Temporal Changes in the Infrared Spectra of Magellanic Carbon Stars
- Author(s)
- G. C. Sloan, K. E. Kraemer, B. Aringer, J. Cami, K. Eriksson, S. Höfner, E. Lagadec, M. Matsuura, I. McDonald, E. Montiel, R. Sahai, A. A. Zijlstra
- Abstract
The Medium-Resolution Spectrometer on the Mid-Infrared Instrument on the JWST obtained spectra of three carbon stars in the Large Magellanic Cloud. Two of the spectra differ significantly from spectra obtained ∼16–19 years earlier with the Infrared Spectrograph on the Spitzer Space Telescope. The one semi-regular variable among the three has changed little. The long-period Mira variable in the sample shows changes consistent with its pulsation cycle. The short-period Mira shows dramatic changes in the strength of its molecular absorption bands, with some bands growing weaker and some stronger. Whether these variations result from its pulsation cycle or its evolution is not clear.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Space Telescope Science Institute, University of North Carolina at Chapel Hill, Boston College, University of Western Ontario, Uppsala University, Université Côte d'Azur, Cardiff University, University of Manchester, NASA Ames Research Center, California Institute of Technology (Caltech)
- Journal
- Galaxies
- Volume
- 12
- No. of pages
- 8
- ISSN
- 2075-4434
- DOI
- https://doi.org/10.3390/galaxies12050061
- Publication date
- 10-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Keywords
- ASJC Scopus subject areas
- Astronomy and Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/45ae9cb6-0c25-43f4-80de-eddecd5c7c08