Credit: X-ray NASA/CXC/RIT/J.Kastner et al., Optical NASA/STScI. Morphologies of Morphologies of Wolf-Rayet Planetary Nebulae Wolf-Rayet Planetary Nebulae based on IFU Observations based on IFU Observations Ashkbiz Danehkar Ashkbiz Danehkar Department of Astronomy, University of Michigan Department of Astronomy, University of Michigan [email protected] Asymmetrical Post-main-sequence Nebulae 8 (APN8) e2021 Asymmetrical Post-main-sequence Nebulae 8 (APN8) e2021
5 APN8 Oct 8, 2021 Integral Field Unit Spectroscopy Wide Field Spectrograph (WiFeS; Dopita + 2007,2010) Image-Slicing Integral Field Unit (IFU) ANU 2.3-m Telescope, Siding Spring Observatory Field-of-view: 25” x 38”, spatial resolution: 1” spectral resolution: R ~ 7000 (~ 20 km/s) R ~ 3000 (~ 50 km/s)
6 APN8 Oct 8, 2021 ANU 2.3 WiFeS Gemini 8.1 GMOS Integral Field Unit Spectroscopy Wide Field Spectrograph (WiFeS; Dopita + 2007,2010) Image-Slicing Integral Field Unit (IFU) ANU 2.3-m Telescope, Siding Spring Observatory Field-of-view: 25” x 38”, spatial resolution: 1” spectral resolution: R ~ 7000 (~ 20 km/s) R ~ 3000 (~ 50 km/s)
7 APN8 Oct 8, 2021 What we learn from IFU Observations Morphologies of non-compact PNe – Compact PNe constrained by high-resolution images Inclinations and orientations – Also compact PNe without detailed morphologies Shock Collision – Velocity dispersion maps – P-V diagram and velocity channel maps Mapping excitation – Low- and high-excitation mapping of extended PNe
11 APN8 Oct 8, 2021 Inclinations and Orientations Galactic PNe around [WR] stars (Danehkar 2021, arXiv:2107.03994) HST images NGC 6578 NGC 6567 NGC 6629
16 APN8 Oct 8, 2021 Future Plan: Excitation Mapping Excitation levels dividing line based on shock models of Raga + 2008 NGC 5189 (Danehkar + 2018, arXiv:1711.11111)
18 APN8 Oct 8, 2021 When a PN may not be a PN! PMR 5 around massive WN star (Parker+Morgan+Russeil, AAO/UKST Hα Survey, 2001) [WN]: Morgan, Parker, Cohen 2006 May be a WN: Todt + 2016 (IAUS) Spiral Morphology similar to WR 104 WiFeS/IFU (observed by Frew in 2009) WR 104: Massive WN+ OB (Tuthill + 1999) Danehkar (in preparation)
19 APN8 Oct 8, 2021 Final Remarks [WR] PNe: mostly elliptical morphologies (arXiv:2107.03994) Deceleration: point-symmetric knots of Hb 4 Shock Collision / ISM Interaction: Hb 4 knots, Pe 1-1 outflows Orientation of compact PNe detectable with IFU, but without details