SIMBAD references

2008ApJ...686L..99S - Astrophys. J., 686, L99-L102 (2008/October-3)

AKARI near-infrared spectroscopy: detection of H₂ O and CO₂Ices toward young stellar objects in the Large Magellanic Cloud.

SHIMONISHI T., ONAKA T., KATO D., SAKON I., ITA Y., KAWAMURA A. and KANEDA H.

Abstract (from CDS):

We present the first results of AKARI Infrared Camera near-infrared spectroscopic survey of the Large Magellanic Cloud (LMC). We detected absorption features of the H₂ O ice 3.05 µm and the CO₂ice 4.27 µm stretching mode toward seven massive young stellar objects (YSOs). These 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.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - ISM: Dust, Extinction - ISM: Abundances - ISM: Molecules - Galaxies: Magellanic Clouds - Stars: Pre-Main-Sequence

Nomenclature: Table 1: [SOK2008] STN (Nos ST1-ST7).

Simbad objects: 7

Full paper

View the references in ADS

To bookmark this query, right click on this link: simbad:2008ApJ...686L..99S and select 'bookmark this link' or equivalent in the popup menu