scholarly journals The Spitzer Survey of the Large Magellanic Cloud: SAGE, A Review of Initial Results

2008 ◽  
Vol 25 (3) ◽  
pp. 149-153 ◽  
Author(s):  
M. Meixner
Keyword(s):  
Interstellar Medium ◽  
Mass Loss ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
Evolved Stars ◽  
Initial Results ◽  
Ism Dust ◽  
Sage Data

AbstractWe have performed a uniform and unbiased imaging survey of the Large Magellanic Cloud, using the IRAC and MIPS instruments on board the Spitzer Space Telescope. This Spitzer survey of the Large Magellanic Cloud is surveying the agents of a galaxy's evolution (SAGE), the interstellar medium and stars. The SAGE data are nonproprietary and the team has been creating catalogs and improved images for use by the astronomical community. This paper highlights some of the initial results being published by the SAGE team covering the topics of evolved stars and their mass-loss return to the ISM, young stellar objects and the properties of the ISM dust.

scholarly journals VARIABLE EVOLVED STARS AND YOUNG STELLAR OBJECTS DISCOVERED IN THE LARGE MAGELLANIC CLOUD USING THESAGESURVEY

2009 ◽  
Vol 137 (2) ◽  
pp. 3139-3148 ◽  
Author(s):  
Uma P. Vijh ◽  
M. Meixner ◽  
B. Babler ◽  
M. Block ◽  
S. Bracker ◽  
...  
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
Evolved Stars

scholarly journals The mass-loss return from evolved stars to the Large Magellanic Cloud

2011 ◽  
Vol 532 ◽  
pp. A54 ◽  
Author(s):  
S. Srinivasan ◽  
B. A. Sargent ◽  
M. Meixner
Keyword(s):  
Mass Loss ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Evolved Stars

scholarly journals AKARI Near-Infrared Spectroscopy: Detection of H 2 O and CO 2 Ices toward Young Stellar Objects in the Large Magellanic Cloud

2008 ◽  
Vol 686 (2) ◽  
pp. L99-L102 ◽  
Author(s):  
Takashi Shimonishi ◽  
Takashi Onaka ◽  
Daisuke Kato ◽  
Itsuki Sakon ◽  
Yoshifusa Ita ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Young Stellar Objects ◽  
Stellar Objects

THE MASS LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD: EMPIRICAL RELATIONS FOR EXCESS EMISSION AT 8 AND 24 μm

2009 ◽  
Vol 137 (6) ◽  
pp. 4810-4823 ◽  
Author(s):  
Sundar Srinivasan ◽  
Margaret Meixner ◽  
Claus Leitherer ◽  
Uma Vijh ◽  
Kevin Volk ◽  
...  
Keyword(s):  
Mass Loss ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Evolved Stars ◽  
Excess Emission ◽  
Empirical Relations

Young Stellar Objects in the Large Magellanic Cloud: N63 and N180 HiiRegions

2008 ◽  
Vol 678 (1) ◽  
pp. 200-218 ◽  
Author(s):  
Adeline Caulet ◽  
R. A. Gruendl ◽  
Y.‐H. Chu
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Young Stellar Objects ◽  
Stellar Objects

scholarly journals AKARI near-infrared spectroscopy: Detection of H2O and CO2 ices toward young stellar objects in the Large Magellanic Cloud

2008 ◽  
Vol 4 (S256) ◽  
pp. 233-238
Author(s):  
Takashi Shimonishi ◽  
Takashi Onaka ◽  
Daisuke Kato ◽  
Itsuki Sakon ◽  
Yoshifusa Ita ◽  
...  
Keyword(s):  
Radiation Field ◽  
Near Infrared ◽  
Infrared Camera ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
Chemical Balance ◽  
Circumstellar Material ◽  
Growth Method

AbstractWe present the first results of the AKARI Infrared Camera near-infrared spectroscopic survey of the Large Magellanic Cloud (LMC). The circumstellar material of young stellar objects (YSOs) are affected by galactic environments such as a metallicity or radiation field. Ices control the chemical balance of circumstellar environments of embedded YSOs. We detected absorption features of the H2O ice 3.05 μm and the CO2 ice 4.27 μm stretching mode toward seven massive YSOs in the LMC. This is the first detection of the 4.27 μm CO2 ice feature toward extragalactic YSOs. The present samples are for the first time spectroscopically confirmed to be YSOs. We used a curve-of-growth method to evaluate the column densities of the ices and derived the CO2/H2O ratio to be 0.45±0.17. This is clearly higher than that seen in Galactic massive YSOs (0.17±0.03). We suggest that the strong ultraviolet radiation field and/or the high dust temperature in the LMC may be responsible for the observed high CO2 ice abundance.

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