ROSAT All-Sky Survey: 77 Soft High-Latitude X-Ray Sources with Identifications

NASA HEASARC provides a catalog of spectroscopic identifications for 77 bright, soft X-ray sources from the ROSAT All-Sky Survey. The table contains identifications for 70 sources, with 5 identified by other means, and presents subsidiary information for 2 unidentified sources. The largest source classes are Seyfert 1 galaxies, magnetic cataclysmic variables, and hot white dwarfs.

Use Cases

• Classifying X-ray source populations based on hardness ratio and count rate criteria mentioned in the description.
• Analyzing the distribution of Seyfert galaxies versus galactic objects across different galactic latitudes.
• Training models for astronomical object identification using cataloged spectroscopic data.
• Studying the properties of magnetic cataclysmic variables and hot white dwarfs detected in soft X-rays.

Strengths

• Provides spectroscopic identifications for 70 of 77 sources in the sample.
• Supplements a previously published identification program for brighter sources, creating a more complete sample.
• Created by the authoritative NASA HEASARC based on a CDS catalog.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect observational bias inherent to the ROSAT survey's sensitivity and sky coverage.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/A+A/347/47.

Collection Method

Spectroscopic identifications from the ROSAT All-Sky Survey.

Time Range

null

Freshness

Last updated 2026-03-13 17:41:59.645057; freshness should be verified.

Geography

All-sky, with focus on high galactic latitudes (|b| > 40 degrees).