Near-Infrared Spectroscopy of Young Galactic Supernova Remnants

Abstract

Young Galactic supernova remnants (SNRs) are where we can observe closely the supernova (SN) ejecta and its interaction with circumstellar/interstellar medium. Therefore, they provide an opportunity to explore the explosion and the final stage of the evolution of massive stars. Near-infrared (NIR) emission lines in SNRs mostly originate from shocked dense material. In shocked SN ejecta, forbidden lines from heavy ions are prominent, while in shocked circumstellar/interstellar medium, [Fe II] and H2 lines are prominent. [Fe II] lines are strong in both media, and therefore [Fe II] line images provide a good starting point for the NIR study of SNRs. There are about twenty SNRs detected in [Fe II] lines, some of which have been studied in NIR spectroscopy. We will review the NIR [Fe II] observations of SNRs and introduce our recent NIR spectroscopic study of the young core-collapse SNR Cas A where we detected strong [P II] lines.

4 pages, 4 figures, Invited talk at the 12th Asia-Pacific Regional IAU Meeting, Error in Figure 3 is fixed

References in corpus (4)

• Phosphorus in the Young Supernova Remnant Cassiopeia A
• [Fe II] and H2 filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind
• Empirical determination of Einstein A-coefficient ratios of bright [Fe II] lines
• UKIRT Widefield Infrared Survey for Fe${}^{+}$

Cited by in corpus (9)

• Infrared [Fe II] Emission Lines from Radiative Atomic Shocks
• G11.2-0.3: The Young Remnant of a Stripped-Envelope Supernova
• Near-infrared [Fe II] and H${}_2$ Emission-line Study of Galactic Supernova Remnants in the First Quadrant
• Near-Infrared Knots and Dense Fe Ejecta in the Cassiopeia A Supernova Remnant
• The Supernova Remnant Population of NGC6946 as Observed in [Fe II] 1.644 $\mu$m with HST
• Near-infrared spectroscopy of nearby Seyfert galaxies: Is there evidence for the shock excitation in narrow-line regions?
• Spatial Variations and Breaks in the Optical-NIR spectra of the Pulsar and PWN in SNR 0540-69.3
• Near-Infrared Spectroscopy of Dense Ejecta Knots in the Outer Eastern Area of the Cassiopeia A Supernova Remnant
• Extended Ionized Fe Objects in the UWIFE Survey