Download Free Beyond Blue Stragglers Book in PDF and EPUB Free Download. You can read online Beyond Blue Stragglers and write the review.

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.
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?
Color-magnitude diagrams (CMDs) of open clusters reveal many stars that do not fall on standard isochrones, and thus are not evolving according to standard theory. The most numerous of these are the blue straggler stars (BSSs), stars brighter and bluer than the cluster turnoff that are likely formed from binary mass transfer, stellar mergers, or collisions during dynamical encounters. Many other non-standard stars are also found in clusters, but their origins are not well understood. These include the 'yellow stragglers' found between the BSS region and the red giant branch, and 'sub-subgiants' found fainter and redder than the giant branch. Using the 4 Gyr open cluster M67 as an exemplar, I present results of the first comprehensive study to move beyond the BSS population and begin to understand these other types of non-standard stars. First, I present an asteroseismic analysis of a yellow straggler in M67, demonstrating that it is an evolved blue straggler star of twice the cluster turnoff mass. Next, I present theoretical formation models for the sub-subgiant stars. I focus on three hypotheses of sub-subgiant formation: Roche lobe overflow in binary systems, rapid envelope mass loss from subgiant stars, e.g. during grazing dynamical encounters, and inhibition of convection in giant stars with strong magnetic fields. Finally, I use K2 light curves to identify stars on the M67 main sequence with unusually fast rotation rates given the old age of the cluster. I hypothesize that these stars have been spun up due to recent mergers, collisions, or episodes of mass-transfer, and thus represent lower-luminosity analogs to the blue stragglers. Together, these studies present a much more complete view of the post-merger, collision, and mass-transfer population of M67, and demonstrate that BSSs account for only about half of the post-interaction population. These stars represent the early stages of binary evolution pathways that may lead to many astrophysically important objects including X-ray binaries, double degenerates, and Type 1a supernovae. Studying these products of binary evolution across cluster CMDs is a critical step towards developing better models of binary evolutionary pathways and understanding the impact of binaries on stellar populations.
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.
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.
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.
One of the world's most distinguished astrophysicists presents a comprehensive theoretical treatment of the dynamical evolution of globular clusters. Lyman Spitzer's research in this field established the framework for decades of investigation. Now he summarizes in a unified, systematic way this branch of theoretical astrophysics with its still challenging problems. Originally published in 1988. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
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.
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.