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

We report the detection of CO(1-0) emission from NGC 1277, a lenticulargalaxy in the Perseus Cluster. NGC 1277 has previously been proposed to host anovermassive black hole (BH) compared to the galaxy bulge luminosity (mass),based on stellar-kinematic measurements. The CO(1-0) emission, observed withthe IRAM Plateau de Bure Interferometer (PdBI) using both, a more compact(2.9-arcsec resolution) and a more extended (1-arcsec resolution)configuration, is likely to originate from the dust lane encompassing thegalaxy nucleus at a distance of 0.9 arcsec (~320 pc). The double-horned CO(1-0)profile found at 2.9-arcsec resolution traces $1.5\times 10^8\ M_\odot$ ofmolecular gas, likely orbiting in the dust lane at $\sim 550\ \mathrm{km\s^{-1}}$, which suggests a total enclosed mass of $\sim 2\times 10^{10}\M_\odot$. At 1-arcsec resolution, the CO(1-0) emission appears spatiallyresolved along the dust lane in east-west direction, though at a lowsignal-to-noise ratio. In agreement with the previous stellar-kinematicmeasurements, the CO(1-0) kinematics is found to be consistent with an $\sim1.7\times 10^{10}\ M_\odot$ BH for a stellar mass-to-light ratio of$M/L_V=6.3$, while a less massive BH of $\sim 5\times 10^{9}\ M_\odot$ ispossible when assuming a larger $M/L_V=10$. While the molecular gas reservoirmay be associated with a low level of star formation activity, the extended2.6-mm continuum emission is likely to originate from a weak AGN, possiblycharacterized by an inverted radio-to-millimetre spectral energy distribution.Literature radio and X-ray data indicate that the BH in NGC 1277 is alsoovermassive with respect to the Fundamental Plane of BH activity.

The overmassive black hole in NGC 1277: new constraints from molecular gas kinematics