Ecology of Blue Straggler Stars

Ecology of Blue Straggler Stars PDF Author: Henri M. J. Boffin
Publisher: Springer
ISBN: 3662444348
Category : Science
Languages : en
Pages : 364

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Book Description
The existence of blue straggler stars, which appear younger, hotter, and more massive than their siblings, is at odds with a simple picture of stellar evolution. Such stars should have exhausted their nuclear fuel and evolved long ago to become cooling white dwarfs. They are found to exist in globular clusters, open clusters, dwarf spheroidal galaxies of the Local Group, OB associations and as field stars. This book summarises the many advances in observational and theoretical work dedicated to blue straggler stars. Carefully edited extended contributions by well-known experts in the field cover all the relevant aspects of blue straggler stars research: Observations of blue straggler stars in their various environments; Binary stars and formation channels; Dynamics of globular clusters; Interpretation of observational data and comparison with models. The book also offers an introductory chapter on stellar evolution written by the editors of the book.

Ecology of Blue Straggler Stars

Ecology of Blue Straggler Stars PDF Author: Henri M. J. Boffin
Publisher: Springer
ISBN: 3662444348
Category : Science
Languages : en
Pages : 364

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Book Description
The existence of blue straggler stars, which appear younger, hotter, and more massive than their siblings, is at odds with a simple picture of stellar evolution. Such stars should have exhausted their nuclear fuel and evolved long ago to become cooling white dwarfs. They are found to exist in globular clusters, open clusters, dwarf spheroidal galaxies of the Local Group, OB associations and as field stars. This book summarises the many advances in observational and theoretical work dedicated to blue straggler stars. Carefully edited extended contributions by well-known experts in the field cover all the relevant aspects of blue straggler stars research: Observations of blue straggler stars in their various environments; Binary stars and formation channels; Dynamics of globular clusters; Interpretation of observational data and comparison with models. The book also offers an introductory chapter on stellar evolution written by the editors of the book.

Blue Straggler

Blue Straggler PDF Author: MST Publishing
Publisher: Kathy Lynn Harris
ISBN: 0615529232
Category : Fiction
Languages : en
Pages : 25

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Book Description
Kathy Lynn Harris' clever debut novel is a laugh-out-loud, yet poignant, story about good friends, bad choices, quirky families and new beginnings - a Texas version of Anna Maxted's Getting Over It with the wit and humor of a Melissa Banks story.Just what is a blue straggler? A blue straggler is a star that appears to be disconnected from those stars surrounding it in its globular cluster and has an anomalous blue color and high luminosity relative to those stars that surround it.But this is not a story about astronomy.Bailey Miller is "disconnected" from the cluster of her rural south Texas family. She has never quite fit in and now in her early 30s, she finds herself struggling with inner turmoil and a series of bad choices in her life.She blames many of her personal demons, and there are many, on a self-proclaimed condition called "RODA"- short for Recurring, Obstinate Dread and Anguish. She's drinking too much (even for a member of her family), has a penchant to eat spoonful after spoonful of Cool Whip, works in a job that bores her beyond description and can't keep a relationship longer than it takes for milk to expire in her fridge.Even with the help of her two outspoken friends, Idamarie - owner of a local cafe and fourth-generation Texas woman with the big hair to prove it - and her quirky college pal Rudy, she's having a hard time.As a series of sometimes humorous, often semi-tragic, events send her reeling, Bailey packs up her Honda and heads out of Texas, in search of herself and answers to secrets from her great-grandmother's past.Chock full of memorable characters, this novel takes readers on a journey from San Antonio to a small mountain town in Colorado and back, as Bailey uncovers not only the secrets of her great-grandmother's life, but also her own, and finding love along the way.In the end, you'll ask yourself, as Bailey does: Are bad choices passed down through generations like tarnished wedding silver, frayed quilts and not-so-tasteful costume jewelry? Can we really define family and home for ourselves, or does the past always determine who we are today?

