NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-24 T19:03:00 PDT
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For refcode 2002PASP..114..137H:
Retrieve 23 NED objects in this reference.
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NED Abstract

Copyright by Astronomical Society of the Pacific. Reproduced by permission
2002PASP..114..137H An Efficient Strategy to Select Targets for Gasdynamical Measurements of Black Hole Masses Using the Hubble Space Telescope LUIS C. HO, MARC SARZI, HANS-WALTER RIX, JOSEPH C. SHIELDS, GREG RUDNICK, ALEXEI V. FILIPPENKO, AND AARON J. BARTH Received 2001 September 21; accepted 2001 October 24; published 2001 January 11 ABSTRACT. Gasdynamical studies using the Hubble Space Telescope are an integral component for future progress in the search for massive black holes in galactic nuclei. Here we present an extensive set of gas rotation curves obtained with the Space Telescope Imaging Spectrograph for the central regions of 23 disk galaxies. We find that the bulges of randomly selected, nearby spiral and S0 galaxies generally do not contain well-defined gaseous disks. Only 15%-20% of disk galaxies have regular, symmetric velocity fields useful for dynamical analysis. Through comparison of the kinematics with Hubble Space Telescope images of the nuclear regions, we show that the probability of success can be significantly boosted by preselecting objects whose central dust lanes follow a well-ordered, circularly symmetric pattern. The dust morphology can be ascertained efficiently by visual inspection of unsharp-masked images.
Retrieve 23 NED objects in this reference.
Please click here for ADS abstract

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