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Author : J. B. Hearnshaw
Publisher :
ISBN 13 :
Total Pages : 472 pages
Book Rating : 4.:/5 (318 download)
Download or read book Precise Stellar Radial Velocities written by J. B. Hearnshaw and published by . This book was released on 1999 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Astronomical Union. Colloquium
Publisher :
ISBN 13 :
Total Pages : 476 pages
Book Rating : 4.:/5 (45 download)
Download or read book Stellar Radial Velocities written by International Astronomical Union. Colloquium and published by . This book was released on 1985 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Florian Franziskus Bauer
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)
Download or read book Radial Velocities in Low Mass Stars: Improving the Wavelength Solution of Astronomical Spectrographs and Understanding Stellar Noise written by Florian Franziskus Bauer and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The radial velocity method has been used to discover hundreds of extrasolar planets in the past two decades. The continuous improvements in radial velocity precision have revealed several rocky planets in the habitable zones of low mass stars. However, a true Earth analogue has not yet been found because the precision needed for such a discovery is about one order of magnitude below what current state-of-the-art spectrographs can achieve. In order to find the radial velocity signal of an Earth-like planet in the habitable zone of a Sun-like star, several aspects of the radial velocity metho...
Author : Nader Haghighipour
Publisher : Springer Science & Business Media
ISBN 13 : 9048186870
Total Pages : 334 pages
Book Rating : 4.0/5 (481 download)
Download or read book Planets in Binary Star Systems written by Nader Haghighipour and published by Springer Science & Business Media. This book was released on 2010-06-03 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1988, in an article on the analysis of the measurements of the variations in the radial velocities of a number of stars, Campbell, Walker, and Yang reported an - teresting phenomenon;the radial velocity variations of Cephei seemed to suggest the existence of a Jupiter-like planet around this star. This was a very exciting and, at the same time, very surprising discovery. It was exciting because if true, it would have marked the detection of the ?rst planet outside of our solar system. It was surprising because the planet-hosting star is the primary of a binary system with a separation less than 19 AU, a distance comparable to the planetary distances in our solar system. The moderatelyclose orbit of the stellar companionof Cephei raised questions about the reality of its planet. The skepticism over the interpretation of the results (which was primarily based on the idea that binary star systems with small sepa- tions would not be favorable places for planet formation) became so strong that in a subsequent paper in 1992, Walker and his colleagues suggested that the planet in the Cephei binary might not be real, and the variations in the radial velocity of this star might have been due to its chromospheric activities.
Author : Erik N. Johnson
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (144 download)
Download or read book Stellar Activity and Radial Velocities in M Dwarfs written by Erik N. Johnson and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stellar activity is one of the principal obstacles to achieving sub 1 m/s radial velocity precision in exoplanet detection surveys. Understanding how stellar activity affects the stellar environment is crucial to mitigating or eliminating unexpected radial velocity excursions that mask planetary signals. We look at the two extreme ends of stellar activity in M dwarfs. First, we characterize over 14,000 spectra from 345 M dwarfs of the CARMENES1 Guaranteed Time Observations (GTO) sample and quantify a quiet sample within that set of stars. We were able to reduce the interfering effects of mo...
Author : Adelchi Azzalini
Publisher : Cambridge University Press
ISBN 13 : 1107029279
Total Pages : 271 pages
Book Rating : 4.1/5 (7 download)
Download or read book The Skew-Normal and Related Families written by Adelchi Azzalini and published by Cambridge University Press. This book was released on 2014 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The standard resource for statisticians and applied researchers. Accessible to the wide range of researchers who use statistical modelling techniques.
Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 030947941X
Total Pages : 187 pages
Book Rating : 4.3/5 (94 download)
Download or read book Exoplanet Science Strategy written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-01-17 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past decade has delivered remarkable discoveries in the study of exoplanets. Hand-in-hand with these advances, a theoretical understanding of the myriad of processes that dictate the formation and evolution of planets has matured, spurred on by the avalanche of unexpected discoveries. Appreciation of the factors that make a planet hospitable to life has grown in sophistication, as has understanding of the context for biosignatures, the remotely detectable aspects of a planet's atmosphere or surface that reveal the presence of life. Exoplanet Science Strategy highlights strategic priorities for large, coordinated efforts that will support the scientific goals of the broad exoplanet science community. This report outlines a strategic plan that will answer lingering questions through a combination of large, ambitious community-supported efforts and support for diverse, creative, community-driven investigator research.
Author : Dag Gullberg
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (937 download)
Download or read book On the Determination of Accurate Stellar Radial-velocity Measures written by Dag Gullberg and published by . This book was released on 2003 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen L. Redman
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (862 download)
Download or read book Precise Radial Velocities in the Near Infrared written by Stephen L. Redman and published by . This book was released on 2011 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brian May
Publisher : Springer Science & Business Media
ISBN 13 : 0387777067
Total Pages : 231 pages
Book Rating : 4.3/5 (877 download)
Download or read book A Survey of Radial Velocities in the Zodiacal Dust Cloud written by Brian May and published by Springer Science & Business Media. This book was released on 2008-08-05 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the summer and autumn of 2006 I read several interviews with Brian May in which he mentioned his desire to complete the PhD that he had abandoned in 1974. I looked up the papers he had published while a PhD student, which were on spectroscopic studies of the motion of the dust responsible for the zodiacal light, and felt that there was a basis for a thesis. Since he had been a student at Imperial, I knew, as Head of the Astrophysics Group at Imperial, that it would be good for the Group if he came and worked with us. I got in touch with him by email and suggested he come and talk about it. He replied enthusiastically and said that he was working on typing up what he had completed by 1974. I gradually realized that I was the only staff member at Imperial who had previously worked on zodiacal dust, so that I would have to act as his supervisor. Eventually we met and I tried to assess whether he would be able to find time for the huge amount of work that finishing off a thesis involves, particularly if it has not been touched for over 30 years. Since some of Brian’s emails were coming from the recording studio I knew there was strong competition for his time.
Author : Tiago L. Campante
Publisher : Springer
ISBN 13 : 3319593153
Total Pages : 288 pages
Book Rating : 4.3/5 (195 download)
Download or read book Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds written by Tiago L. Campante and published by Springer. This book was released on 2017-11-03 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the IVth Azores International Advanced School in Space Sciences entitled "Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds". The school addressed the topics at the forefront of scientific research being conducted in the fields of asteroseismology and exoplanetary science, two fields of modern astrophysics that share many synergies and resources. These proceedings comprise the contributions from 18 invited lecturers, including both monographic presentations and a number of hands-on tutorials.
Author : David F. Gray
Publisher : Cambridge University Press
ISBN 13 : 9780521851862
Total Pages : 560 pages
Book Rating : 4.8/5 (518 download)
Download or read book The Observation and Analysis of Stellar Photospheres written by David F. Gray and published by Cambridge University Press. This book was released on 2005-11-17 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Third edition textbook for use on advanced courses on stellar physics.
