Colour asymmetry between galaxies with clockwise and counterclockwise handedness

Abstract

Recent studies have shown that SDSS galaxies with clockwise patterns are photometrically different from galaxies with anti-clockwise patterns. The purpose of this study is to identify possible differences between the colour of galaxies with clockwise handedness and the colour of galaxies with anti-clockwise handedness. A dataset of 162,514 SDSS galaxies was separated into clockwise and counterclockwise galaxies, and the colours of spiral galaxies with clockwise handedness were compared to the colour of spiral galaxies with anti-clockwise handedness. The results show that the i-r colour in clockwise galaxies in SDSS is significantly higher compared to anti-clockwise SDSS galaxies. The colour difference is strongest between the right ascension of 30${}^o$ and 60${}^o$, while the RA range of 180${}^o$ to 210${}^o$ shows a much smaller difference.

arXiv commentApSS, accepted

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• New evidence and analysis of cosmological-scale asymmetry in galaxy spin directions
• Large-scale asymmetry between clockwise and counterclockwise galaxies revisited
• Analysis of $\sim 10^6$ spiral galaxies from four telescopes shows large-scale patterns of asymmetry in galaxy spin directions
• Large-scale patterns of galaxy spin rotation show cosmological-scale parity violation and multipoles
• Galaxy spin direction asymmetry in JWST deep fields
• Multipole alignment in the large-scale distribution of spin direction of spiral galaxies