TY - GEN
T1 - On classical and pseudo-bulges
T2 - Conference on Pathways Through and Eclectic Universe
AU - Peletier, Reynier F.
PY - 2008
Y1 - 2008
N2 - Historically, galactic bulges are thought to be elliptical galaxy-like objects sitting in the middle of a generally larger disk. There are, however, more and more claims that some bulges are much more similar to disks. John Kormendy has named these pseudo-bulges. In this paper I discuss some recent integral field spectroscopy of the SAURON collaboration on a sample of 24 Sa and Sab galaxies. Using their two-dimensional maps of the stellar velocity, velocity dispersion, and absorption line strength, it is now much easier to understand the nature of nearby galactic bulges. I review several aspects of bulges, namely the surface photometry, stellar kinematics, stellar populations, the presence of interstellar matter, and their behavior in the fundamental plane of early-type galaxies.
AB - Historically, galactic bulges are thought to be elliptical galaxy-like objects sitting in the middle of a generally larger disk. There are, however, more and more claims that some bulges are much more similar to disks. John Kormendy has named these pseudo-bulges. In this paper I discuss some recent integral field spectroscopy of the SAURON collaboration on a sample of 24 Sa and Sab galaxies. Using their two-dimensional maps of the stellar velocity, velocity dispersion, and absorption line strength, it is now much easier to understand the nature of nearby galactic bulges. I review several aspects of bulges, namely the surface photometry, stellar kinematics, stellar populations, the presence of interstellar matter, and their behavior in the fundamental plane of early-type galaxies.
KW - EMISSION-LINE KINEMATICS
KW - TELESCOPE NICMOS OBSERVATIONS
KW - STELLAR POPULATION GRADIENTS
KW - INTEGRAL-FIELD ABSORPTION
KW - VELOCITY DISPERSION DROPS
KW - PEANUT-SHAPED BULGES
KW - SAURON PROJECT
KW - DISK GALAXIES
KW - SECULAR EVOLUTION
KW - HUBBLE-SEQUENCE
M3 - Conference contribution
SN - 978-1-58381-650-9
T3 - ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
SP - 232
EP - 241
BT - PATHWAYS THROUGH AN ECLECTIC UNIVERSE
A2 - Knapen, JH
A2 - Mahoney, TJ
A2 - Vazdekis, A
PB - ASTRONOMICAL SOC PACIFIC
CY - SAN FRANCISCO
Y2 - 23 April 2007 through 27 April 2007
ER -