search

astrothesaurus / UAT

The Unified Astronomy Thesaurus is an open, interoperable and community-supported thesaurus of astronomical and astrophysical concepts and their relationships.
http://astrothesaurus.org/
Other
35 stars 13 forks source link

Spectroscopy clean up #354

Open katieefrey opened 2 years ago

katieefrey commented 2 years ago

Spectroscopy has these child concepts: Atomic spectroscopy Electronic spectroscopy Galaxy spectroscopy Lyman alpha forest Molecular spectroscopy Radio spectroscopy Rotational spectroscopy Transmission spectroscopy Vibrational spectroscopy Ice spectroscopy

A mix of types of spectroscopy (vibrational, transmission, rotational...) and spectroscopy of particular "objects" (ice, galaxy....), and maybe other types?

Lyman alpha forest is absorption lines in the spectra of galaxies/quasars caused by Lyman-alpha electron transition of the neutral hydrogen atom. This seems similar in nature to something like Interstellar absorption which is defined in the UAT as "The absorption of light from stars and other objects by intervening gas and dust in interstellar space." So perhaps Lyman alpha forest should live somewhere under galaxies and/or quasars, (like Interstellar absorption lives under ISM).

Possible add related concept links from these two back to spectroscopy?

katieefrey commented 2 years ago

Need to also sort out new concepts:

Gamma ray spectroscopy UV spectroscopy Infrared spectroscopy

BartlettAstro commented 5 months ago

@katieefrey is the concern that Lyman alpha forest is not a form of spectroscopy? that we have a set of spectroscopy method (eg vibrational, transitional), a set of spectroscopy of thing (e.g. galaxy, ice) and a set of spectroscopy at wavelength (eg gamma-ray, UV)? that mass spectroscopy is child of astronomical techniques? that something else needs to be done with these concepts?

katieefrey commented 5 months ago

@BartlettAstro

I created this issue after some discussion with Brett McGuire that was initially about Laboratory Astrophysics, where we talked a little about how "method", "thing", and "wavelength" spectroscopy are organized together under the general heading of "spectroscopy." I will forward you and Daniel a PDF of the email conversation. The result of the Lab Astro discussion is the hierarchy in the excel file linked from this issue: https://github.com/astrothesaurus/UAT/issues/356 I felt like the spectroscopy aspects still needed some thought about how "method", "thing", and "wavelength" spectroscopy are organized together under the general heading of "spectroscopy" (both types are "instance relationships"), but it could also be fine to leave them as is.

Other than that, there is a concern related to Lyman alpha forest and where it fits in the UAT. Looking at z39-19 2005r2010 section 8 Relationships, Spectroscopy --> Lyman alpha forest is not: 1) a generic relationship (section 8.3.1) 2) an instance relationship (8.3.2) but it could potentially be a part of a whole (8.3.3). I would want to someone to take a look at this.