IGRINS Synthetic Grid: 16,875 Stellar Spectra Models

A synthetic grid of 16,875 stellar spectra models created by Ricardo López–Valdivia of The University of Texas at Austin. The models cover a parameter space of effective temperature (3000–5000 K), surface gravity (3.0–5.0 dex), magnetic field strength (0.0–4.0 kG), and rotational velocity (2.0–50 km/s). The data is stored as NumPy arrays and a CSV file, with an example provided for loading and plotting in Python.

Use Cases

• Training or validating stellar parameter estimation models based on synthetic spectra.
• Testing spectral synthesis codes against a defined grid of physical parameters.
• Analyzing the effects of magnetic field strength and rotation on synthetic stellar spectra.

Strengths

• Contains 16,875 distinct synthetic stellar spectra models.
• Covers a defined four-dimensional parameter space with specified step sizes for temperature, gravity, magnetic field, and rotation.
• Includes example Python code for data loading and visualization, suggesting practical usability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Ricardo López–Valdivia, The University of Texas at Austin

Collection Method

Synthetic spectra generation, likely from stellar atmosphere models.