Blue Stragglers

Blue Stragglers PDF Author: Rex A. Saffer
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 224

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Book Description


Tidal Streams in the Local Group and Beyond

Tidal Streams in the Local Group and Beyond PDF Author: Heidi Jo Newberg
Publisher: Springer
ISBN: 3319193368
Category : Science
Languages : en
Pages : 256

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Book Description
This volume is written by leading scientists in the field, who review the current state of our knowledge of tidal streams in the Milky Way, the Andromeda galaxy, and in other nearby galaxies. The cosmological origins of dwarf galaxies and the physical processes by which they are tidally disrupted into streams and incorporated into galaxy halos are discussed. The techniques that have been used to identify tidal streams are presented and will be useful to researchers who would like to find substructures in the next generation of optical sky surveys, including Pan-STARRS and LSST. The methods that are currently under development to constrain both large scale distribution of dark matter in the Milky Way and the (small scale) lumpiness of the dark matter distribution are also explained. The authors also provide motivation for future spectroscopic surveys of Milky Way halo stars, which will aid both in the identification of tidal streams and the constraint of dark matter properties. This volume is aimed at graduate students who are beginning this field of research, but is also a resource for researchers who study tidal streams and related fields. In addition to presenting the physical processes by which tidal streams are created, it also reviews the current state of the observations and the progress towards utilizing these observations to constrain the distribution of dark matter in the Milky Way. The book will introduce anyone with a background in astrophysics to the field of tidal streams.

The Milky Way and Beyond

The Milky Way and Beyond PDF Author: Erik Gregersen Associate Editor, Astronomy and Space Exploration
Publisher: The Rosen Publishing Group, Inc
ISBN: 1615300244
Category : Juvenile Nonfiction
Languages : en
Pages : 219

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Book Description
Provides information on the properties and behavior of the spiral galaxy known as the Milky Way; discusses the origin and evolution of stars, nebulae, and other galaxies; and offers an historical survey of the study of galaxies.

The Complex Lives of Star Clusters

The Complex Lives of Star Clusters PDF Author: David Stevenson
Publisher: Springer
ISBN: 3319142348
Category : Science
Languages : en
Pages : 351

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Book Description
As with the author’s recent books Extreme Explosions and Under a Crimson Sun, the complex topic of star clusters is broken down and made accessible with clear links to other areas of astronomy in a language which the non-specialist can easily read and enjoy. The full range of topics are addressed regarding how star clusters are formed. Why is it some are dense conglomerates of stars while others are looser associations? Are the young, brilliant clusters seen in neighboring galaxies such as the Large Magellanic Cloud, M33 or M82 analogous to the ancient globulars seen in the Milky Way? How will these clusters change as their stars wane and die? More interestingly, how does living in a dense star cluster affect the fates of the stars and any attendant planets that accompany them? Star clusters form many of the most dazzling objects in the astronomers’ catalogs. Many amateur astronomers are interested in exploring how these objects are created and what it would be like to live among these objects. From the historical views of how star clusters came about to the most recent assumptions about how stars within these clusters evolve, different strands of science, from observation to theory, are woven together into a compelling investigation specifically targeted at amateur astronomers.

Deep-Sky Companions: The Caldwell Objects

Deep-Sky Companions: The Caldwell Objects PDF Author: Stephen James O'Meara
Publisher: Cambridge University Press
ISBN: 1316033538
Category : Science
Languages : en
Pages : 577

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Book Description
The Caldwell Catalogue, compiled by the late Sir Patrick Moore (1923–2012), has delighted amateur astronomers worldwide since its publication in 1995. Twenty years on, Stephen James O'Meara revisits his guide to these 109 deep-sky delights, breathing new life into them and the 20 additional observing targets included as an appendix. This second edition retains O'Meara's detailed visual descriptions and sketches, accompanied by stunning new images taken by amateur photographer Mario Motta and observations by Magda Streicher. The astrophysical descriptions have been updated to account for the many advances in our understanding of the objects, not least due to an armada of space-borne observatories and the new technologies used in large ground-based telescopes. Ideal for observers who have completed the Messier objects and are looking for their next challenge, Deep-Sky Companions: The Caldwell Objects is a fitting tribute from a renowned visual observer to one of astronomy's most famous personalities.

Shades of Freedom

Shades of Freedom PDF Author: A. Leon Higginbotham Jr.
Publisher: Oxford University Press
ISBN: 0190284099
Category : Social Science
Languages : en
Pages : 254

