Resolved Molecular Gas Emission in a QSO host galaxy at z = 6.4

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

We present high-resolution VLA observations of the molecular gas in the host galaxy of the highest-redshift quasar currently known, SDSS J1148+5251 (z=6.42). Our VLA data of the CO(3--2) emission have a maximum resolution of 0.17×0.13 arcsec2 (≤1 kpc2), and enable us to resolve the molecular gas emission both spatially and in velocity. The molecular gas in J1148+5251 is extended to a radius of 2.5 kpc, and the central region shows 2 peaks, separated by 0.3 arcsec (1.7 kpc). Assuming that the molecular gas is gravitationally bound, we estimate a dynamical mass of ˜ 4.5 × 1010 M&sun; within a radius of 2.5 kpc. This dynamical mass estimate leaves little room for matter other than the detected molecular gas, and -- in particular -- the data are inconsistent with a ˜1012 M&sun; stellar bulge, which would be predicted based on the MBH-σbulge relation.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Resolved Molecular Gas Emission in a QSO host galaxy at z = 6.4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Resolved Molecular Gas Emission in a QSO host galaxy at z = 6.4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resolved Molecular Gas Emission in a QSO host galaxy at z = 6.4 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1701542

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.