%0 Generic %1 Inskip2011 %A Inskip, Katherine J. %A Jahnke, Knud %A Rix, Hans-Walter %A van de Ven, Glenn %D 2011 %K blackhole %T Resolving the dynamical mass of a z~1.3 QSO host galaxy using SINFONI and Laser Guide Star assisted AO %U http://arxiv.org/abs/1103.6026 %X Recent studies of the tight scaling relations between the masses of supermassive black holes and their host galaxies have suggested that this mass ratio may evolve with redshift, in the sense that in the past BHs constituted a larger fraction of their host galaxies' stellar mass, but these statistical arguments are weakened by methodological limitations in determining accurate galaxy masses and the resulting evolutionary constraints are still very loose. Here we report the first results of a new and complementary diagnostic route, using ESO VLT SINFONI with LASER AO to obtain high-spatial-resolution observations and directly determine the dynamical mass of the host galaxy around the z=1.3 luminous quasar J090543.56+043347.3, at the peak epoch for BH/galactic bulge growth 10 billion years in the past. With M_BH, MgII = 9.02 +- 1.43 x 10^8 M_sun, M_BH, H= 5.06+3.46-2.00 x 10^8 M_sun and M_dyn = 1.8+1.0-0.6 x10^11 M_sun, we find that the BH to bulge mass ratio of this source lies only a factor of 2 from the mean z=0 relation between these two quantities, well within the scatter for typical low-redshift galaxies. J090543.56+043347.3 itself displays clear signs of a recent tidal interaction and of extended star formation at a rate of at least 80-90 M_sun/yr, up to an upper limit of 167 M_sun/yr, well above the cosmic average for a galaxy of this mass and redshift. We argue that its subsequent evolution will move it closer to the z=0 BH vs. bulge mass relation. In line with complementary studies which suggest that the bulk of any evolution occurs at early cosmic times, our results provide an independent robust indicator for at most only low levels of cosmic evolution in the BH vs. bulge mass relation out to z~1.3. Our approach is manifestly powerful, and can be readily applied to larger observational samples; similar data on a further seven objects are currently being analysed.

@misc{Inskip2011, abstract = { Recent studies of the tight scaling relations between the masses of supermassive black holes and their host galaxies have suggested that this mass ratio may evolve with redshift, in the sense that in the past BHs constituted a larger fraction of their host galaxies' stellar mass, but these statistical arguments are weakened by methodological limitations in determining accurate galaxy masses and the resulting evolutionary constraints are still very loose. Here we report the first results of a new and complementary diagnostic route, using ESO VLT SINFONI with LASER AO to obtain high-spatial-resolution observations and directly determine the dynamical mass of the host galaxy around the z=1.3 luminous quasar J090543.56+043347.3, at the peak epoch for BH/galactic bulge growth 10 billion years in the past. With M_BH, MgII = 9.02 +- 1.43 x 10^8 M_sun, M_BH, H\alpha = 5.06+3.46-2.00 x 10^8 M_sun and M_dyn = 1.8+1.0-0.6 x10^11 M_sun, we find that the BH to bulge mass ratio of this source lies only a factor of 2 from the mean z=0 relation between these two quantities, well within the scatter for typical low-redshift galaxies. J090543.56+043347.3 itself displays clear signs of a recent tidal interaction and of extended star formation at a rate of at least 80-90 M_sun/yr, up to an upper limit of 167 M_sun/yr, well above the cosmic average for a galaxy of this mass and redshift. We argue that its subsequent evolution will move it closer to the z=0 BH vs. bulge mass relation. In line with complementary studies which suggest that the bulk of any evolution occurs at early cosmic times, our results provide an independent robust indicator for at most only low levels of cosmic evolution in the BH vs. bulge mass relation out to z~1.3. Our approach is manifestly powerful, and can be readily applied to larger observational samples; similar data on a further seven objects are currently being analysed. }, added-at = {2011-03-31T18:14:47.000+0200}, author = {Inskip, Katherine J. and Jahnke, Knud and Rix, Hans-Walter and van de Ven, Glenn}, biburl = {https://www.bibsonomy.org/bibtex/2ed7d21b5565b660fdb09854df1afdc59/miki}, description = {[1103.6026] Resolving the dynamical mass of a z~1.3 QSO host galaxy using SINFONI and Laser Guide Star assisted AO}, interhash = {6c4b9ea26fe6931170275dddb4c54870}, intrahash = {ed7d21b5565b660fdb09854df1afdc59}, keywords = {blackhole}, note = {cite arxiv:1103.6026 Comment: Submitted to ApJ, 13 pages, 9 Figures}, timestamp = {2011-03-31T18:14:47.000+0200}, title = {Resolving the dynamical mass of a z~1.3 QSO host galaxy using SINFONI and Laser Guide Star assisted AO}, url = {http://arxiv.org/abs/1103.6026}, year = 2011 }