Results 141 to 150 of about 53,151 (238)

Planetary Nebula Morphologies Indicate a Jet-Driven Explosion of SN 1987A and Other Core-Collapse Supernovae

open access: yesGalaxies
I demonstrate the usage of planetary nebulae (PNe) to infer that a pair of jets shaped the ejecta of the core-collapse supernova (CCSN) SN 1987A. The main structure of the SN 1987A inner ejecta, the ‘keyhole’, comprises two low-intensity zones.
Noam Soker
doaj   +1 more source

UBV Photometry of the Bright Nuclei of the Planetary Nebulae [PDF]

open access: bronze, 1968
E. B. Kostjakova   +3 more
openalex   +1 more source

Spectroscopic Survey of Faint Planetary-nebula Nuclei. IV. The A35-type Central Star of Pa 27

open access: yesThe Astrophysical Journal
We present optical spectroscopy of the 12th-magnitude central star of the planetary nebula (PN) Patchick 27 (Pa 27), obtained during a survey of faint PN nuclei (PNNs) with the Low-Resolution Spectrograph of the Hobby–Eberly Telescope.
Howard E. Bond, Gregory R. Zeimann
doaj   +1 more source

Overview of the LAMOST survey in the first decade. [PDF]

open access: yesInnovation (Camb), 2022
Yan H   +26 more
europepmc   +1 more source

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