All-Sky Catalog of Faint EUV Sources: 534 Objects from EUVE and ROSAT

NASA HEASARC provides a catalog of 534 faint objects detected jointly in the Extreme Ultraviolet Explorer (EUVE) and ROSAT X-ray Telescope all-sky surveys. The joint detection method used a low count rate threshold, revealing 166 new EUV sources not in previous catalogs, with preliminary identifications for 105 of these new sources. This browse table was created in July 2003 based on data from the CDS.

Use Cases

• Identify and study faint late-type (F-M) stars based on the 81 preliminary identifications mentioned.
• Analyze the horizon effect of interstellar absorption on source detection based on the description's discussion.
• Cross-match EUV and X-ray source catalogs based on the joint selection criterion within a 1.5 arcminute tolerance.
• Investigate the population of new EUV sources (166 objects) not found in previous major catalogs.

Strengths

• Contains 534 jointly detected objects from two major space-based surveys (EUVE and ROSAT).
• Includes 166 new EUV sources not listed in previous EUVE or ROSAT Wide Field Camera catalogs.
• Provides preliminary identifications for 105 of the new sources, with 81 identified as late-type stars.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• The description notes an expectation of about 50 spurious detections due to the positional acceptance criterion.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC).

Collection Method

Objects detected jointly in the EUVE (100 Angstrom band) and ROSAT XRT (0.25 keV band) All-Sky Surveys.

Time Range

Based on survey data; catalog created in July 2003.

Freshness

Last updated 2026-03-13 20:03:39.525416; freshness should be verified.

Geography

All-sky coverage.