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Book Description
Few individuals have had as great an impact on the law--both its practice and its history--as A. Leon Higginbotham, Jr. A winner of the Presidential Medal of Freedom, the nation's highest civilian honor, he has distinguished himself over the decades both as a professor at Yale, the University of Pennsylvania, and Harvard, and as a judge on the United States Court of Appeals. But Judge Higginbotham is perhaps best known as an authority on racism in America: not the least important achievement of his long career has been In the Matter of Color, the first volume in a monumental history of race and the American legal process. Published in 1978, this brilliant book has been hailed as the definitive account of racism, slavery, and the law in colonial America. Now, after twenty years, comes the long-awaited sequel. In Shades of Freedom, Higginbotham provides a magisterial account of the interaction between the law and racial oppression in America from colonial times to the present, demonstrating how the one agent that should have guaranteed equal treatment before the law--the judicial system--instead played a dominant role in enforcing the inferior position of blacks. The issue of racial inferiority is central to this volume, as Higginbotham documents how early white perceptions of black inferiority slowly became codified into law. Perhaps the most powerful and insightful writing centers on a pair of famous Supreme Court cases, which Higginbotham uses to portray race relations at two vital moments in our history. The Dred Scott decision of 1857 declared that a slave who had escaped to free territory must be returned to his slave owner. Chief Justice Roger Taney, in his notorious opinion for the majority, stated that blacks were "so inferior that they had no right which the white man was bound to respect." For Higginbotham, Taney's decision reflects the extreme state that race relations had reached just before the Civil War. And after the War and Reconstruction, Higginbotham reveals, the Courts showed a pervasive reluctance (if not hostility) toward the goal of full and equal justice for African Americans, and this was particularly true of the Supreme Court. And in the Plessy v. Ferguson decision, which Higginbotham terms "one of the most catastrophic racial decisions ever rendered," the Court held that full equality--in schooling or housing, for instance--was unnecessary as long as there were "separate but equal" facilities. Higginbotham also documents the eloquent voices that opposed the openly racist workings of the judicial system, from Reconstruction Congressman John R. Lynch to Supreme Court Justice John Marshall Harlan to W. E. B. Du Bois, and he shows that, ironically, it was the conservative Supreme Court of the 1930s that began the attack on school segregation, and overturned the convictions of African Americans in the famous Scottsboro case. But today racial bias still dominates the nation, Higginbotham concludes, as he shows how in six recent court cases the public perception of black inferiority continues to persist. In Shades of Freedom, a noted scholar and celebrated jurist offers a work of magnificent scope, insight, and passion. Ranging from the earliest colonial times to the present, it is a superb work of history--and a mirror to the American soul.

The Secret Life of Stars

The Secret Life of Stars PDF Author: Lisa Harvey-Smith
Publisher: National Geographic Books
ISBN: 1760761583
Category : Science
Languages : en
Pages : 0

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Book Description
In The Secret Life of Stars, award-winning astronomer Lisa Harvey-Smith takes us on a cosmic journey to meet some of the weirdest, most extreme, and enigmatic stars in the universe. We all know the Sun, the powerhouse of our solar system, but what about Luyten’s Flare, the Rosino-Zwicky Object, or Chanal’s variable star? For those whose curiosity takes them far beyond Earth’s atmosphere, The Secret Life of Stars offers a personal and readily understood introduction to some of the Galaxy’s most remarkable stars. Written by award-winning astronomer Lisa Harvey-Smith, each chapter explains various different and unusual stars and their amazing characteristics and attributes, from pulsars, blue stragglers, and white dwarfs, to cannibal stars and explosive supernovae. With beautiful chapter illustrations by Eirian Chapman, this book brings to life the remarkable personalities of these stars, reminding readers what a diverse and unpredictable universe we live in and how fortunate we are to live around a stable star, our Sun.

The Quantum Revolution

The Quantum Revolution PDF Author: Arthur Kroker
Publisher: University of Toronto Press
ISBN: 1487558007
Category : Art
Languages : en
Pages : 317

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Book Description
We are currently riders of the information storm. AI fascinates us, images mesmerize us, data defines us, algorithms remember us, news bombards us, devices connect us, isolation saddens us. Deeply embedded in digital technology, we are the very first inhabitants of life in the quantum zone. The Quantum Revolution is about life today – its entanglements, creativity, politics, and artistic vision. Arthur Kroker and David Cook explore a new way of thinking drawn directly from the quantum imaginary itself. They explain the quantum revolution as everyday life, where technology moves fast, and where, under cover of the digital devices that connect us, the most sophisticated concepts of technology and science originating in mathematics, astrophysics, and biogenetics have swiftly flooded human consciousness, shaped social behavior, and crafted individual identity. The book discusses the concept of the quantum zone as a new way of understanding digital culture, and presents stories about art, technology, and society, as well as a series of reflections on art as a gateway to understanding the quantum imaginary. Richly illustrated with sixty images of critically engaged photos and artwork, The Quantum Revolution privileges a new way of understanding and seeing politics, society, and culture through the lens of the duality that is the essence of the quantum imaginary.