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astrothesaurus / UAT

The Unified Astronomy Thesaurus is an open, interoperable and community-supported thesaurus of astronomical and astrophysical concepts and their relationships.
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Modify Concepts: [several concepts] #300

Closed katieefrey closed 4 years ago

katieefrey commented 4 years ago

Describe the changes

Please include any additional comments/feedback Suggestion from Sebastien Derriere, Observatoire de Strasbourg

katieefrey commented 4 years ago

Alpha2 Cvn Stars, Compact group of galaxies, and Optical sources all added as NPT as suggested above.

I'd like more information about how "Protoplanetary nebulae" relate to the "Post-asymptotic giant branch". I'm wondering if we need a "Post-asymptotic giant branch stars" concept, and that this would be better to relate to "Protoplaentary nebulae."

Relating Filamentary nebulae and Interstellar filaments seems more straightforward, but would like more information about this as well.

katieefrey commented 4 years ago

From Steve Kawaler: I'd opt for Post-AGB objects as a class (including hot white dwarfs, planetary nebula nuclei in the stellar community). For nebulae, be careful because a planetary nebula is a post-AGB relic but a protoplanetary nebula could also describe the early stages of solar system formation around young stars! These are two very different stages.

katieefrey commented 4 years ago

Post-AGB stars added.

"Alpha2 CVn stars" added as NPT for "Rapidly oscillating Ap star."

"Optical sources" added a NPT for "Visible sources."

Remaining suggestions are pending:

katieefrey commented 4 years ago

Added relationship between Filamentary nebulae and Interstellar filaments.

Holding off on the final relationship suggestion per Dr. Kawaler's comments.

Changes will be seen in next release.