2020.8
Detailed research of IPHAS sources — I. The disrupted late bipolar IPHASX J193718.6+202102
Sabin, L.;Guerrero, M. A.;Zavala, S.;Toalá, J. A.;Ramos-Larios, G.;Gómez-Llanos, V.
Summary: We current an in depth evaluation of the brand new planetary nebula (PN) IPHASX J193718.6+202102 utilizing deep imaging and intermediate- and excessive decision spectroscopy which are interpreted by way of morpho-kinematic and photoionisation modelling. The bodily construction of the nebula consists of a fragmented torus and a particularly faint orthogonal bipolar outflow, opposite to the pinched waist PN morphology prompt by its optical picture. Our kinematic evaluation signifies that the torus is increasing at 25±5 km s−1 and is step by step breaking apart. At an estimated distance of seven.1−0.3+0.8 kpc, the corresponding kinematic age of ∼26000 years is per a faint and disintegrating PN. The intermediate-resolution spectra reveal an excited PN with chemical abundances typical of Sort II PNe. Primarily based on the latter we additionally estimate an preliminary mass for the progenitor within the vary 2-3 M⊙ and a central star (CSPN) mass MCSPN∼0.61 M⊙. The Spitzer MIPS 24 μμm emission that carefully follows the fragmented torus might be attributed to the emission of [O IV] at 25.9 μμm slightly than to mud emission. All the outcomes coherently level in direction of an developed reasonably large bipolar Sort II PN getting ready to dissolving into the interstellar medium.
Journal: Month-to-month Notices of the Royal Astronomical Society (MNRAS), in press
Preprint
