The SAGE-Spec Spitzer Legacy Program: The Life Cycle of Dust and Gas in the Large Magellanic Cloud
By P. Woods, Joana M. Oliveira, F. Kemper, J. V. Loon, B. Sargent, M. Matsuura, R. Szczerba, K. Volk, A. Zijlstra, G. Sloan and 48 more. 2010
156 citations recorded by the source corpus.
The SAGE-Spec Spitzer Legacy program is a spectroscopic follow-up to the SAGE-LMC photometric survey of the Large Magellanic Cloud carried out with the Spitzer Space Telescope. We present an overview of SAGE-Spec and some of its first results. The SAGE-Spec program aims to study the life cycle of gas and dust in the Large Magellanic Cloud and to provide information essential to the classification of the point sources observed in the earlier SAGE-LMC photometric survey. We acquired 224.6 h of observations using the infrared spectrograph and the spectral energy distribution (SED) mode of the Multiband Imaging Photometer for Spitzer. The SAGE-Spec data, along with archival Spitzer spectroscopy of objects in the Large Magellanic Cloud, are reduced and delivered to the community. We discuss the observing strategy, the specific data-reduction pipelines applied, and the dissemination of data products to the scientific community. Initial science results include the first detection of an extragalactic 21 μm feature toward an evolved star and elucidation of the nature of disks around RV Tauri stars in the Large Magellanic Cloud. Toward some young stars, ice features are observed in absorption. We also serendipitously observed a background quasar, at a redshift of z ≈ 0.14, which appears to be hostless.
Subfields: Astronomy and Astrophysics, Instrumentation
View Paper: https://www.semanticscholar.org/paper/e0f2dbd8f5b18d269de13c2df037555d9120c4fb
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Citations in the corpus
- SURVEYING THE AGENTS OF GALAXY EVOLUTION IN THE TIDALLY STRIPPED, LOW METALLICITY SMALL MAGELLANIC CLOUD (SAGE-SMC). II. COOL EVOLVED STARS (2011, background): “For examples of typical mid-IR spectra of LMC stars that show the features described above, see Woods et al. (2011).”
- Non-standard grain properties, dark gas reservoir, and extended submillimeter excess, probed by Herschel in the Large Magellanic Cloud (2011, background): “Some compact sources show signs of absorption in the mid-IR (9.8 and 18 µm silicate features, 15.2 µm CO2 ice feature, etc.; Kemper et al., 2010; Hony et al., 2011), but the bulk of the grain emission, at longer wavelengths is unaffected.”
- Fundamental parameters and infrared excesses of Hipparcos stars (2012, methodology): “The SEDs were fitted using the code initially described in McDonald et al. (2009) and modified in the subsequent papers (Boyer et al. 2009a; McDonald et al. 2010a,b, 2011b,d; McDonald, Johnson & Zijlstra 2011c; Woods et al. 2011).”