The 2MASS near-infrared galaxy morphology sequence "trident," analogous to the Hubble sequence "tuning fork." The images were created by combining the J, H and Ks image data with an RGB color scale: J is assigned blue intensity levels, H green and Ks red intensity levels. Also shown are J-band contours, corresponding to the 10%, 20%, 30%, ..., etc, of the J-band peak flux. The integrated brightness ranges between 10.0 and 11.0 mag at 2.2 Ám (30 to 70 mJy, respectively), and angular sizes range from 50 to 100┤┤. The 2MASS beam size, in comparison, is ~3┤┤.


[Last Updated: 2004 Jan 30; by Tom Jarrett]