NGC 2681 - (R)SAB(rs)0/a

NGC 2681

De Vaucouleurs Atlas Type: (R)SAB(rs)0/a

Filter: B

Telescope: NOT 2.5-m
North up , East left
Field Dimensions: 4.0 x 3.0 arcminutes

RC3 Type: (R')SAB(rs)0/a
RSA Type: Sa
Surface Brightness Range Displayed: 15.0-26.5 mag per square arcsec
Absolute Blue Magnitude: -20.3

De Vaucouleurs Atlas Description:

The difference between the VRHS type and the SB94 type is remarkable. Except for the inner ring , the features of this galaxy are subtle. The central area includes only the slightest trace of a bar, in the form of a dust-riddled oval. We use the underline notation to highlight its weakness. Surrounding the weak oval is a very well-defined inner pseudoring made of two tightly-wrapped spiral arms. Outside this ring, a very broad oval is found. Two very faint spiral arms break from this oval and appear to wind into a well-defined outer ring . The B-V color index map shows that most of the recent star formation and the dust are confined to the inner pseudoring and inner oval regions. The inner pseudoring is a zone of enhanced blue colors. Erwin and Sparke (2003) show that NGC 2681 has a small bar in its central 3 arcseconds, which makes the galaxy a very rare triple-barred system.