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Table 1

Stellar and extinction properties derived from quantitative spectroscopy and optical () SED fitting.

Name Sp. type Teff K log ɡ cm s−2 AV log L/L R R M (a) M AgeHRD Myr
B163(b) kA5 8200 6 0.14
B243 B8 V 6 0.20
B268 B9-A0 6 0.20
B275 B7 III 8 0.04
B331(b) late-B 13 000 12 0.02

Notes. Data from Tables 2, 3, and 5 in Ramírez-Tannus et al. (2017). The adopted distance for M17 is 1.98 kpc. (a)ZAMS mass of best fit PMS track. (b)B163 and B331 were too embedded to allow for full modeling. Physical parameters were estimated by spectroscopic classification and estimating Teff and L from Kurucz calibration tables.

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