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Planetary Nebulae (PNs) in the Magellanic Clouds are studied to understand stellar populations and evolution of low- and intermediate-mass stars in different chemical environments. Using HST observations from our LMC and SMC PN…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini , Richard A. Shaw , Max Mutchler

Planetary Nebulae (PNe) have been used satisfactory to test the effects of stellar evolution on the Galactic chemical environment. Moreover, a link exists between nebular morphology and stellar populations and evolution. We present the…

天体物理学 · 物理学 2016-01-27 Letizia Stanghellini

Planetary Nebulae (PNs) in the Magellanic Clouds offer the unique opportunity to study both the population and evolution of low- and intermediate-mass stars, in an environment that is free of the distance scale bias and the differential…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini

Studies of the relationship between planetary nebula morphology and the evolution of the central stars has long suffered from uncertainties in distance determinations, and from the bias of interstellar absorption, that are typical for…

天体物理学 · 物理学 2007-05-23 L. Stanghellini , R. A. Shaw , J. C. Blades , B. Balick

Planetary nebulae (PNe) have three main components: a central star (CS), ionised gas and dust in the nebula. Each of them contains critical chemical fingerprints of their evolution, serving as tracers of the evolution, nucleosynthesis and…

Planetary Nebulae (PNe) in the Large Magellanic Cloud (LMC) offer the unique opportunity to study both the Population and evolution of low- and intermediate-mass stars, by means of the morphological type of the nebula. Using observations…

天体物理学 · 物理学 2009-10-31 Letizia Stanghellini , Richard A. Shaw , Bruce Balick , J. Chris Blades

Planetary nebulae (PNe) exist in a range of different morphologies, from very simple and symmetric round shells, to elliptical, bipolar, and even quadrupolar shapes. They present extremely complex ensembles of filaments, knots, ansae, and…

天体物理学 · 物理学 2009-10-31 Letizia Stanghellini

The morphology of planetary nebulae (PNe) provides an essential tool for understanding their origin and evolution, as it reflects both the dynamics of the gas ejected during the TP-AGB phase, and the central star energetics. Here we study…

天体物理学 · 物理学 2009-10-30 L. Stanghellini , J. C. Blades , S. J. Osmer , M. J. Barlow , X. -W. Liu

In this review we address the progress that has been made toward the understanding the population of Magellanic Cloud planetary nebulae since the last Magellanic Cloud Symposium. Planetary nebulae in the Clouds are not only important as key…

天体物理学 · 物理学 2009-11-13 Letizia Stanghellini

Magellanic Cloud Planetary Nebulae (PNs) offer insight of both the population and evolution of low- and intermediate-mass stars, in environments that are free of the distance bias and the differential reddening that hinder the observations…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini

The correlations between planetary nebula (PN) morphology and the nature of their progenitors are explored by examining homogeneous PN samples in the Galaxy and the Magellanic Clouds. We selected PNe with reliable abundances from spectral…

天体物理学 · 物理学 2007-09-20 Letizia Stanghellini

Planetary nebulae (PN) are an essential tool in the study of the chemical evolution of the Milky Way and galaxies of the Local Group, particularly the Magellanic Clouds. In this work, we present some recent results on the determination of…

天体物理学 · 物理学 2008-08-14 W. J. Maciel , R. D. D. Costa , T. E. P. Idiart

We present a new synthetic model to follow the evolution of a planetary nebula (PN) and its central star, starting from the onset of AGB phase up to the white dwarf cooling sequence. The model suitably combines various analytical…

天体物理学 · 物理学 2009-11-07 P. Marigo , L. Girardi , M. A. T. Groenewegen , A. Weiss

Our understanding of planetary nebulae has been significantly enhanced as a result of several recent large surveys (Parker et al., these proceedings). These new discoveries suggest that the `PN phenomenon' is in fact more heterogeneous than…

星系天体物理 · 物理学 2015-06-04 D. J. Frew , Q. A. Parker

The LMC is ideal for studying the co-evolution of planetary nebulae (PNe) and their central stars, in that the debilitating uncertainties of the Galactic PN distance scale and selection biases from attenuation by interstellar dust do not…

天体物理学 · 物理学 2007-05-23 Richard A. Shaw , Letizia Stanghellini , Max Mutchler , Bruce Balick , J. Chris Blades

Planetary nebulae (PNe) represent the near endpoints of evolution for stars of initial mass $\sim$1-8 $M_\odot$, wherein the envelope of an asymptotic giant branch (AGB) star becomes photodissociated and ionized by high-energy radiation…

太阳与恒星天体物理 · 物理学 2018-10-17 Joel H. Kastner , Albert Ziljstra , Bruce Balick , Raghvendra Sahai

Planetary nebulae (PN) represent the evolutionary fate of the asymptotic giant branch (AGB) stellar envelopes, thus are ideally suited to study the chemical impact of AGB stars. Stellar evolution predict elemental enrichment through the AGB…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini

We present images and slitless spectra which were obtained in HST surveys of Planetary Nebulae (PNe) in both the Large and Small Magellanic Clouds, using the Space Telescope Imaging Spectrograph. These new data on 59 PNe (54 in the LMC and…

天体物理学 · 物理学 2009-11-11 Richard A. Shaw , Letizia Stanghellini , Eva Villaver , Max Mutchler

We used a new generation of asymptotic giant branch (AGB) stellar models that include dust formation in the stellar winds to find the links between evolutionary models and the observed properties of a homogeneous sample of Large Magellanic…

太阳与恒星天体物理 · 物理学 2016-08-08 P. Ventura , L. Stanghellini , F. Dell'Agli , D. A. García-Hernández , M. Di Criscienzo

This review contains: (1) the scientific motivations for studying Planetary Nebulae in the Magellanic Clouds; (2) a review of this field of study, from the origins to the most recent results, focusing on the papers that have been published…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini
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