Author : Mike Guidry
Publisher : Cambridge University Press
ISBN 13 : 1107197880
Total Pages : 573 pages
Book Rating : 4.1/5 (71 download)
Download or read book Stars and Stellar Processes written by Mike Guidry and published by Cambridge University Press. This book was released on 2019-02-07 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the physics of stars in relation to modern topics such as neutrino oscillations, supernovae, black holes, and gravitational waves.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309157994
Total Pages : 324 pages
Book Rating : 4.3/5 (91 download)
Download or read book New Worlds, New Horizons in Astronomy and Astrophysics written by National Research Council and published by National Academies Press. This book was released on 2011-02-04 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by discoveries, and enabled by leaps in technology and imagination, our understanding of the universe has changed dramatically during the course of the last few decades. The fields of astronomy and astrophysics are making new connections to physics, chemistry, biology, and computer science. Based on a broad and comprehensive survey of scientific opportunities, infrastructure, and organization in a national and international context, New Worlds, New Horizons in Astronomy and Astrophysics outlines a plan for ground- and space- based astronomy and astrophysics for the decade of the 2010's. Realizing these scientific opportunities is contingent upon maintaining and strengthening the foundations of the research enterprise including technological development, theory, computation and data handling, laboratory experiments, and human resources. New Worlds, New Horizons in Astronomy and Astrophysics proposes enhancing innovative but moderate-cost programs in space and on the ground that will enable the community to respond rapidly and flexibly to new scientific discoveries. The book recommends beginning construction on survey telescopes in space and on the ground to investigate the nature of dark energy, as well as the next generation of large ground-based giant optical telescopes and a new class of space-based gravitational observatory to observe the merging of distant black holes and precisely test theories of gravity. New Worlds, New Horizons in Astronomy and Astrophysics recommends a balanced and executable program that will support research surrounding the most profound questions about the cosmos. The discoveries ahead will facilitate the search for habitable planets, shed light on dark energy and dark matter, and aid our understanding of the history of the universe and how the earliest stars and galaxies formed. The book is a useful resource for agencies supporting the field of astronomy and astrophysics, the Congressional committees with jurisdiction over those agencies, the scientific community, and the public.
Author : Ivan Hubeny
Publisher : Princeton University Press
ISBN 13 : 0691163294
Total Pages : 944 pages
Book Rating : 4.6/5 (911 download)
Download or read book Theory of Stellar Atmospheres written by Ivan Hubeny and published by Princeton University Press. This book was released on 2014-10-26 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most authoritative synthesis of the quantitative spectroscopic analysis of stellar atmospheres This book provides an in-depth and self-contained treatment of the latest advances achieved in quantitative spectroscopic analyses of the observable outer layers of stars and similar objects. Written by two leading researchers in the field, it presents a comprehensive account of both the physical foundations and numerical methods of such analyses. The book is ideal for astronomers who want to acquire deeper insight into the physical foundations of the theory of stellar atmospheres, or who want to learn about modern computational techniques for treating radiative transfer in non-equilibrium situations. It can also serve as a rigorous yet accessible introduction to the discipline for graduate students. Provides a comprehensive, up-to-date account of the field Covers computational methods as well as the underlying physics Serves as an ideal reference book for researchers and a rigorous yet accessible textbook for graduate students An online illustration package is available to professors at press.princeton.edu
Author : A. P. Hatzes
Publisher :
ISBN 13 : 9780750316897
Total Pages : 0 pages
Book Rating : 4.3/5 (168 download)
Download or read book The Doppler Method for the Detection of Exoplanets written by A. P. Hatzes and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of exoplanets is one of the most vibrant fields of astrophysics today. Precise radial velocity (RV, or Doppler) measurements created the field by discovering the first exoplanets. Although employed for more than 30 years, RV measurements are still relevant today; when used with the transit method it provides the first characterization of exoplanets in terms of its mass, radius, and bulk density. These provide the first clues as to the internal structure of the exoplanet. With this text, Hatzes provides a deep understanding of the Doppler method, including how to achieve RV measurement precision, as well as the challenges, limitations, and potential of the technique. It also covers other aspects of the method such instrumentation, wavelength calibration, finding periodic signals in RV time series, signal interpretation, and Keplerian orbits. It's an essential reference for researchers and graduate students in the field of exoplanets, and additionally stellar spectroscopists and instrumentalists.
Author : Michael Perryman
Publisher : Cambridge University Press
ISBN 13 : 1108419771
Total Pages : 973 pages
Book Rating : 4.1/5 (84 download)
Download or read book The Exoplanet Handbook written by Michael Perryman and published by Cambridge University Press. This book was released on 2018-08-30 with total page 973 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and in-depth review of exoplanet research, covering the discovery methods, physics and theoretical background.
