Integral Field Spectroscopy of 23 Spiral Bulges
| العنوان: | Integral Field Spectroscopy of 23 Spiral Bulges |
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| المؤلفون: | David Merritt, Claudia Scarlata, William B. Sparks, David Axon, Michael R. Merrifield, Dan Batcheldor, James Binney, M. A. Hughes, A. Capetti, Alessandro Marconi |
| المصدر: | The Astrophysical Journal Supplement Series. 160:76-86 |
| بيانات النشر: | American Astronomical Society, 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Physics, Spiral galaxy, Astrophysics (astro-ph), FOS: Physical sciences, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Radial velocity, Space and Planetary Science, Bulge, William Herschel Telescope, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Space Telescope Imaging Spectrograph, Galaxy rotation curve |
| الوصف: | 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 10^6-10^8M_sun 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. Comment: 11 pages, 30 figures, accepted for publication in ApJS |
| تدمد: | 1538-4365 0067-0049 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccf405498031b427753aae301cdf6a6c https://doi.org/10.1086/431483 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ccf405498031b427753aae301cdf6a6c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15384365 00670049 |
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