NGC 1350 - (R1')SAB(r)ab

NGC 1350

De Vaucouleurs Atlas Type: (R1')SAB(r)ab

Filter: B

Telescope: CTIO 0.9-m
North left , East down
Field Dimensions: 7.5 x 6.4 arcminutes

RC3 Type: (R')SB(r)ab
RSA Type: Sa(r)
Surface Brightness Range Displayed: 17.5-26.0 mag per square arcsec
Absolute Blue Magnitude: -20.2

De Vaucouleurs Atlas Description:

This large, intriguing object is a member of the Fornax Cluster and its morphology is dominated by strong inner and outer rings. However, only a weak bar is detectable in blue light inside the inner ring , which is the reason for the SAB classification. The bar is much more obvious in an OSUBGS H-band image, where it shows bright ansae .

The inner ring is connected to spiral structure but is mostly closed, hence it is very nearly a true ring. It is lightly patchy and divided in places by dust lanes. Inside the ring there is considerable dust, but it is not organized well and its appearance is due mainly to tilt. There is no nuclear ring. Outside the inner ring is a strong outer pseudoring whose basic morphology is that of OLR subclass type (R1' ). However, NGC 1350 shows traces of ``plumes " like those in NGC 1433 , and these features blend with the outer arms, complicating the interpretation. The general light patchiness of the inner ring and outer arms, the weak plumes , and the complex dust pattern, are the basis for the Sab classification.