Integral field spectroscopy of 23 spiral bulges

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dc.contributor.author Batcheldor, Dan en_US
dc.contributor.author Axon, David en_US
dc.contributor.author Merritt, David en_US
dc.contributor.author Hughes, M. en_US
dc.contributor.author Marconi, Alessandro en_US
dc.contributor.author Binney, James en_US
dc.contributor.author Capetti, Alessandro en_US
dc.contributor.author Merrifield, Michael en_US
dc.contributor.author Scarlata, Claudia en_US
dc.contributor.author Sparks, William en_US
dc.date.accessioned 2006-03-30T20:16:24Z en_US
dc.date.available 2006-03-30T20:16:24Z en_US
dc.date.issued 2005-09 en_US
dc.identifier.citation Astrophysical Journal Supplement Series 160N1 (Sep 2005) 76 en_US
dc.identifier.issn 1538-4365 en_US
dc.identifier.uri http://hdl.handle.net/1850/1494 en_US
dc.description Also archived In: astro-ph/0504660 v1 29 Apr 2005 en_US
dc.description.abstract We have obtained Integral Field Spectroscopy for 23 spiral bulges using INTEGRAL on the William Herschel Telescope and SPIRAL on the Anglo-Australian Telescope. This is the first 2D survey directed solely at the bulges of spiral galaxies. Eleven galaxies of the sample do not have previous measurements of the stellar velocity dispersion([sigma]*) . These data are designed to complement our Space Telescope Imaging Spectrograph program for estimating black hole masses in the range 10[to the 6th power] −10[to the 8th power] M⊙ using gas kinematics from nucleated disks. These observations will serve to derive the stellar dynamical bulge properties using the traditional Mgb and CaII triplets. We use both Cross Correlation and Maximum Penalized Likelihood to determine projected [sigma]* in these systems and present radial velocity fields, major axis rotation curves, curves of growth and [sigma]* fields. Using the Cross Correlation to extract the low order 2D stellar dynamics we generally see coherent radial rotation and irregular velocity dispersion fields suggesting that [sigma]* is a non-trivial parameter to estimate (Refer to PDF file for exact formulas). en_US
dc.description.sponsorship Partial support for this work was obtained from a PPARC studentship. en_US
dc.format.extent 1151892 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Astrophysical Journal en_US
dc.relation.ispartofseries vol. 160 en_US
dc.relation.ispartofseries no. 1 en_US
dc.relation.ispartofseries p. 76 en_US
dc.subject Integral field spectroscopy-galaxies en_US
dc.subject Spiral galaxies-elocity distributions en_US
dc.title Integral field spectroscopy of 23 spiral bulges en_US
dc.type Article en_US

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