Datasetpublic

astronolan/galaxy-mentions-hats

Galaxy Mentions HATS A HATS catalog of 43,546 resolved literature mentions from astronolan/galaxy-mentions, prepared for efficient spatial crossmatching with the Multimodal Universe HATS catalogs. Each row is a mention in a paper, not a deduplicated astronomical object. Multiple rows may therefore describe the same galaxy. The optional wiki_entity_id groups mentions using the current 1 arcsecond connected-components build, while mention_id remains the unique row identifier.… See the full description on the dataset page: https://huggingface.co/datasets/astronolan/galaxy-mentions-hats.

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Dataset Card

Galaxy Mentions HATS

A HATS catalog of 43,546 resolved literature mentions from `astronolan/galaxy-mentions`, prepared for efficient spatial crossmatching with the Multimodal Universe HATS catalogs.

Each row is a mention in a paper, not a deduplicated astronomical object. Multiple rows may therefore describe the same galaxy. The optional wiki_entity_id groups mentions using the current 1 arcsecond connected-components build, while mention_id remains the unique row identifier.

Open and crossmatch with LSDB

python

import lsdb

mentions = lsdb.open_catalog(
    "hf://datasets/astronolan/galaxy-mentions-hats"
)
hsc = lsdb.open_catalog(
    "hf://datasets/UniverseTBD/mmu_hsc_pdr3_dud_22.5"
)

matches = mentions.crossmatch(hsc, radius_arcsec=1.0)
result = matches.compute()

All catalog columns are loaded by default, including the nested evidence_quotes field. The catalog includes a default 10 arcsecond HATS margin cache.

Construction choices

—Included: 43,546 mentions with resolved coordinates.
—Excluded from this spatial catalog: 786 unresolved mentions. They remain available in the source dataset.
—Row model: one row per mention; no coordinate deduplication was performed.
—Coordinates: FK5 J2000 rows were transformed to ICRS with Astropy; rows already marked ICRS were left unchanged.
—Largest numeric coordinate change during FK5 J2000 to ICRS transformation: 0.031673806 arcsec.
—Median change across all resolved rows: 0.021795346 arcsec.
—Spatial index: _healpix_29, generated by hats-import.
—Default margin: 10 arcseconds.
—HATS frame: equatorial (ICRS).
—No hats_cols_default projection is set; all columns load by default.
—No hats_cols_survey_id property is set, matching current MMU HATS practice.
—No coordinate epoch is declared because J2000 was the input FK5 equinox, not an observation epoch.

Schema

Column	Type	Meaning
`_healpix_29`	int64	HATS spatial index generated from ICRS `ra` and `dec`.
`mention_id`	string	Unique source mention identifier.
`ra`	float64	ICRS right ascension in degrees.
`dec`	float64	ICRS declination in degrees.
`name`	string	Name used in the source paper.
`additional_names`	list<string>	Additional names used in the same paper.
`coordinate_resolution_name`	string, nullable	Name used during coordinate resolution.
`mention_summary`	string	Paper-specific summary of the mention.
`uat_terms`	list<string>	Unified Astronomy Thesaurus terms.
`discussion_extent`	string	Approximate extent of the discussion in the paper.
`arxiv_id`	string	Source arXiv identifier.
`resolver_api_or_agent`	string	Whether resolution used the NED API or an agent stage.
`resolver_method_used`	string	Successful coordinate-resolution method.
`resolver_agent_confidence`	string, nullable	Agent confidence where an agent was used.
`ned_object_name`	string, nullable	NED object name when available.
`ned_physical_type`	string, nullable	NED physical type when available.
`ned_position_refcode`	string, nullable	NED position reference code when available.
`ned_url`	string, nullable	NED lookup URL when available.
`evidence_quote_count`	int32	Number of embedded evidence quotes.
`evidence_quotes`	nested table with `quote_id` and `quote`	Full supporting passages and quote IDs; represented using the MMU-compatible packed nested-column layout.
`wiki_entity_id`	string	Identifier from the current 1 arcsecond entity build.

Provenance

—Source repository revision: e5fde49f25aa5bc331f7d243803ac4f10bfc169c
—Entity method: 1 arcsecond spherical crossmatch clustered as connected components.
—Entity build version: 1arcsec-connected-components-v1
—Entity membership SHA-256: 1ab1756e514c5eb0b6d1b062f610b3a9d1377cef7e7b2223e2beafc09356a35f
—Entity count: 13,616.
—Toolchain: hats-import 0.10.4, hats 0.10.4, Astropy 8.0.1, and PyArrow 25.0.0.

The reproducible build and validation scripts are maintained with the source project. The HATS catalog contains 83,707 embedded evidence quotations. Please retain attribution to the source papers when redistributing or presenting those passages.

License

CC BY 4.0. Attribution should identify this catalog, the source Galaxy Mentions dataset, and the original papers represented by quoted passages.