Walter Baade

Walter Baade PDF Author: Donald E. Osterbrock
Publisher: Princeton University Press
ISBN: 9780691049366
Category : Biography & Autobiography
Languages : en
Pages : 300

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Book Description
Rather, it was his discovery of two distinct stellar populations: old and young stars. This discovery opened wide the previously marginal fields of stellar and galactic evolution - research areas that would be among the most fertile and exciting in all of astrophysics for decades to come."--BOOK JACKET.

Walter Baade

Walter Baade PDF Author: Donald E. Osterbrock
Publisher: Princeton University Press
ISBN: 0691223289
Category : Science
Languages : en
Pages : 285

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Book Description
Although less well known outside the field than Edwin Hubble, Walter Baade was arguably the most influential observational astronomer of the twentieth century. Written by a fellow astronomer deeply familiar with Baade and his work, this is the first biography of this major figure in American astronomy. In it, Donald Osterbrock suggests that Baade's greatest contribution to astrophysics was not, as is often contended, his revision of Hubble's distance and age scales for the universe. Rather, it was his discovery of two distinct stellar populations: old and young stars. This discovery opened wide the previously marginal fields of stellar and galactic evolution--research areas that would be among the most fertile and exciting in all of astrophysics for decades to come. Baade was born, educated, and gained his early research experience in Germany. He came to the United States in 1931 as a staff member of Mount Wilson Observatory, which housed the world's largest telescope. There, he pioneered research on supernovae. With the 100-inch telescope, he studied globular clusters and the structure of the Milky Way, every step leading him closer to the population concept he discovered during the wartime years, when the skies of southern California were briefly darkened. Most Mount Wilson astronomers were working on weapons-development crash programs devoted to bringing Baade's native country to its knees, while he, formally an enemy alien in their midst, was confined to Los Angeles County but had almost unlimited use of the most powerful telescope in the world. After his great discovery, Baade continued his research with the new 200-inch telescope at Palomar. Always respected and well liked, he became even more famous among astronomers as they shifted their research to the fields he had opened. Publicity-shy and seemingly unconcerned with publication, however, Baade's celebrity remained largely within the field. This accomplished biography at last introduces Baade--and his important work--to a wider public, including the newest generation of skywatchers.

Evolution of Stars and Galaxies

Evolution of Stars and Galaxies PDF Author: Walter Baade
Publisher: MIT Press (MA)
ISBN:
Category : Science
Languages : en
Pages : 340

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Book Description


With Stars in Their Eyes

With Stars in Their Eyes PDF Author: Jim Bernard Breckinridge
Publisher: Oxford University Press
ISBN: 0190915676
Category : Astronomers
Languages : en
Pages : 533

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Book Description
"Aden B. Meinel and wife Marjorie P. Meinel stood at the confluence of several overarching technological developments of the 20th century: postwar aerial surveillance by spy planes and satellites, solar energy, the evolution of telescope design, interdisciplinary optics, and photonics. In 1945 he was a Navy Ensign ordered to find the secret tunnels in Nazi Germany where the V-2 rockets menacing Great Britain and Belgium were being manufactured. After receiving both his B.A. degree and Ph.D. in astronomy from the University of California at Berkeley within three years, Aden was invited to join the scientific staff at Yerkes Observatory/University of Chicago. While there he was selected by the National Science Foundation to manage the development of a new national observatory on Kitt Peak, Arizona, and served as its first Director. In the early 1960s he founded the Optical Sciences Center at the University of Arizona, which later metamorphosed into the College of Optical Sciences with the doctoral program in interdisciplinary optics. It was here that he also designed the first Multiple Mirror Telescope and with wife Marjorie pioneered the feasibility of solar energy power on a commercial scale. Aden's knowledge and expertise in optics made him invaluable in research on cameras for spy satellites and spy planes overflying the Soviet Union and Southeast Asia. After retirement the Meinels worked for NASA/JPL on the precursor of the James Webb Space Telescope and on the exoplanet program. They also served on the team that corrected spherical aberration in the Hubble Space Telescope"--

Stellar Populations

Stellar Populations PDF Author: Piet C. van der Kruit
Publisher: Springer Science & Business Media
ISBN: 9401101256
Category : Science
Languages : en
Pages : 463

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Book Description
The concept of Stellar Populations has played a fundamental role in astronomy in the last few decades. It was introduced by Walter Baade after he was able to resolve the Andromeda Nebula and its companions into stars when he used red-sensitive plates and realised that there were two fundamentally different Herzsprung-Russell diagrams in our and these nearby galaxies (common stars in the solar neighborhood versus globular clusters). This result was published in two papers in 1944 in volume 100 of the Astrophysical Journal. Subsequent research gave the concept a much firmer basis and at the famous Vatican Symposium of 1957 resulted in a general scheme of the concept and a working hypothesis for idea's on the formation and evolution of the Galaxy. This has been a guiding principle of studies of our and other galaxies for decades. Some years ago it seemed to us appropriate to commemorate Baade's seminal work in 1994, when it would have its 50-th anniversary, and to review its present status and also its role in contempory understanding. While we were in Leiden for an administrative committee, we discussed the matter again and over beers on October 29, 1991 we decided the take the initiative for an IAU Symposium on the subject during the 1994 IAU General Assembly in Den Haag, the Netherlands.

