Results 201 to 210 of about 7,989 (218)
ALMA high spatial resolution observations of the dense molecular region of NGC 6302. [PDF]
Astron Astrophys, 2017 Santander-García M +7 more
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The south margin of the central Altyn is an early paleozoic tectonic unit confirmed by Zircon dating evidence. [PDF]
Sci RepMa T, Liu L, Zhang S, Gai Y, Zhai M.
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All-Glass 100 mm Diameter Visible Metalens for Imaging the Cosmos. [PDF]
ACS NanoPark JS +10 more
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Mixed Cluster Ions of Magnesium and C<sub>60</sub>. [PDF]
J Phys Chem AReider AM +4 more
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Molecules and solids in planetary nebulae and proto-planetary nebulae
Advances in Space Research, 2007Abstract Recent millimeter-wave and infrared spectroscopic observations have identified a large number of organic molecules through their rotational and vibrational transitions. In particular, the detections of the stretching and bending modes of aliphatic and aromatic compounds have revealed a continuous synthesis of organic materials at the late ...
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1996
This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.
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This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.
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Astrophysics and Space Science, 1994
Hydrodynamical calculations are becoming increasingly successful at understanding the shapes and kinematics of planetary nebulae (PNs). The most successful models are two-dimensional interacting stellar wind models for which the PN nucleus is assumed to originally expel much or most of its mass in an equatorial waistband.
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Hydrodynamical calculations are becoming increasingly successful at understanding the shapes and kinematics of planetary nebulae (PNs). The most successful models are two-dimensional interacting stellar wind models for which the PN nucleus is assumed to originally expel much or most of its mass in an equatorial waistband.
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CO in Planetary Nebulae and Proto-Planetary Nebulae
1997The evolution between the asymptotic giant branch (AGB) and the planetary nebula (PN) phases has long been a “missing link” in our understanding of stellar evolution. Through the study of cool IRAS sources, an increasing number of transition objects, or “proto-planetary nebulae”, has now been identified.
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