This is the 12 µm IRAS image
You may also see images at other wavelengths by clicking on the colorbar at a point above any of the dashed arrows (which point to other regions of the spectrum at which images are available). The solid arrow shows the spectral region you are seeing now. This is not intended to be a linear scale in wavelength, but only a rough guide to the wavelength of the observation.
This heavily embedded cluster in the L1641 North region is the location of a powerful molecular outflow (Fukui et al. 1986). The existence of the group was discovered by Strom, Margulis and Strom (1989). It was further studied photometrically by Chen et al. (1993). An infrared spectroscopic study was done by Hodapp & Deane (1993). This group is extremely young as shown by the luminosity function (Strom, Strom & Merrill (1993) and the HR diagram (Allen, Strom & Strom (in preparation). Many of the stars in this cluster suffer enormous extinctions (>30 magnitudes in the visible). Few are seen at visible wavelengths.
In this mid infrared image you are beginning to see radiation from the embedded cluster (other than by scattered light). However the spatial resolution is much worse than for the shorter wavelength images. At 60 µm, the resolution is a factor of 2 worse yet, but you are directly receiving radiation from the cluster and the source (or sources) driving the powerful molecular outflow.
If you wish more information about these images, a page is available for your perusal. You may also return to the overview page.
Chen, H., Tokunaga, A.T., Strom, K.M. & Hodapp, K.-W. 1993, ApJ, 407, 639
Fukui,Y. et al. 1986, ApJ Letters, 311, L85
Hodapp, K.-W. & Deane, J. 1993, ApJ Suppl,
Strom, K.M., Margulis, M. & Strom, S.E. 1989, ApJ Letters, 346, L33
Strom, K.M., Strom, S.E. & Merrill, K.M. 1993, ApJ, 412, 233