Measure DIB6614 with MCMC-RVSD on LAMOST MRS

Geographically, the observations correspond to the sky footprint covered by the LAMOST survey, spanning diverse observation epochs.The primary tabular data contains a total of 434 entries. Each row corresponds to a unique target cross-matched between LAMOST and Gaia, identified by its designated uid and Gaia DR3 source_id. The column headers thoroughly document the measurements: the parameters encompass the MCMC best-fits (central wavelength, depth, and Gaussian width sigma) and template-matching equivalents for both the DIB and the proximate stellar lines.

Furthermore, the catalog presents fundamental stellar atmospheric parameters (Teff, log g, [Fe/H]) generated by the LAMOST Stellar Parameter Pipeline (LASP), alongside multi-epoch radial velocities (RVs) and corresponding signal-to-noise ratios (S/N). Physical quantities are clearly expressed using standard astronomical units, where appropriate: wavelengths and line widths are expressed in Angstroms, radial velocities are in km/s, effective temperatures are in Kelvin (K), and surface gravities and metallicities are in dex.Uncertainties and errors are rigorously quantified and reported throughout the dataset.

The measurement errors for the MCMC-derived DIB and stellar parameters reflect the posterior uncertainties rigorously formulated from the MCMC sampling chains. We also report the ranges, mean, and median values of the radial velocity errors to help users trace intrinsic binary motions or instrumental variations. In cases of missing data - such as epochs lacking high-quality spectra, objects without a valid Gaia Non-Single Star (NSS) orbital solution, or failure in pipeline fitting - the corresponding entries are strictly filled with default null values (e.g., NaNs or empty strings) to prevent data misinterpretation and ensure safe ingestion.