NGC 3512

Lore & Background

NGC 3512 was discovered by German-British astronomer William Herschel on 11 April 1785. Its distance is uncertain: its velocity relative to the cosmic microwave background yields a Hubble distance of 24.73 ± 1.76 Mpc, while four non-redshift measurements give a farther mean distance of 34.800 ± 3.434 Mpc. The galaxy is classified as a LINER, indicating a nucleus with broad emission lines from weakly ionized atoms. It belongs to the NGC 3504 Group (also designated LGG 227), which includes eight other galaxies such as NGC 3414, NGC 3504, and UGC 5958. This group is part of the Leo II Groups, a string of galaxies and clusters on the western edge of the Virgo Supercluster. The group was also referenced by Abraham Mahtessian in a 1998 research paper. One supernova, SN 2001fv, was observed in NGC 3512: a Type II event of magnitude 16.4, discovered by British amateur astronomer Mark Armstrong on 3 November 2001.

Reader's Guide

NGC 3512 holds significance as a member of the NGC 3504 Group, which is embedded within the Leo II Groups, a structure that traces the western boundary of the Virgo Supercluster. Its classification as a LINER galaxy places it among those with active galactic nuclei that emit characteristic low-ionization spectral lines, offering insights into the processes governing such nuclei. The distance discrepancy between Hubble-based and non-redshift measurements highlights the challenges in accurately determining the galaxy's location, a common issue in extragalactic astronomy. The discovery of SN 2001fv, a Type II supernova, adds to the observational record of stellar explosions within this galaxy. The group's inclusion in Abraham Mahtessian's 1998 research underscores its role in studies of galaxy clustering and large-scale structure. Overall, NGC 3512 contributes to understanding galaxy evolution, group dynamics, and the cosmic web in the Leo region.

Did You Know?

• NGC 3512 is a LINER galaxy, meaning its nucleus shows broad emission lines from weakly ionized atoms.
• One supernova, SN 2001fv (Type II, magnitude 16.4), was discovered in NGC 3512 on 3 November 2001 by Mark Armstrong.
• The galaxy's distance is uncertain, with Hubble distance at 24.73 Mpc and a mean non-redshift distance of 34.80 Mpc.