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Author(s): Greene, Jenny E.; Seth, Anil; den Brok, Mark; Braatz, James A; Henkel, Christian; et al

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Abstract: We examine the alignment between H2O megamaser disks on subparsec scales with circumnuclear disks and bars on <500 pc scales observed with the Hubble Space Telescope (HST)/WFC3. The HST imaging reveals young stars, indicating the presence of gas. The megamaser disks are not well aligned with the circumnuclear bars or disks as traced by stars in the HST images. We speculate on the implications of the observed misalignments for fueling supermassive black holes in gas-rich spiral galaxies. In contrast, we find a strong preference for the rotation axes of the megamaser disks to align with radio continuum jets observed on greater than or similar to 50 pc scales, in those galaxies for which radio continuum detections are available. Subarcsecond observations of molecular gas with ALMA will enable a more complete understanding of the interplay between circumnuclear structures.
Publication Date: 10-Jul-2013
Electronic Publication Date: 24-Jun-2013
Citation: Greene, Jenny E, Seth, Anil, den Brok, Mark, Braatz, James A, Henkel, Christian, Sun, Ai-Lei, Peng, Chien Y, Kuo, Cheng-Yu, Impellizzeri, CM Violette, Lo, KY. (2013). USING MEGAMASER DISKS TO PROBE BLACK HOLE ACCRETION. ASTROPHYSICAL JOURNAL, 771 (10.1088/0004-637X/771/2/121
DOI: doi:10.1088/0004-637X/771/2/121
ISSN: 0004-637X
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Type of Material: Journal Article
Journal/Proceeding Title: ASTROPHYSICAL JOURNAL
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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