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Galaxies and their Masks A Conference in Honour of K.C. Freeman, FRS

:	David L. Block, Kenneth C. Freeman, Ivânio Puerari
:	David L. Block, Kenneth Freeman, Ivânio Puerari
:	Galaxies and their Masks A Conference in Honour of K.C. Freeman, FRS
:	Springer-Verlag
:	9781441973177
:	1
:	CHF 190.00
:

:	Astronomie
:	English

:	479
:	Wasserzeichen/DRM
:	PC/MAC/eReader/Tablet
:	PDF

Various kinds of masks obscure our view of our galaxy, the Milky Way, as well as of other galaxies. Masks of interstellar dust affect our measurements within galaxies, on scales ranging from individual supernovae to the galaxies themselves. The ,mass mask (our inability to image mass rather than light) gives astronomers a very incomplete picture of the size and structure of galaxies themselves, because we cannot image the dark matter which provides most of the galactic mass. Another mass is the dynamical mask: as galaxies form, much dynamical information is lost in the birthing process. A new thrust in research is to retrieve such information by means of chemical tagging. About 50 astronomers flew into Namibia in April 2010, to celebrate the 70th birthday of Professor K.C. Freeman, Fellow of the Royal Society. At age 70, Freeman, a father of dark matter in galaxies, continues to be one of planet's most highly cited astronomers. The current volume affords readers a unique perspective on galaxies by probing the thoughts of some of the greatest astronomers of our age. Contributions focus on galaxies from within our Local Group to those in our high redshift Universe. Approximately 40 in-depth review and contributed papers are contained in the volume, each written by an expert in the field. Two unusual features of the current volume include the Star Country of the San people of southern Africa as well as the introduction into astronomy of The Treachery of Images by the Belgian surrealist artist René Magritte. Everything we see hides another thing, we always want to see what is hidden by what we see, said Magritte. These words resonate the theme of the current volume Galaxies and their Masks, which is written at a level to be appreciated by both specialist and doctoral student alike.

	Preface	5
	Contents	15
	A Tribute to Ken Freeman	19
	Stars are Small Dark-Coloured ThingsThat Live in Holes in the Ground	35
	1 Introduction	35
	2 !nanni, Tamme and George Stow	36
	3 Concluding Thoughts	53
	References	55
	Shrouds of the Night -- Galaxies and René Magritte	57
	1 Galaxies and René Magritte	57
	2 The Treachery of Conventional Images of Galaxies	59
	3 The Duality of Spiral Structure	60
	4 The Building of Galactic Disks: Active Evolutionin the Triangulum Spiral M33	68
	4.1 Farewell to Monolithic Collapse of M33	70
	5 Lessons from the Andromeda Spiral	71
	6 Conclusion -- ``La condition humaine''	71
	References	74
	Twin Masks of Spiral Structure? A Local Perspective	79
	1 Introduction	79
	2 Approaches to Modeling	80
	3 Model Statistics and the Two-Arm / Four-Arm Dichotomy	82
	4 Central Bar	90
	References	90
	The Mask of Complexity in Disk Galaxies	93
	1 Introduction	93
	2 Build-Up of Complication	94
	3 Modeling	97
	4 Toward Simplified Models of Disk Galaxies	98
	5 Conclusions	99
	References	100
	Cosmic Magnetic Fields -- An Overview	101
	1 Introduction	102
	2 Observational Methods	103
	3 Magnetic Fields in the Milky Way	105
	4 Magnetic Fields in Galaxies	110
	5 More Distant Magnetic Fields	115
	6 Field Origin and Amplification	115
	References	118
	The Gaseous Halo Mask	121
	1 Introduction	121
	2 Gas Stripping from Dwarf Galaxies	122
	3 Tracking the Evolution of Dwarf Galaxies in Cosmological Simulations	124
	4 What happens to the Stripped Gas?	127
	5 Summary	129
	References	129
	Molecular Gas Properties of Galaxies: The SMA CO(2-1) B0DEGA Legacy Project	131
	1 Introduction	131
	2 The B0DEGA Sample	132
	3 Preliminary Results: CO(2--1) Morphologies and Concentration	133
	4 Discussion	135
	References	137
	The DiVA's Mask: Iconifying Galaxies and Revealing HI Anomalies	139
	1 Introduction	139
	2 Observations, Analysis, and Modelling	140
	3 Preliminary Results	142
	3.1 Iconifying Galaxies	142
	3.2 Revealing HI Anomalies	142
	4 Summary and Future Plans	145
	References	145
	Enigmatic Masks of Cosmic Dust: Lessons from Nearby Galaxies Through the Eyes of the Spitzer Space Telescope	147
	1 Introduction	147
	2 Two Form Families of Stellar-Barred Spirals at 8.0m	148
	2.1 Type 1: Tightly Coupled Morphologies at 3.6 and 8.0m	149
	2.2 Type 2: Straight and Curved Dust Lanes in Emission, Without Trace of a Bar	150
	3 Conclusion	152
	References	153
	The Large Magellanic Cloud: A Power Spectral Analysis of Spitzer Images	155
	1 Introduction	155
	2 Data	156
	3 Analysis	157
	4 Results	157
	5 Simulations	158
	6 Conclusions	161
	References	161
	Light Cores Behind Dark Masks	163
	1 Introduction	163
	2 Observations of NGC5236	164
	3 Modeling of NGC5236 Nucleus	167
	4 Observations of NGC253	168
	5 Concluding Remarks	170
	References	170
	Globalization, Open Access Publishing, and the Disappearance of Print: Threat or Opportunity?	173
	1 Introduction	173
	2 Globalization	174
	3 Open Access Publishing	176
	4 The Disappearance of Print	177
	5 The Future	178
	References	178
	Super Star Clusters and Supernovae in Interacting LIRGs Unmasked by NIR Adaptive Optics	181
	1 Introduction	181
	2 Super Star Cluster Candidates	182
	2.1 The SSC NIR Luminosity Function	182
	3 Searching for Extincted Core-Collapse SNe	184
	4 SF and Dynamics in Interacting Galaxies	185
	5 Summary	186
	References	186
	Structure, Mass, and Stability of Galactic Disks	187
	1 Stellar Disks	187
	2 Stellar Kinematics	188
	3 Mass-to-Light Ratios and ``Maximum Disk''	191
	4 Flaring of HI Layers and Disk Masses	193
	5 Flatness and Truncations in Stellar Disks	196
	References	200
	What Can the Radial Surface Brightness Profiles of Galaxy Discs Tell Us About Their Evolution?	203
	1 Profile Classifica