C2D Candidate YSO CORES Catalog: Candidate Young Stellar Objects in 82 Cloud Cores

The Cores to Disks (C2D) Spitzer Legacy Program used three instruments to observe sources spanning the evolutionary sequence from molecular cores to protoplanetary disks. This catalog lists candidate young stellar objects (YSOs) in 82 small cloud cores, derived from the Full Catalog using methodology from Harvey et al. (2007b). The program surveyed five of the nearest large molecular clouds for objects as faint as 0.001 solar luminosities.

Use Cases

• Classifying young stellar object candidates based on infrared photometry from the Spitzer instruments.
• Analyzing the distribution of protostars across different cloud masses and star-forming environments mentioned in the description.
• Studying the early stages of planetary system formation for objects with ages up to about 10 million years.
• Cross-matching candidate YSOs with other astronomical surveys using the catalog's derived methodology.

Strengths

• Data originates from the Spitzer Legacy Program, which used all three Spitzer instruments (IRAC, MIPS, IRS).
• Targets about 150 known compact cores and surveyed five of the nearest large molecular clouds.
• Probes objects as faint as 0.001 solar luminosities, suggesting sensitivity to low-mass objects.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Spitzer Space Telescope's IRAC, MIPS, and IRS instruments, with catalog derivation methodology described in Harvey et al. (2007b).

Time Range

Observations likely span the operational period of the Spitzer Space Telescope.

Freshness

Last updated 2026-03 13 17:59:50.702130; freshness should be verified.

Geography

Observations cover five of the nearest large molecular clouds and 82 small cloud cores.