H Persei Chandra X-Ray Point Source Catalog with 330 Detected Sources

A catalog of 330 X-ray point sources detected by the Chandra Observatory in the h Persei star cluster. The data, from a 41.1 ks observation on 2004 December 2, includes ~165 X-ray bright stars and correlates X-ray luminosity with optical properties. This table was created by NASA HEASARC in March 2009 based on published research.

Use Cases

• Modeling the decline of X-ray emission in stars more massive than the Sun based on the correlation between fractional X-ray luminosity and spectral type.
• Estimating the maximum X-ray flux incident on forming terrestrial planets based on the subset of stars with IRAC 8-micron excess.
• Comparing stellar X-ray activity across different aged clusters using the distribution of Lx/Lstar versus spectral type and (V-I) color.
• Analyzing the population of X-ray active stars in the 13-14 Myr-old h Persei cluster to trace the bright edge of a larger stellar population.

Strengths

• Contains 330 Chandra-detected X-ray sources with associated optical/IR photometry and spectroscopy.
• Based on a 41.1 ks Chandra/ACIS-I observation, providing high-resolution X-ray data.
• Includes ~165 X-ray bright stars with identified optical counterparts (V <= 23).
• Correlates X-ray luminosity with stellar parameters like spectral type and optical color.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data were not registered to an astrometric reference frame (e.g., 2MASS).

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Chandra/ACIS-I observation (Obs. ID 5407) with data processed and catalog created from published research tables.

Time Range

Observation date: 2004 December 2.

Freshness

Last updated 2026-03-13 19:42:38.365301; freshness should be verified.

Geography

Centered on RA(2000) = 2h19m00s, Dec(2000) = 57d07'12", covering a 17' x 17' area in the h Persei star cluster.