%0 Generic %1 fathi2013follows %A Fathi, Kambiz %A Lundgren, Andreas A. %A Kohno, Kotaro %A Piñol-Ferrer, Nuria %A Martín, Sergio %A Espada, Daniel %A Hatziminaoglou, Evanthia %A Imanishi, Masatoshi %A Izumi, Takuma %A Krips, Melanie %A Matsushita, Satoki %A Meier, David S. %A Nakai, Naomasa %A Sheth, Kartik %A Turner, Jean %A van de Ven, Glenn %A Wiklind, Tommy %D 2013 %K accretion alma blackhole %T ALMA follows streaming of dense gas down to 40 pc from the supermassive black hole in NGC1097 %U http://arxiv.org/abs/1304.6722 %X We present a kinematic analysis of the dense molecular gas in the central 200 parsecs of the nearby galaxy NGC1097, based on Cycle 0 observations with the Atacama Large Millimeter/sub-millimeter Array (ALMA). We use the HCN(4-3) line to trace the densest interstellar molecular gas, and quantify its kinematics, and estimate an inflow rate for the molecular gas. We find a striking similarity between the ALMA kinematic data and the analytic spiral inflow model that we have previously constructed based on ionized gas velocity fields on larger scales. We are able to follow dense gas streaming down to 40 pc distance from the supermassive black hole in this Seyfert 1 galaxy. In order to fulfill marginal stability, we deduce that the dense gas is confined to a very thin disc, and we derive a dense gas inflow rate of 0.09 Msun/yr at 40 pc radius. Combined with previous values from the Ha and CO gas, we calculate a combined molecular and ionized gas inflow rate of 0.2 Msun/yr at 40 pc distance from the central supermassive black hole of NGC1097.

@misc{fathi2013follows, abstract = {We present a kinematic analysis of the dense molecular gas in the central 200 parsecs of the nearby galaxy NGC1097, based on Cycle 0 observations with the Atacama Large Millimeter/sub-millimeter Array (ALMA). We use the HCN(4-3) line to trace the densest interstellar molecular gas, and quantify its kinematics, and estimate an inflow rate for the molecular gas. We find a striking similarity between the ALMA kinematic data and the analytic spiral inflow model that we have previously constructed based on ionized gas velocity fields on larger scales. We are able to follow dense gas streaming down to 40 pc distance from the supermassive black hole in this Seyfert 1 galaxy. In order to fulfill marginal stability, we deduce that the dense gas is confined to a very thin disc, and we derive a dense gas inflow rate of 0.09 Msun/yr at 40 pc radius. Combined with previous values from the Ha and CO gas, we calculate a combined molecular and ionized gas inflow rate of 0.2 Msun/yr at 40 pc distance from the central supermassive black hole of NGC1097.}, added-at = {2013-04-26T19:36:15.000+0200}, author = {Fathi, Kambiz and Lundgren, Andreas A. and Kohno, Kotaro and Piñol-Ferrer, Nuria and Martín, Sergio and Espada, Daniel and Hatziminaoglou, Evanthia and Imanishi, Masatoshi and Izumi, Takuma and Krips, Melanie and Matsushita, Satoki and Meier, David S. and Nakai, Naomasa and Sheth, Kartik and Turner, Jean and van de Ven, Glenn and Wiklind, Tommy}, biburl = {https://www.bibsonomy.org/bibtex/28101163f4b18149a6709a19123d881cc/miki}, description = {[1304.6722] ALMA follows streaming of dense gas down to 40 pc from the supermassive black hole in NGC1097}, interhash = {2dd3ebc387f3413e280ed2f14c22a9f8}, intrahash = {8101163f4b18149a6709a19123d881cc}, keywords = {accretion alma blackhole}, note = {cite arxiv:1304.6722Comment: Accepted for Publication in the ApJ Letters}, timestamp = {2013-04-26T19:36:15.000+0200}, title = {ALMA follows streaming of dense gas down to 40 pc from the supermassive black hole in NGC1097}, url = {http://arxiv.org/abs/1304.6722}, year = 2013 }