English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

[Abridged] We investigate the nature of the relations between black hole (BH)mass ($M_{\rm BH}$) and the central velocity dispersion ($\sigma$) and, forcore-S\'ersic galaxies, the size of the depleted core ($R_{\rm b}$). Our sampleof 144 galaxies with dynamically determined $M_{\rm BH}$ encompasses 24core-S\'ersic galaxies, thought to be products of gas-poor mergers, andreliably identified based on high-resolution HST imaging. For core-S\'ersicgalaxies -- i.e., combining normal-core ($R_{\rm b} < 0.5 $ kpc) and large-coregalaxies ($R_{\rm b} \gtrsim 0.5$ kpc), we find that $M_{\rm BH}$ correlatesremarkably well with $R_{\rm b}$ such that $M_{\rm BH} \propto R_{\rm b}^{1.20\pm 0.14}$ (rms scatter in log $M_{\rm BH}$ of $\Delta_{\rm rms} \sim 0.29$dex), confirming previous works on the same galaxies except three new ones.Separating the sample into S\'ersic, normal-core and large-core galaxies, wefind that S\'ersic and normal-core galaxies jointly define a single log-linear$M_{\rm BH}-\sigma$ relation $M_{\rm BH} \propto \sigma^{ 4.88 \pm 0.29}$ with$\Delta_{\rm rms} \sim 0.47$ dex, however, at the high-mass end large-coregalaxies (four with measured $M_{\rm BH}$) are offset upward from this relationby ($2.5-4) \times \sigma_{\rm s}$, explaining the previously reportedsteepening of the $M_{\rm BH}-\sigma$ relation for massive galaxies. Large-corespheroids have magnitudes $M_{V} \le -23.50$ mag, half-light radii Re $>$ 10kpc and are extremely massive $M_{*} \ge 10^{12}M_{\odot}$. Furthermore, thesespheroids tend to host ultramassive BHs ($M_{\rm BH} \ge 10^{10}M_{\odot}$)tightly connected with their $R_{\rm b}$ rather than $\sigma$. The less popular$M_{\rm BH}-R_{\rm b}$ relation exhibits $\sim$ 62% less scatter in log $M_{\rmBH}$ than the $M_{\rm BH}- \sigma$ relations.

Ultramassive black holes in the most massive galaxies: $M_{\rm BH}-\sigma$ versus $M_{\rm BH}-R_{\rm b}$