Results 11 to 20 of about 399 (137)
First release of the IPHAS catalogue of new extended planetary nebulae [PDF]
, 2014 We present the first results of our search for new, extended planetary nebulae (PNe) based on careful, systematic, visual scrutiny of the imaging data from the Isaac Newton Telescope Photometric Ha Survey of the Northern Galactic plane (IPHAS). The newly
Wright, Nicholas J.
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Bipolar planetary nebulae from common-envelope evolution of binary stars
, 2022 Asymmetric shapes and evidence for binary central stars suggest a common-envelope origin for many bipolar planetary nebulae. The bipolar components of the nebulae are observed to expand faster than the rest, and the more slowly expanding material has ...
Röpke, F. +15 more
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, 2014 DFG thanks the European Research Council (ADG-2011 ECOGAL), and Brazilian agencies CNPq (no. 300382/2008-1), CAPES (3400-13-1) and FAPESP (no.2011/12909-8) for financial support.
Monteiro, H., Falceta-Gonçalves, D.
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Multipolar planetary nebulae: not as geometrically diversified as thought [PDF]
, 2011 We present a general three-dimensional model of multipolar planetary nebulae (PNe). By rotating to different viewing angles and adjusting the angles between the multiple lobes, we demonstrate that the model is able to reproduce HST Hα images of 20 ...
Tafoya, D, Kwok, S, Imai, H, Chong, SN
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, 2023 We report observations of a remarkable major axes alignment nearly parallel to the Galactic plane of 5{\sigma} significance for a subset of bulge "planetary nebulae" (PNe) that host, or are inferred to host, short period binaries. Nearly all are bipolar.
Zijlstra, Albert A. +10 more
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The evolution of planetary nebulae
, 2004 We follow hydrodynamically the evolution of spherical model planetary nebulae subject to different initial conditions and with various central stars, investigating how combinations of central-star mass and asymptotic giant branch mass-loss rate ...
M. Perinotto +3 more
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New abundances of planetary nebulae in the Galactic Bulge,
, 2003 . New observations and derived chemical abundances are reported for a sample of 57 bulge planetary nebulae (PN). Together with our previous results, a total of over a hundred objects have been analyzed, which constitute one of the largest samples of ...
W. J. Maciel +2 more
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Emission from spherical circumstellar shells: application to Planetary Nebulae
, 2006 Emission line spectra of planetary nebulae are computed and compared to the observations. This allows for a derivation of the kinematical data concerning specific nebulae as well as for general conclusions concerning stellar evolution.
K. Gesicki
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Aerial and Space‐Borne Seismology on Venus: Viability and Design Implications for Future Missions
Earth and Space Science, Volume 13, Issue 6, June 2026.Abstract Venus' evolution remains a mystery because of the lack of in situ geophysical data to constrain its interior structure. Recently‐selected planetary missions VERITAS (NASA), DAVINCI+ (NASA), and EnVision (ESA) will investigate the planet's interior, surface, and atmospheric chemistry.
Quentin Brissaud +9 more
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Division VI / Commission 24 / Working Group Planetary Nebulae
, 2011 The aims of this Working Group are:•To ensure that scientific symposia on planetary nebulae take place regularly, ideally every 5 years. These symposia would preferably be sponsored by the IAU•To organize and coordinate the Joint Discussions on
Liu, X +22 more
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