Results 101 to 110 of about 191,657 (282)

THE CHANDRA PLANETARY NEBULA SURVEY (ChanPlaNS). II. X-RAY EMISSION FROM COMPACT PLANETARY NEBULAE [PDF]

, 2014
We present results from the most recent set of observations obtained as part of the Chandra X-ray observatory Planetary Nebula Survey (ChanPlaNS), the first comprehensive X-ray survey of planetary nebulae (PNe) in the solar neighborhood (i.e., within ∼1 ...
M. Freeman, R. Montez, J. Kastner, B. Balick, D. Frew, D. Jones, B. Miszalski, R. Sahai, E. Blackman, Y. Chu, O. D. Marco, A. Frank, M. Guerrero, J. López, A. Zijlstra, V. Bujarrabal, R. Corradi, J. Nordhaus, Q. Parker, C. Sandin, D. Schonberner, N. Soker, J. Sokoloski, M. Steffen, J. Toalá, T. Ueta, E. Science, Laboratory for Multiwavelength Astrophysics, R. I. O. Technology, D. PhysicsAstronomy, V. University, D. Astronomy, U. Washington, M. R. C. F. Astronomy, AstrophysicsAstrophotonics, M. University, South African astronomical Observatory, Southern African Large Telescope Foundation, Jet propulsion Laboratory, C. I. O. Technology., D. PhysicsAstronomy, U. Rochester, U. Illinois, Inst. de Astrof'isica de Andaluc'ia, Iaa-Csic, Glorieta de la Astronom'ia sn, I. D. Astronom'ia, Universidad Autonoma de Mexico, S. O. Physics, Astronomy, U. Manchester, O. Nacional, A. Henares, Spain., Instituto de Astrof'isica de Canarias, Tenerife, D. Astrof'isica, U. L. Laguna, N. Astronomy, A. Fellow, Center for Computational Relativity, Gravitation, D. D. F'isica, U. Atacama, Copiap'o, Chile., E. Observatory, Santiago, Australian Astronomical Observatory, Epping, Australia Leibniz Institute for Astrophysics Potsdam, Columbia Astrophysics Laboratory, Columbia University, U. Denver, Departamento de F'isica Te'orica, U. A. D. Madrid   +75 more
semanticscholar   +1 more source

The solar system Fe/Mg ratio

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 529-543, March 2025.
Abstract Solar wind Fe and Mg fluences (atoms/cm2) were measured from Genesis collectors. Fe and Mg have similar first ionization potentials and solar wind Fe/Mg should equal the solar ratio. Solar wind Fe/Mg is a more valid measure of solar composition than CI chondrites and can be measured more accurately than spectroscopic photospheric abundances ...
D. S. Burnett, A. J. G. Jurewicz, D. S. Woolum, Y. Guan, V. S. Heber, R. Hervig, M. Humayun, K. D. McKeegan, L. R. Nittler, C. T. Olinger, D. B. Reisenfeld, J. Wang   +11 more
wiley   +1 more source

Spectroscopic confirmation of the planetary nebula nature of PM1-242, PM1-318 and PM1-333 and morphological analysis of the nebulae

, 2009
We present intermediate resolution long-slit spectra and narrow-band Halpha, [NII] and [OIII] images of PM1-242, PM318 and PM1-333, three IRAS sources classified as possible planetary nebulae.
Acker, Balick, Balick, Bloecker, Brocklehurst, C. B. Pereira, Condon, Corradi, Goldman, Guerrero, Henry, Kingsburgh, L. F. Miranda, M. A. Guerrero, Manchado, Miranda, Miranda, Miranda, Peimbert, Preite-Martínez, Sahai, Sahai, Seaton, Shaver, Stanghellini, Vázquez   +25 more
core   +1 more source

Catalog of Planetary Nebulae Detected by GALEX and Corollary Optical Surveys

The Astrophysical Journal Supplement Series, 2023
Planetary nebulae (PNs) consist of an ionized envelope surrounding a hot central star (CSPN) that emits mostly at ultraviolet (UV) wavelengths. UV observations, therefore, provide important information on both the CSPN and the nebula. We have matched the
M. A. Gómez-Muñoz, L. Bianchi, A. Manchado   +2 more
doaj   +1 more source

A hydrodynamical study of multiple‐shell planetary nebulae [PDF]

, 2014
We present the result of a study on the expansion properties and internal kinematics of round/elliptical planetary nebulae of the Milky Way disk, the halo, and of the globular cluster M 15.
D. Schoênberner, R. Jacob, Holger Lehmann, G. Hildebrandt, M. Steffen, A. Zwanzig, C. Sandin, R. Corradi, R. Corradi   +8 more
semanticscholar   +1 more source

Mid‐infrared detection and characterization of refractory inclusions in CM and CO chondrites: A non‐destructive approach for returned space samples

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 544-569, March 2025.
Abstract Refractory inclusions (RIs) in chondrites are widely used as tracers of early solar system formation conditions. In the context of sample‐return missions, a non‐destructive and non‐invasive analytical tool that can rapidly detect and characterize RIs in space samples during their early phase of study is highly needed.
Jean Charlier, Alice Aléon‐Toppani, Rosario Brunetto, Jérôme Aléon, Ferenc Borondics   +4 more
wiley   +1 more source

SATELLITE: Application to Planetary Nebulae IFU Data

Galaxies, 2022
The integral field unit (IFU) spectroscopic view of extended ionized nebulae, such as planetary nebulae (PNe), H II regions, and galaxies, has changed the approach of studying these objects, providing a simultaneous characterization in both spatial ...
Stavros Akras, Hektor Monteiro, Jeremy R. Walsh, Isabel Aleman, Denise R. Gonçalves, Panayotis Boumis   +5 more
doaj   +1 more source

Planetary nebulae

37 pages, 25 figures; this is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N.
De Marco, Orsola, Aleman, Isabel, Akras, Stavros   +2 more
openaire   +2 more sources

New planetary nebula [PDF]

Astronomische Nachrichten, 1896
n ...
openaire   +2 more sources

PAH formation in O-rich planetary nebulae [PDF]

, 2014
Polycyclic aromatic hydrocarbons (PAHs) have been observed in O-rich planetary nebulae towards the Galactic Bulge. This combination of oxygen-rich and carbon-rich material, known as dual-dust or mixed chemistry, is not expected to be seen around such ...
L. Guzman-Ramirez, E. Lagadec, D. Jones, A. Zijlstra, K. Gesicki   +4 more
semanticscholar   +1 more source