Orion Nebula YSO IR Properties: 398 Young Stellar Objects with JHK and IRAC Data

398 young stellar objects (YSOs) in the Orion Nebula Cluster are cataloged with JHK and IRAC infrared photometry and protostar classifications. The data was assembled from observations by the HST Treasury Program, WFI at ESO 2.2m, ISPI at CTIO 4m, and Spitzer IRAC. This online catalog was created by NASA HEASARC in October 2010 based on tables from the reference paper.

Use Cases

• Classify protostar evolutionary stages based on infrared emission properties.
• Compare X-ray luminosity across different stellar evolutionary classes (Class 0-I, II, III).
• Study the interaction between circumstellar material and central objects using multi-wavelength photometry.
• Train models to identify high-probability candidate Class 0-I protostars from photometric catalogs.

Strengths

• Data for 398 objects provides a sample for statistical analysis.
• Photometric catalog spans from UV to 8 microns, offering multi-wavelength coverage.
• Includes classifications for 'bona fide' Class II stars and Class III stars with normal photospheric emission.

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 specific telescopes and programs used.

Provenance

Source

NASA HEASARC, based on tables from the reference paper obtained from the CDS.

Collection Method

Assembled from HST Treasury Program data, deep UBVI and JHK images from WFI and ISPI telescopes, and Spitzer IRAC imaging.

Freshness

Last updated 2026-03-13 19:47:12.040396; freshness should be verified.

Geography

Orion Nebula Cluster region.