Elemental Abundances in NGC 3516
arXiv:astro-ph/0305267 · doi:10.1086/376901
Abstract
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.
19 pages, 3 color figures. ApJ in press
References in corpus (8)
- XMM-Newton Reflection Grating Spectrometer Observations of Discrete Soft-X-ray Emission Features from NGC 1068
- Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?
- Multi-wavelength study of the Seyfert 1 galaxy NGC 3783 with XMM-Newton
- Absorption and Reddening in the Seyfert Galaxy NGC 3227
- Variable UV Absorption in the Seyfert 1.5 Galaxy NGC 3516: The Case for Associated UV and X-ray Absorption
- The Density and Location of the X-ray Absorbing Gas in NGC 3516
- Simultaneous UV and X-ray Spectroscopy of the Seyfert 1 Galaxy NGC 5548. I. Physical Conditions in the UV Absorbers
- Evidence for an accelerating wind as the broad-line region in NGC 3516