Results 71 to 80 of about 205,774 (262)

THE DETECTION OF C60 IN THE WELL-CHARACTERIZED PLANETARY NEBULA M1-11 [PDF]

, 2013
We performed multiwavelength observations of the young planetary nebula (PN) M1-11 and obtained its elemental abundances, dust mass, and the evolutionary status of the central star.
Masaaki Otsuka, Masaaki Otsuka, F. Kemper, S. Hyung, B. Sargent, B. Sargent, M. Meixner, A. Tajitsu, Kenshi Yanagisawa   +8 more
semanticscholar   +1 more source

Petrography of phosphates in CI and CY carbonaceous chondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison, A. J. King, R. H. Jones, L. Piani   +3 more
wiley   +1 more source

Panchromatic HST/WFC3 Imaging Studies of Young, Rapidly Evolving Planetary Nebulae. II. NGC 7027

The Astrophysical Journal, 2022
The iconic planetary nebula (PN) NGC 7027 is bright, nearby ( D ∼ 1 kpc), highly ionized, intricately structured, and well observed. This nebula is hence an ideal case study for understanding PN shaping and evolution processes.
Paula Moraga Baez, Joel H. Kastner, Bruce Balick, Rodolfo Montez Jr., Jesse Bublitz   +4 more
doaj   +1 more source

Birth and early evolution of a planetary nebula [PDF]

, 1998
The final expulsion of gas by a star as it forms a planetary nebula --- the ionized shell of gas often observed surrounding a young white dwarf --- is one of the most poorly understood stages of stellar evolution.
A Frank, A Frank, A Riera, G Mellema, IG Kolesnik, J Cantó, J Maddox, JR Kozok, JR Kozok, Kailash C. Sahu, KC Sahu, KG Henize, KG Henize, KJ Borkowski, KU Ratnatunga, LR Youngelson, M Bobrowsky, M Bobrowsky, M Livio, M Livio, M Morris, M Parthasarathy, M Parthasarathy, M. Parthasarathy, Matthew Bobrowsky, N Soker, Pedro García-Lario, S Casertano, S Kwok, SR Pottasch, T Blöcker, T Blöcker, V Icke, WA Feibelman   +33 more
core   +3 more sources

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Multiple outflows in the planetary nebula NGC 6058

, 2013
We present narrow-band [O III]lambda5007 and H-alpha images, as well as long-slit high-resolution echelle spectra of the planetary nebula NGC 6058. Our data reveal that NGC 6058 is a multipolar planetary nebula of about ~45 arcsec in extent and formed by
Ayala, S., Contreras, M. E., Guillén, P. F., Miranda, L. F., Ortiz-Ambriz, A., Vázquez, R., Zavala, S.   +6 more
core   +1 more source

Abundances of Planetary Nebula M1-42 [PDF]

, 2007
The spectra of the planetary nebula M1-42 is reanalysed using spectral measurements made in the mid-infrared with the Spitzer Space Telescope. The aim is to determine the chemical composition of this object.
Aller, Benjamin, Bernard Salas, Bernard-Salas, Blocker, Cahn, Clegg, Condon, Davey, de Graauw, Exter, Fluks, Houck, Hummer, J. Bernard-Salas, Kerber, Kingsburgh, Liu, Liu, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Pottasch, Preite-Martinez, Ratag, S. R. Pottasch, Stanghellini, T. L. Roellig, Torres-Peimbert, Tsamis, Webster, Werner, Zijlstra   +38 more
core   +3 more sources

The Planetary Nebula Spectrograph survey of S0 galaxy kinematics - Data and overview [PDF]

, 2013
Context. The origins of S0 galaxies remain obscure, with various mechanisms proposed for their formation, likely depending on environment. These mechanisms would imprint different signatures in the galaxies' stellar kinematics out to large radii ...
A. Cortesi, A. Cortesi, A. Cortesi, M. Arnaboldi, L. Coccato, M. Merrifield, O. Gerhard, S. Bamford, A. Romanowsky, A. Romanowsky, N. Napolitano, N. G. Douglas, K. Kuijken, M. Capaccioli, K. C. Freeman, A. Chies-Santos, V. Pota   +16 more
semanticscholar   +1 more source

Sulfide–Metal Assemblages on CR2 Chondrule Rims: Products of Nebular Fission–Sulfidization and Parent Body Oxidation–Serpentinization

Meteoritics &Planetary Science, EarlyView.
Abstract We conducted a scanning electron microscopy (SEM) and transmission electron microscopy (TEM) study of sulfide–metal assemblages (SMAs) in minimally to moderately altered CR2 chondrites. The assemblages occur on chondrule rims and consist of kamacite cores rimmed by pyrrhotite.
S. A. Singerling, A. J. Brearley
wiley   +1 more source

Abell 41: shaping of a planetary nebula by a binary central star?

, 2010
We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close-binary system MT Ser.
Abell, Balick, Balick, Beaulieu, Bond, Bruch, Bryce, D. Jones, D. L. Mitchell, D. Pollacco, De Marco, Grauer, Gurzadyan, J. A. López, J. Meaburn, Jones, Kahn, Kwok, M. Lloyd, M. M. Rubio-Díez, M. Santander-García, Meaburn, Meaburn, Meaburn, Miszalski, Mitchell, N. M. H. Vaytet, Nordhaus, Ogloza, Phillips, Pollacco, Ramos-Larios, Sabbadin, Sahai, Santander-García, Shimanskii, Solf, Steffen, Sánchez Contreras, T. J. O'Brien, Wareing, Weinberger   +41 more
core   +1 more source