820 Solar-Type Stars with Rotation Periods and X-Ray Luminosities

820 solar and late-type stars from nearby open clusters and the field have photometric parameters, rotation periods, and X-ray luminosities. The sample was used to study the rotation-activity relationship, revealing a power law slope of -2.70 in the unsaturated regime, inconsistent with the canonical -2 slope. NASA HEASARC created this catalog in March 2012 based on CDS data, removing 4 near-duplicate entries.

Use Cases

• Modeling the relationship between stellar rotation and X-ray luminosity based on the derived power law slope.
• Studying stellar dynamo theory and differential rotation using the sample's rotation periods and activity indicators.
• Identifying regimes of coronal emission (saturated, super-saturated, unsaturated) using empirical thresholds.
• Analyzing the behavior of late F-type stars which bypass the saturated emission regime.

Strengths

• Contains a curated sample of 820 stars with duplicate entries removed.
• Includes derived stellar parameters used in a published astrophysical study.
• Data supports a specific, statistically significant finding (5 sigma confidence on power law slope).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown beyond the initial 820, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/ApJ/743/48.

Collection Method

Compiled from photometric and derived parameters for a sample of stars.

Freshness

Last updated 2026-03-13 17:00:17.815530; freshness should be verified.