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 present ALMA sub-kpc- to kpc-scale resolution observations of the [CII],CO(9-8), and OH$^{+}$\,($1_{1}$--$0_{1}$) lines along with their dust continuumemission toward the FIR luminous quasar SDSS J231038.88+185519.7 at $z =6.0031$. The [CII] brightness follows a flat distribution with a Sersic indexof 0.59. The CO(9-8) line and the dust continuum can be fit with an unresolvednuclear component and an extended Sersic component with a Sersic index of ~1.The dust temperature drops with distance from the center. The effective radiusof the dust continuum is smaller than that of the line emission and the dustmass surface density, but is consistent with that of the star formation ratesurface density. The OH$^{+}$\,($1_{1}$--$0_{1}$) line shows a P-Cygni profilewith an absorption, which may indicate an outflow with a neutral gas mass of$(6.2\pm1.2)\times10^{8} M_{\odot}$ along the line of sight. We employed a 3Dtilted ring model to fit the [CII] and CO(9-8) data cubes. The two lines areboth rotation dominated and trace identical disk geometries and gas motions. Wedecompose the circular rotation curve measured from the kinematic model fit tothe [CII] line into four matter components (black hole, stars, gas, and darkmatter). The quasar-starburst system is dominated by baryonic matter inside thecentral few kiloparsecs. We constrain the black hole mass to be$2.97^{+0.51}_{-0.77}\times 10^{9}\,M_{\odot}$; this is the first time that thedynamical mass of a black hole has been measured at $z\sim6$. A massive stellarcomponent (on the order of $10^{9}\,M_{\odot}$) may have already existed whenthe Universe was only ~0.93 Gyr old. The relations between the black hole massand the baryonic mass of this quasar indicate that the central supermassiveblack hole may have formed before its host galaxy. [Abridged version. Pleasesee the full abstract in the manuscript.]

The interstellar medium distribution, gas kinematics, and system dynamics of the far-infrared luminous quasar SDSS J2310+1855 at $z=6.0$