0 Assigned ID: 807 ----- Attempting Submission 1 (Fri Apr 11 20:56:19 GMT 2014) ----- HST Phase I Proposal 807 (phase1-AR_barman.apt) successfully submitted. ----- Attempting Submission 2 (Fri Apr 11 21:00:27 GMT 2014) ----- The possibility of finding habitable planets around M dwarfs has refueled interest in the astrophysical properties of these stars. The extreme ultraviolet (EUV) is a key portion of the spectrum for assessing habitability, yet this wavelength range is out of reach for all current telescopes and instruments. Observations at longer wavelengths (from Lyman-alpha and into the near-UV) are available from previously approved HST programs and these data (in addition to data from GALEX and elsewhere) can be used to calibrate M dwarf upper-atmosphere models (of the chromosphere, transition region and corona) to yield semi-empirical models capable of predicting the EUV. The synthetic M dwarf spectra that extend into the EUV are extremely valuable for studies of planetary atmosphere and the habitable zone. This modest program will provide physically and observationally motivated synthetic spectra for M dwarfs for a broad range of masses, ages and activity states. COOL STARS Default Medium false false false false true SUPPORTED