Infrared observations of recent star formation regions in the Large Magellanic Cloud - N 160 A and N 105 A

Astronomy and Astrophysics – Astronomy

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Infrared Astronomy, Magellanic Clouds, Pre-Main Sequence Stars, Star Formation, Water Masers, Carbon Dioxide, Infrared Astronomy, Protostars

Scientific paper

The authors report on the detection of 2 new probable protostellar objects in the Large Magellanic Cloud associated with the radio optical nebulae N 160 A and N 105 A. Both sources were found near H2O masers. 1.25 - 20 μm photometric data were obtained on N 160 A IR. It is suggested that the infrared emission is due to the combination of an extended free-free component seen at short wavelengths and in the Brackett γ line and a compact source which consists of a hot (450K) core and a dense optically thick cold envelope (65K). This object is shown to be very similar to galactic protostellar objects like W 51-IRS 2. The near infrared data obtained on N 105 A are consistent with a similar interpretation.

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