Cold dust in three massive evolved stars in the LMC

Authors

M. L. Boyer, Space Telescope Science Institute
B. Sargent, Space Telescope Science Institute
J. Th Van Loon, Keele University
S. Srinivasan, CNRS Centre National de la Recherche Scientifique
G. C. Clayton, Louisiana State University
F. Kemper, The University of Manchester
L. J. Smith, Space Telescope Science Institute
M. Matsuura, University College London
Paul M. Woods, The University of Manchester
M. Marengo, Iowa State University
M. Meixner, Space Telescope Science Institute
C. Engelbracht, The University of Arizona
K. D. Gordon, Space Telescope Science Institute
S. Hony, Astrophysique, Instrumentation et Modélisation de Paris-Saclay
R. Indebetouw, University of Virginia
K. Misselt, The University of Arizona
K. Okumura, Astrophysique, Instrumentation et Modélisation de Paris-Saclay
P. Panuzzo, Astrophysique, Instrumentation et Modélisation de Paris-Saclay
D. Riebel, Johns Hopkins University
J. Roman-Duval, Space Telescope Science Institute
M. Sauvage, Astrophysique, Instrumentation et Modélisation de Paris-Saclay
G. C. Sloan, Cornell University

Document Type

Article

Publication Date

10-15-2010

Abstract

Massive evolved stars can produce large amounts of dust, and far-infrared (IR) data are essential for determining the contribution of cold dust to the total dust mass. Using Herschel, we search for cold dust in three very dusty massive evolved stars in the Large Magellanic Cloud: R71 is a luminous blue variable, HD 36402 is a Wolf-Rayet triple system, and IRAS05280-6910 is a red supergiant. We model the spectral energy distributions using radiative transfer codes and find that these three stars have mass-loss rates up to 10-3 Modot; yr-1, suggesting that high-mass stars are important contributors to the life-cycle of dust. We found far-IR excesses in two objects, but these excesses appear to be associated with ISM and star-forming regions. Cold dust (T < 100 K) may thus not be an important contributor to the dust masses of evolved stars. © ESO 2010.

Publication Source (Journal or Book title)

Astronomy and Astrophysics

Recommended Citation

Boyer, M., Sargent, B., Van Loon, J., Srinivasan, S., Clayton, G., Kemper, F., Smith, L., Matsuura, M., Woods, P., Marengo, M., Meixner, M., Engelbracht, C., Gordon, K., Hony, S., Indebetouw, R., Misselt, K., Okumura, K., Panuzzo, P., Riebel, D., Roman-Duval, J., Sauvage, M., & Sloan, G. (2010). Cold dust in three massive evolved stars in the LMC. Astronomy and Astrophysics, 518 (4) https://doi.org/10.1051/0004-6361/201014513