A Near-Infrared Study of the NS 14 Bipolar Nebula

Details A Near-Infrared Study of the NS 14 Bipolar Nebula A Near-Infrared Study of the NS 14 Bipolar Nebula

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...509..749h&link_type=abstract

The Astrophysical Journal, Volume 509, Issue 2, pp. 749-760.

Astronomy and Astrophysics

Astronomy

1

Ism: Dust, Extinction, Ism: H Ii Regions, Infrared: Stars, Ism: Individual: Alphanumeric: Ns 14, Stars: Formation

Scientific paper

In this fifth paper of a series on high-mass star formation, we continue our study with the bipolar nebula NS 14. We have imaged this nebula at J (1.23 μm), H (1.65 μm), and K (2.23 μm) broadband near-infrared (NIR) wavelengths. We have also obtained 3.29 μm dust feature emission and Brgamma (n = 7 --> 4, 2.166 μm) hydrogen recombination line emission images of this region. The broadband reflection nebulosity, surrounding a central ``Trapezium'' of stars, forms a bipolar structure that is also seen in the 3.29 μm dust feature emission. This dust feature emission exhibits limb brightening; therefore, small dust grains in the central regions of the bipolar structure have been evacuated. The Brgamma line emission consists of a compact component <=2" in size and a more extended component ~5" x 7" or larger in size. A study of the stellar population of the cluster, centered on the nebular emission, has also been made.

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