SIMBAD references

2005ApJS..160...76B - Astrophys. J., Suppl. Ser., 160, 76-86 (2005/September-0)

Integral field spectroscopy of 23 spiral bulges.

BATCHELDOR D., AXON D., MERRITT D., HUGHES M.A., MARCONI A., BINNEY J., CAPETTI A., MERRIFIELD M., SCARLATA C. and SPARKS W.

Abstract (from CDS):

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 two-dimensional survey directed solely at the bulges of spiral galaxies. Eleven galaxies of the sample do not have previous measurements of the stellar velocity dispersion (σ*). These data are designed to complement our Space Telescope Imaging Spectrograph program for estimating black hole masses in the range 106-108 M using gas kinematics from nucleated disks. These observations will serve to derive the stellar dynamical bulge properties using the traditional Mg b and Ca II triplets. We use both cross-correlation and maximum penalized likelihood to determine projected σ*in these systems and present radial velocity fields, major axis rotation curves, curves of growth, and σ*fields. Using cross-correlation to extract the low-order two-dimensional stellar dynamics we generally see coherent radial rotation and irregular velocity dispersion fields suggesting that σ*is a nontrivial parameter to estimate.

Abstract Copyright:

Journal keyword(s): Galaxies: Kinematics and Dynamics - Galaxies: Spiral - Stellar Dynamics - Techniques: Spectroscopic

Simbad objects: 23

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