Galaxy Morphology And Classification

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Galaxy Morphology And Classification

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Author : Sidney Van den Bergh
language : en
Publisher: Cambridge University Press
Release Date : 1998-04-16

Galaxy Morphology And Classification written by Sidney Van den Bergh and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-04-16 with Science categories.

A concise and up-to-date guide to the shape of galaxies and how they can be classified, by one of the pioneers of the field.

Galaxy Morphology

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Author : Benne Holwerda
language : en
Publisher: IOP Publishing Limited
Release Date : 2022-03-31

Galaxy Morphology written by Benne Holwerda and has been published by IOP Publishing Limited this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-31 with Science categories.

Galaxy morphology is a long-standing subfield of astronomy, moving from visual qualifications to quantitative morphometrics. This book covers the descriptions developed by astronomers to describe the appearance of galaxies, primarily in optical, ultraviolet and near-infrared wavelengths. These descriptions range from galaxy-wide down to clumps of stars and the phenomena on scales in between. It covers qualitative classification using descriptions of the light distributions, as well as some of the near-future techniques that are expected to play a role as astronomy moves to surveys of millions of galaxies and to depths that are dominated by low-surface-brightness. Each chapter is accompanied by an appropriate Jupyter Notebook Python programming assignment. The book is aimed at the graduate student level for researchers in need to a review of galaxy morphology techniques. Key Features: Aimed at graduate students or researchers in need to a review of galaxy morphology techniques Presents qualitative and quantitative galaxy morphology classifications Cover near-future techniques expected to play a role for large galaxy surveys Includes Jupyter Notebook workable examples in each chapter

The Origin Evolution And Classification Of Field And Cluster Galaxy Populations

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Author : Christopher J. Conselice
language : en
Publisher:
Release Date : 2001

The Origin Evolution And Classification Of Field And Cluster Galaxy Populations written by Christopher J. Conselice and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

A Quantitative Study Of Peculiarities In Galaxy Morphology

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Author : Katherine Liang-Kai Wu
language : en
Publisher:
Release Date : 1999

A Quantitative Study Of Peculiarities In Galaxy Morphology written by Katherine Liang-Kai Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Galaxies categories.

The World Of Galaxies

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Author : Harold G. Corwin
language : en
Publisher:
Release Date : 1989

The World Of Galaxies written by Harold G. Corwin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Biography & Autobiography categories.

From 12 April to 14 April 1988, 120 of Gerard and Antoinette de Vaucouleurs's friends and colleagues gathered at the Institut d' Astrophysique in Paris to cel ebrate Gerard's 70th birthday and his remarkable career in Astronomy. The gathering also honored the memory of Antoinette (who died 29 August 1987 after a long illness) and her own no less remarkable career. This volume collects the 24 invited review papers and the 60 contributed poster papers presented at the meeting. Gerard de Vaucouleurs Gerard de Vaucouleurs was born on 25 April 1918 in Paris, where he spent his boyhood. He became an active amateur astronomer in the early 1930's, making extensive observations of Mars, Jupiter, and variable stars (including the bright supernova of 1937 in IC 4182). He also began life-long interests in astronomical photography and galaxy cataloguing during this period. In 1939, he met the director of the Paris transport system and an equally avid amateur astronomer, Julien Peridier. De Vaucouleurs worked at Peridier's private observatory at Le Houga in southwestern France on and off throughout the next decade. His undergraduate work was in mathematics, astronomy, and experimental physics; this, combined with his interest in observational astronomy, formed his life-long empirical approach to science. After spending 18 months in the French army early in 1939 - 41, Gerard returned to the Peridier observatory and then, in 1943, to his studies at the Sorbonne, where he met Antoinette.

Astronomy And Big Data

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Author : Kieran Jay Edwards
language : en
Publisher: Springer Science & Business Media
Release Date : 2014-04-12

Astronomy And Big Data written by Kieran Jay Edwards and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-12 with Technology & Engineering categories.

With the onset of massive cosmological data collection through media such as the Sloan Digital Sky Survey (SDSS), galaxy classification has been accomplished for the most part with the help of citizen science communities like Galaxy Zoo. Seeking the wisdom of the crowd for such Big Data processing has proved extremely beneficial. However, an analysis of one of the Galaxy Zoo morphological classification data sets has shown that a significant majority of all classified galaxies are labelled as “Uncertain”. This book reports on how to use data mining, more specifically clustering, to identify galaxies that the public has shown some degree of uncertainty for as to whether they belong to one morphology type or another. The book shows the importance of transitions between different data mining techniques in an insightful workflow. It demonstrates that Clustering enables to identify discriminating features in the analysed data sets, adopting a novel feature selection algorithms called Incremental Feature Selection (IFS). The book shows the use of state-of-the-art classification techniques, Random Forests and Support Vector Machines to validate the acquired results. It is concluded that a vast majority of these galaxies are, in fact, of spiral morphology with a small subset potentially consisting of stars, elliptical galaxies or galaxies of other morphological variants.

Morphology And Dynamics Of Galaxies

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Author : James Binney
language : en
Publisher:
Release Date : 1982

Morphology And Dynamics Of Galaxies written by James Binney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Galaxies categories.

Toward A New Millennium In Galaxy Morphology

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Author : David L. Block
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Toward A New Millennium In Galaxy Morphology written by David L. Block and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

South Africa - a land of paradigm shifts. A land where we are willing to leave behind the old, to bravely accept the new. What do we need to exit the dark ages in the morphology of galaxies? How prevalent is the cherishing of old concepts? Traditional morphology has been `mask-oriented', focusing on masks of dust and gas which may constitute only 5 percent of the dynamical mass of a galaxy. Some of the world's foremost astronomers flew to South Africa to address morphologically related issues at an International Conference, the proceedings of which are contained in this volume. Examine predicted extinction curves for primordial dust at high redshift. Stars evolve; why not dust? Read about the breakdown of the Hubble sequence at a redshift of one. Explore the morphology of rings; the mysteries of metal-rich globular clusters; vigorous star-formation in the Large Magellanic Cloud; the world of secular evolution, where galaxies change their shapes within one Hubble time. And much more. Examine a new kinematical classification scheme of the unmasked, dust-penetrated near-infrared images of spiral galaxies. This volume contains over 80 refereed contributions (including 18 in-depth keynote review articles), 40 pages of questions and answers, a panel discussion transcribed from tape and 24 colour plates. The volume is unique in that contributions from both high and low redshift experts are represented at a level readily accessible to postdoctoral students entering the exciting world of morphology - whether it be of the local, or more distant, Universe.

Evolution Of The Universe Of Galaxies

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Author : Richard G. Kron
language : en
Publisher:
Release Date : 1990

Evolution Of The Universe Of Galaxies written by Richard G. Kron and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Science categories.

Classification And Discovery In Large Astronomical Surveys

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Author : Coryn Bailer-Jones
language : en
Publisher: American Institute of Physics
Release Date : 2008-12-11

Classification And Discovery In Large Astronomical Surveys written by Coryn Bailer-Jones and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-12-11 with Computers categories.

Astronomical surveys produce large amounts of photometric, spectroscopic and time-series data. Object classification, parameter determination, novelty detection and the discovery of structure in these are challenging tasks. This book, featuring contributions from both astronomers and computer scientists, discusses a broad range of astronomical problems and shows how various machine learining and statistical analysis techniques are being used to solve them.