Spitzer SAGE Infrared Photometry of Massive Stars in the Large Magellanic Cloud A. Z. Bonanos1,2, D.L. Massa2, M. Sewilo2, D. J. Lennon2, N. Panagia2,3, L. J. Smith2, M. Meixner2, B. L. Babler4, S. Bracker4, M. R. Meade4, K.D. Gordon2, J.L. Hora5, R. Indebetouw6, B. A. Whitney7 ABSTRACT We present a catalog of 1750 massive stars in the Large Magellanic Cloud, with accurate spectral types compiled from the literature, and a photometric cat- alog for a subset of 1268 of these stars, with the goal of exploring their infrared properties. The photometric catalog consists of stars with infrared counterparts in the Spitzer SAGE survey database, for which we present uniform photometry from 0.3 − 24 µm in the UBVIJHKs+IRAC+MIPS24 bands. The resulting infrared color–magnitude diagrams illustrate that the supergiant B[e], red super- giant and luminous blue variable (LBV) stars are among the brightest infrared point sources in the Large Magellanic Cloud, due to their intrinsic brightness, and at longer wavelengths, due to dust. We detect infrared excesses due to free– free emission among ∼ 900 OB stars, which correlate with luminosity class. We confirm the presence of dust around 10 supergiant B[e] stars, finding the shape of their spectral energy distributions (SEDs) to be very similar, in contrast to 1Giacconi Fellow. 2Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA; bonanos, massa, sewilo, lennon, panagia, lsmith, meixner,
[email protected] 3INAF/Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123 Catania, Italy; and Supernova Ltd., arXiv:0905.1328v3 [astro-ph.SR] 11 Aug 2009 VGV #131, Northsound Road, Virgin Gorda, British Virgin Islands.