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• W3100573681 abstract "We infer the gas kinematics, diagnostics and ionic radial profiles, distance and central star parameters, nebular photo-ionization model, spatial structure and evolutionary phase of the Planetary Nebula NGC 6741 by means of long-slit ESO NTT+EMMI high-resolution spectra at nine position angles, reduced and analysed according to the tomographic and 3-D methodologies developed at the Astronomical Observatory of Padua (Italy). NGC 6741 ( kpc, yr, ionized mass ) is a dense (electron density up to 12 000 cm-3), high-excitation, almost-prolate ellipsoid ( pc, major, intermediate and minor semi-axes, respectively), surrounded by a sharp low-excitation skin (the ionization front), and embedded in a spherical ( pc), almost-neutral, high-density ( atoms cm-3) halo containing a large fraction of the nebular mass (). The kinematics, physical conditions and ionic structure indicate that NGC 6741 is in a deep recombination phase, started about 200 years ago, and caused by the rapid luminosity drop of the massive (), hot (log ) and faint (log ) post-AGB star, which has exhausted the hydrogen-shell nuclear burning and is moving along the white dwarf cooling sequence. The general expansion law of the ionized gas in NGC 6741, Vexp(km s, fails in the innermost, highest-excitation layers, which move slower than expected. The observed deceleration is ascribable to the luminosity drop of the central star (the decreasing pressure of the hot-bubble no longer balances the pressure of the ionized gas), and appears in striking contrast to recent reports inferring that acceleration is a common property of the Planetary Nebulae innermost layers. A detailed comparative analysis proves that the “U”-shaped expansion velocity field is a spurious, incorrect result due to a combination of: (a) simplistic assumptions (spherical shell hypothesis for the nebula); (b) unfit reduction method (emission profiles integrated along the slit); and (c) inappropriate diagnostic choice (λ4686 of He II, i.e. a thirteen fine-structure components recombination line). Some general implications for the shaping mechanisms of Planetary Nebulae are discussed." @default.
• W3100573681 created "2020-11-23" @default.
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• W3100573681 date "2005-05-30" @default.
• W3100573681 modified "2023-09-27" @default.
• W3100573681 title "The 3-D shaping of NGC 6741: A massive, fast-evolving Planetary Nebula at the recombination-reionization edge" @default.
• W3100573681 cites W1617827352 @default.
• W3100573681 cites W165375515 @default.
• W3100573681 cites W1679491571 @default.
• W3100573681 cites W1965531321 @default.
• W3100573681 cites W1967670950 @default.
• W3100573681 cites W1981724198 @default.
• W3100573681 cites W1984072641 @default.
• W3100573681 cites W1984444794 @default.
• W3100573681 cites W1986510200 @default.
• W3100573681 cites W1987536564 @default.
• W3100573681 cites W1992967270 @default.
• W3100573681 cites W1998377814 @default.
• W3100573681 cites W2001752470 @default.
• W3100573681 cites W2004645596 @default.
• W3100573681 cites W2010931772 @default.
• W3100573681 cites W2011639947 @default.
• W3100573681 cites W2015237104 @default.
• W3100573681 cites W2016270547 @default.
• W3100573681 cites W2019579421 @default.
• W3100573681 cites W2019832220 @default.
• W3100573681 cites W2028096596 @default.
• W3100573681 cites W2032672297 @default.
• W3100573681 cites W2033773310 @default.
• W3100573681 cites W2039446204 @default.
• W3100573681 cites W2040636821 @default.
• W3100573681 cites W2040907229 @default.
• W3100573681 cites W204192878 @default.
• W3100573681 cites W2044243716 @default.
• W3100573681 cites W2046112669 @default.
• W3100573681 cites W2047258477 @default.
• W3100573681 cites W2050651679 @default.
• W3100573681 cites W2052639258 @default.
• W3100573681 cites W2054066284 @default.
• W3100573681 cites W2055640312 @default.
• W3100573681 cites W2058118429 @default.
• W3100573681 cites W2059322949 @default.
• W3100573681 cites W2060430496 @default.
• W3100573681 cites W2060736785 @default.
• W3100573681 cites W2066097373 @default.
• W3100573681 cites W2068928940 @default.
• W3100573681 cites W2077245323 @default.
• W3100573681 cites W2082258682 @default.
• W3100573681 cites W2087800766 @default.
• W3100573681 cites W2088153665 @default.
• W3100573681 cites W2088909704 @default.
• W3100573681 cites W2089884523 @default.
• W3100573681 cites W2095377207 @default.
• W3100573681 cites W2100073869 @default.
• W3100573681 cites W2106642026 @default.
• W3100573681 cites W2123452745 @default.
• W3100573681 cites W2126724428 @default.
• W3100573681 cites W2126860470 @default.
• W3100573681 cites W2128914152 @default.
• W3100573681 cites W2133303148 @default.
• W3100573681 cites W2141291651 @default.
• W3100573681 cites W2142607336 @default.
• W3100573681 cites W2149561394 @default.
• W3100573681 cites W2156887346 @default.
• W3100573681 cites W2170608748 @default.
• W3100573681 cites W2314739385 @default.
• W3100573681 cites W3092962158 @default.
• W3100573681 cites W3098606209 @default.
• W3100573681 cites W3099767877 @default.
• W3100573681 cites W3104355141 @default.
• W3100573681 cites W3104819730 @default.
• W3100573681 cites W3106070715 @default.
• W3100573681 cites W3110709559 @default.
• W3100573681 cites W3166873708 @default.
• W3100573681 cites W4239258777 @default.
• W3100573681 cites W4298350719 @default.
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• W3100573681 doi "https://doi.org/10.1051/0004-6361:20042447" @default.
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