First Byurakan Survey Blue Stellar Objects Catalog

1103 blue stellar objects were identified from low-dispersion spectroscopic plates in the First Byurakan Survey. The catalog was compiled and revised by the author, cross-correlated with multiple optical and multi-wavelength catalogs like SDSS and 2MASS, and published via NASA HEASARC in October 2008. It supersedes a previous 1999 edition and includes updated SIMBAD and NED data, DSS positions, and refined spectral classifications.

Use Cases

• Study a complete sample of white dwarfs and hot sub-dwarfs based on the blue stellar object selection.
• Investigate cataclysmic variables and bright AGN using the cross-correlated multi-wavelength data from ROSAT, IRAS, and other catalogs.
• Analyze stellar proper motion and variability based on the checks performed by the author.
• Conduct comparative studies of object properties using the updated SIMBAD, NED, and revised photometry data.

Strengths

• Contains 1103 blue stellar objects, providing a substantial sample for statistical studies.
• Cross-correlated with 8 major external catalogs (MAPS, USNO-B1.0, SDSS, 2MASS, ROSAT, IRAS, NVSS, FIRST), enhancing multi-wavelength utility.
• Includes updated data from SIMBAD and NED, along with accurate DSS1 and DSS2 positions and revised photometry.
• Covers a surveyed region of 4000 square degrees, offering a specific spatial scope.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last updated 2026-03-13 19:55:53.373258; freshness should be verified as the underlying data collection period was 1990-1996.

Provenance

Source

National Aeronautics and Space Administration (NASA) HEASARC, based on the author's compilation and CDS table III/258.

Collection Method

Objects were selected from low-dispersion spectroscopic plates in the First Byurakan Survey, with subsequent cross-correlation to multiple external catalogs and data updates.

Time Range

The original lists of blue stellar objects were published in the journal Astrophysics between 1990 and 1996.

Freshness

The catalog was revised and published by HEASARC in 2008, with a metadata update in 2026.

Geography

Survey region with declinations +33° < delta < +45° and delta > +61°, covering 4000 square degrees.