These data show that the N lines are far stronger than would be expected from gas of solar abundances. Based on our photoionization models, we find that N is overabundant compared to C, O and Ne by at least a factor of 2.5. We suggest this is the result of secondary production of N in intermediate mass stars, and indicative of the history of star formation in NGC 3516.

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