The luminosities of the M supergiants in M33

Details The luminosities of the M supergiants in M33 The luminosities of the M supergiants in M33

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89.1155h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 89, Aug. 1984, p. 1155-1159.

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36

M Stars, Stellar Luminosity, Supergiant Stars, Astronomical Photometry, Interstellar Extinction, Spiral Galaxies

Scientific paper

JHK photometry of ten spectroscopically confirmed M supergiants in M33 is used to derive their intrinsic colors, the interstellar extinction, and their resulting infrared, visual, and bolometric luminosities. The visual extinction affecting the M supergiants is highly variable ranging from 0.3 to 1.4 mag.The visual luminosity of the three brightest red supergiants is -8.1 mag, in agreement with their luminosities in other nearby spiral and irregular galaxies. The most luminous M supergiant in M33 has a bolometric luminosity of -9.2 mag, also in accord with the observed upper luminosity boundary for late-type supergiants.

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