Infrared observations and star formation in NGC 6357

Details Infrared observations and star formation in NGC 6357 Infrared observations and star formation in NGC 6357

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...170...97p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 170, no. 1, Dec. 1986, p. 97-106.

Astronomy and Astrophysics

Astronomy

10

Infrared Photometry, Infrared Sources (Astronomy), Near Infrared Radiation, Star Formation, Astronomical Maps, Color-Color Diagram, H Ii Regions, Infrared Astronomy, Stellar Winds, Water Masers

Scientific paper

The authors have searched for near-infrared emission from selected areas in the H II region NGC 6357. Six fields, centred on previously reported far-infrared peaks, on a 6 cm radio continuum peak and on a water maser, were investigated. The detected sources were analyzed by means of colour-colour diagrams in order to discriminate between possible young objects and field stars and their characteristics are discussed. It is found that the near-infrared sources associated with NGC 6357 are less massive than the visible stars which are responsible for the excitation of the visible H II region and that they are deeply embedded in a molecular cloud. The possible interaction of the winds from the visible O-type stars and the molecular material is discussed.

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