Results 111 to 120 of about 172,889 (233)

Generalized Te([O iii])–Te(He i) Discrepancies in Ionized Nebulae: Possible Evidence of Case B Deviations and Temperature Inhomogeneities

open access: yesThe Astrophysical Journal
The physics of recombination lines in the He i singlet system is expected to be relatively simple, supported by accurate atomic models. We examine the intensities of He i singlets λ 3614,  λ 3965,  λ 5016,  λ 6678, and  λ 7281 and the triplet He i λ 5876
J. E. Méndez-Delgado   +13 more
doaj   +1 more source

Planetary nebulae after common-envelope phases initiated by low-mass red giants [PDF]

open access: bronze, 2013
Philip D. Hall   +3 more
openalex   +1 more source

Identification Charts for Planetary Nebulae

open access: yesJournal of Mathematical and Fundamental Sciences, 2019
. At Dr. L. Perek's request, identification charts for 12 known planetary nebulae, of which the locations were not certain, are given.   Ichtisar. Atas permintaan Dr. L. Perek, peta pengenal untuk 12 kabut planit jang letaknja diragukan, disadjikan dalam
Pik Sin The
doaj  

PyEMILI: A New Generation Computer-aided Spectral Line Identifier

open access: yesThe Astrophysical Journal Supplement Series
Deep high-dispersion spectroscopy of Galactic photoionized gaseous nebulae, mainly planetary nebulae and H ii regions, has revealed numerous emission lines.
Zhijun Tu   +3 more
doaj   +1 more source

Science with the ngVLA: Planetary Nebulae [PDF]

open access: green, 2018
Joel H. Kastner   +3 more
openalex   +1 more source

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