GOS Catalog: 378 Galactic O Stars with Spectral Classifications
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Description
The Galactic O Stars (GOS) Catalog contains 378 O-type stars with accurate spectral classifications, compiled by the authors and hosted by NASA HEASARC. The catalog is complete for stars brighter than visual magnitude 8 and includes fainter stars, providing cross-identifications, coordinates, photometry, and group membership information. This table was created by the HEASARC in February 2009 based on source data from the Centre de Données astronomiques de Strasbourg (CDS).
Use Cases
Studying the distribution and properties of massive O-type stars based on spectral classifications.
Analyzing stellar group membership and runaway star characteristics based on the provided metadata.
Cross-matching and validating stellar data using the catalog's cross-identifications with other sources.
Investigating stellar photometry across optical and near-infrared bands for spectral energy distribution analysis.
Strengths
Contains 378 specifically identified Galactic O stars.
Provides accurate spectral classifications, a key feature for stellar astrophysics.
Includes multi-source photometry (Tycho-2, Johnson, Stroemgren, NIR) and cross-identifications.
Catalog is complete for stars with visual magnitude (V) less than 8.
Limitations
Row count is unknown, which may limit suitability assessment.
Column-level documentation is absent; field semantics must be inferred after download.
Astrometric distances are provided for only 24 of the nearest stars.
Provenance
Source
National Aeronautics and Space Administration (NASA) HEASARC, based on source data from the Centre de Données astronomiques de Strasbourg (CDS).
Collection Method
Catalog compiled by authors, with the HEASARC table created from electronic versions of specific source tables.
Time Range
Catalog creation date is February 2009; temporal coverage of the underlying observations is not specified.
Freshness
Last updated 2026-03-13 20:04:11.089415; freshness should be verified.
Geography
Galactic (Milky Way).
License is listed as 'other-license-specified'; terms should be reviewed before use. File formats include BIN and HTML.