NGC 1371 - (R')SAB(rs)a

NGC 1371

De Vaucouleurs Atlas Type: (R')SAB(rs)a

Filter: B

Telescope: CTIO 0.9-m
North up , East left
Field Dimensions: 7.0 x 6.4 arcminutes

RC3 Type: SAB(rs)a
RSA Type: Sa(s)
Surface Brightness Range Displayed: 17.9-26.0 mag per square arcsec
Absolute Blue Magnitude: -19.8
Elmegreen Spiral Arm Class: AC 4

De Vaucouleurs Atlas Description:

The inner structure is very smooth and includes a weak bar. The feature does not maintain constant m = 2 and 4 Fourier phases over its extent, thus it is not a ``Fourier bar " but is more spiral-like (Laurikainen et al. 2004b). The inner pseudoring is ill-defined and appears made of two very diffuse spiral arms. The faint outer arms are complex and form an angularly-large, miscentered outer pseudoring . These arms are lightly patchy and clearly are where much of the current star formation is taking place, although an H-alpha image (Hameed and Devereux 1999) shows a partial nuclear ring of HII regions as well. The outer arms also show weak evidence for counterwinding components, in that the two most obvious arms forming the outer pseudoring appear to open in opposite senses.