The 2dF Redshift Survey II: UGC 8584 - Redshift Periodicity and Rings

TL;DR

This study investigates the redshift periodicity and ring structures around galaxy UGC 8584, revealing quasars obeying Karlsson periodicity, galaxy rings surrounding active nuclei, and implications for large obscuring particles.

Contribution

It presents evidence linking galaxy rings and shells to active nuclei and quasars following Karlsson periodicity, suggesting large obscuring particles and ejection velocities.

Findings

Quasars near UGC 8584 follow Karlsson periodicity.

Galaxy rings tend to surround active nuclei.

Obscuration likely caused by large particles, not dust.

Abstract

UGC 8584 was selected by a computer program as having a number of quasars around it that obeyed the Karlsson periodicity in its reference frame. On closer examination 9 of the nearest 10 quasars turned out to be extremely close to the predicted values. Also it turned out that UGC 8584 was a disturbed triple galaxy and a strong triple radio source as well as being a strong millimeter and infrared source. Evidence for present ejection velocities of $z_v \sim .01$ for the associated quasars is present and some pairing of ejections is noted. A new and important result emerges from this sample of galaxy/quasar families, namely that rings and shells of galaxies and quasars tend to surround galaxies which have active nuclei. Test cases suggest obscuration of the background around these galaxies out to about 20' or beyond. Because incidents of strong reddening are not observed, obscuring particles are suggested to be large compared to optical wavelengths. In principle, material ejected with the quasars could be of sizes of gravel or larger.