How Different are Normal and Barred Spirals?

Abstract

No significant color differences are found between normal and barred spirals over the range of Hubble stages a - ab - b - bc. Furthermore, no significant difference is seen between the luminosity distributions of normal and barred galaxies over the same range of Hubble stages. However, SBc galaxies are found to be systematically fainter than Sc galaxies at 99% confidence. The observation that normal and barred spirals with Hubble stages a - ab - b - bc have indistinguishable intrinsic colors hints at the possibility that the bars in such spiral galaxies might be ephemeral structures. Finally, it is pointed out that lenticular galaxies of types S0 and SB0 are systematically fainter than are other early-type galaxies, suggesting that such galaxies are situated on evolutionary tracks that differ systematically from those of galaxies that lie along the E - Sa - Sb -Sc and E - SBa - SBb - SBc sequences.

Astronomical Journal, in press

References in corpus (3)

• Galaxy Zoo: Bars in Disk Galaxies
• On the Fraction of Barred Spiral Galaxies
• Multi-Wavelength Properties of Barred Galaxies in the Local Universe. I: Virgo Cluster

Cited by in corpus (6)

• Galaxy Zoo and ALFALFA: Atomic Gas and the Regulation of Star Formation in Barred Disc Galaxies
• Galaxy Zoo: An independent look at the evolution of the bar fraction over the last eight billion years from HST-COSMOS
• IllustrisTNG Insights: Factors Affecting the Presence of Bars in Disk Galaxies
• Demographics of Sloan Digital Sky Survey galaxies along the Hubble sequence
• Luminosities of Barred and Unbarred S0 Galaxies
• The NewHorizon Simulation -- To Bar Or Not To Bar