TESS-HERMES

The TESS-HERMES project is a spectroscopic survey using the HERMES multi-object instrument on the Anglo-Australian Telescope (AAT). So far, the survey has observed ~16,000 dwarf and subgiant stars in the southern TESS Continuous Viewing Zone (CVZ). Targets in the CVZ have overlap with every TESS sector, and thus will get a full 12 months of data. It also overlaps with the JWST CVZ, making these targets optimal for follow-up with that telescope. The TESS-HERMES project derives stellar properties (effective temperature, surface gravity, [Fe/H], v*sin(i), microturbulence, distance, extinction, mass, radius, ages) using a Bayesian approach, spectral analysis, and theoretical isochrones. This catalog of stellar parameters is available now, while the calibrated spectra are planned for a future release at MAST.

搜集汇总

背景与挑战

背景概述

TESS-HERMES是一个光谱巡天项目，利用AAT/HERMES仪器观测了约16000颗位于南天TESS连续观测区的矮星和亚巨星，提供了恒星参数（如有效温度、表面重力、金属丰度等）的目录，校准光谱将在未来发布。