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A Two-level Radial-velocity Zero-point Calibration for LAMOST MRS with Gaia and APOGEE and a Value-added RV Catalog

  • Authors: Jinming Zhang, Haibo Yuan

Jinming Zhang and Haibo Yuan 2026 The Astrophysical Journal Supplement Series 286 .

  • Provider: AAS Journals

Caption: Figure 1.

Flowchart of the two-level RVZP correction for LAMOST MRS. We compare LAMOST MRS RVs with Gaia-corrected and APOGEE DR17 RVs to derive (1) a spectrograph–exposure correction in (lmjm, planid, spid) units and (2) a fiber–time correction inferred from the good sample after applying the first-level correction.

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