Results 131 to 140 of about 205,774 (262)

Spectral index of the H2O-maser-emitting planetary nebula IRAS 17347 — 3139 [PDF]

open access: bronze, 2005
J. F. Gomez   +7 more
openalex   +1 more source

Amazing Space: Cat's Eye Nebula (NGC 6543) Lithograph [PDF]

open access: yes, 2005
This lithograph features Hubble Space Telescope images and includes text that describes and explains the images. There is also an accompanying inquiry-based classroom activity entitled “In Search of the Complex Structures of Planetary Nebulae.” This ...
Bonnie Eisenhamer
core  

Outflowing Gas in the Planetary Nebula K 3-54

open access: yesThe Astronomical Journal
As planetary nebulae evolve, they develop slow and strong dust-driven stellar winds, making the joint study of dust and gas essential for understanding their nature.
Xiuhui Chen   +5 more
doaj   +1 more source

Primer on Formation and Evolution of Hydrogen-Deficient Central Stars of Planetary Nebulæ and Related Objects

open access: yesGalaxies
We present a brief review of the formation and evolution of hydrogen-deficient central stars of planetary nebulae. We include a detailed description of the main observable features of both the central stars and their surrounding nebulae and review their ...
Marcelo M. Miller Bertolami
doaj   +1 more source

The Secular Evolution of Planetary Nebula IC 418 and Its Implications for Carbon Star Formation

open access: yesThe Astrophysical Journal Letters
The rate of stellar evolution can rarely be measured in real time. The fastest evolution (excluding event-driven evolution), where stars may evolve measurably over decades, is during the post–Asymptotic Giant Branch (AGB) phase. In this Letter we provide
Albert A. Zijlstra, Quentin A. Parker
doaj   +1 more source

Optical Polarization and Near‐Infrared Photometry of the Proto–planetary Nebula Henize 3‐1475 [PDF]

open access: green, 2003
C. V. Rodrigues   +4 more
openalex   +1 more source

The Constant‐Velocity Highly Collimated Outflows of the Planetary Nebula He 2‐90 [PDF]

open access: bronze, 2001
M. A. Guerrero   +4 more
openalex   +1 more source

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