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Near-IR Imaging of Star-forming Regions with IRAF

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Astronomical Data Analysis Software and Systems VI
ASP Conference Series, Vol. 125, 1997
Editors: Gareth Hunt and H. E. Payne

Near-IR Imaging of Star-forming Regions with IRAF

S. J. Chan and A. Mampaso
Instituto de Astrofísica de Canarias, C/Via Láctea s/n, E-38200 La Laguna, Tenerife, Spain

 

Abstract:

We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.'' Several tasks are being developed under the IRAF environment for efficiently reducing and analyzing the near-infrared data obtained from the Teide observatory with the IAC infrared camera (IAC-IRCAM).

         

1. Introduction

Several galactic HII regions associated with small molecular clouds were observed with the IR-Camera on the 1.5m CST (Carlos Sánchez Telescope) of the Teide Observatory in October 1996. These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. Studies of the embedded clusters also allow us to derive the luminosity function and thus, using an appropriate mass-luminosity relation, to determine the stellar mass spectrum. The near-IR imaging study will allow us to search systematically for exciting sources and the low-mass stars associated with the nebulæ.

Some data were obtained during the test run of the IAC-IRCAM on February 1996. We are using these data to test our new IRCAM package, developed under the IRAF environment.

2. IRCAM Package

2.1. IAC-IRCAM

The IAC-IRCAM is based on a 256×256 NICMOS 3 array and has a plate scale of 0.4´´/pixel. Currently, the camera contains seven filters covering the wavelength range from 1.2µm to 2.32µm. The 3 60s limiting magnitudes for point sources were 18.8mag at J, 18.5mag at H, and 16mag at K.

2.2. Preliminary Tasks in the IRCAM package

At the time of writing this paper, eighteen preliminary tasks have been written. A common characteristic of these tasks is ease in handling the bookkeeping of data reduction/analysis history. The tasks are as follows:

2.3. Future Development of IRCAM

Future tasks include:

Acknowledgments:

S. J. Chan thanks the Program Organizing Committee for the Sixth Annual Astronomical Data Analysis Software and System Conference for offering her full financial support to attend the Conference.


© Copyright 1997 Astronomical Society of the Pacific, 390 Ashton Avenue, San Francisco, California 94112, USA

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