Isochrone Mapping has been used since the late 19th century as a planning and visualization tool in various domains, such transport hydrology. In past, isochrone calculation was based mainly on static properties therefore also yielded maps. This resulted potentially significant — at same time unquantifiable degree of uncertainty. Today however, advances both information technology availabilit...

Abstract We present a spectroscopic analysis of sample 48 M-dwarf stars (0.2 M ⊙ < 0.6 ) from the Hyades open cluster using high-resolution H -band spectra Sloan Digital Sky Survey/Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey. Our methodology adopts spectrum synthesis with LTE MARCS model atmospheres, along APOGEE Data Release 17 line list, to determine effective te...