An Introduction to Galaxies and Cosmology

An Introduction to Galaxies and Cosmology PDF Author: David John Adams
Publisher: Cambridge University Press
ISBN: 9780521546232
Category : Science
Languages : en
Pages : 452

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Book Description
This introductory textbook has been designed by a team of experts for elementary university courses in astronomy and astrophysics. It starts with a detailed discussion of the structure and history of our own Galaxy, the Milky Way, and goes on to give a general introduction to normal and active galaxies including models for their formation and evolution. The second part of the book provides an overview of the wide range of cosmological models and discusses the Big Bang and the expansion of the Universe. Written in an accessible style that avoids complex mathematics, and illustrated in colour throughout, this book is suitable for self-study and will appeal to amateur astronomers as well as undergraduate students. It contains numerous helpful learning features such as boxed summaries, student exercises with full solutions, and a glossary of terms. The book is also supported by a website hosting further teaching materials.

Unveiling Galaxies

Unveiling Galaxies PDF Author: Jean-René Roy
Publisher: Cambridge University Press
ISBN: 1108417019
Category : Nature
Languages : en
Pages : 311

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Book Description
A thought provoking study of the powerful impact of images in guiding astronomers' understanding of galaxies through time.

Black Hole

Black Hole PDF Author: Marcia Bartusiak
Publisher: Yale University Press
ISBN: 0300213638
Category : Science
Languages : en
Pages : 252

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Book Description
The award-winning science writer “packs a lot of learning into a deceptively light and enjoyable read” exploring the contentious history of the black hole (New Scientist). For more than half a century, physicists and astronomers engaged in heated dispute over the possibility of black holes in the universe. The strange notion of a space-time abyss from which not even light escapes seemed to confound all logic. Now Marcia Bartusiak, author of Einstein’s Unfinished Symphony and The Day We Found the Universe, recounts the frustrating, exhilarating, and at times humorous battles over one of history’s most dazzling ideas. Bartusiak shows how the black hole helped revive Einstein’s greatest achievement, the general theory of relativity, after decades of languishing in obscurity. Not until astronomers discovered such surprising new phenomena as neutron stars and black holes did the once-sedate universe transform into an Einsteinian cosmos, filled with sources of titanic energy that can be understood only in the light of relativity. Black Hole explains how Albert Einstein, Stephen Hawking, and other leading thinkers completely changed the way we see the universe.

Losing the Nobel Prize: A Story of Cosmology, Ambition, and the Perils of Science's Highest Honor

Losing the Nobel Prize: A Story of Cosmology, Ambition, and the Perils of Science's Highest Honor PDF Author: Brian Keating
Publisher: W. W. Norton & Company
ISBN: 1324000929
Category : Science
Languages : en
Pages : 328

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Book Description
"Riveting."—Science A Forbes, Physics Today, Science News, and Science Friday Best Science Book Of 2018 Cosmologist and inventor of the BICEP (Background Imaging of Cosmic Extragalactic Polarization) experiment, Brian Keating tells the inside story of the mesmerizing quest to unlock cosmology’s biggest mysteries and the human drama that ensued. We follow along on a personal journey of revelation and discovery in the publish-or-perish world of modern science, and learn that the Nobel Prize might hamper—rather than advance—scientific progress. Fortunately, Keating offers practical solutions for reform, providing a vision of a scientific future in which cosmologists may finally be able to see all the way back to the very beginning.

First Light

First Light PDF Author: Richard Preston
Publisher: Random House
ISBN: 0307817423
Category : Science
Languages : en
Pages : 305

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Book Description
Seven years before Richard Preston wrote about horrifying viruses in The Hot Zone, he turned his attention to the cosmos. In First Light, he demonstrates his gift for creating an exciting and absorbing narrative around a complex scientific subject--in this case the efforts by astronomers at the Palomar Observatory in the San Gabriel Mountains of California to peer to the farthest edges of space through the Hale Telescope, attempting to solve the riddle of the creation of the universe. Richard Preston's name became a household word with The Hot Zone, which sold nearly 800,000 copies in hardcover, was on The New York Times's bestseller list for 42 weeks, and was the subject of countless magazine and newspaper articles. Preston has become a sought-after commentator on popular science subjects.