Stellar Spectral Classification

Stellar Spectral Classification

Definitive and encyclopedic, the book introduces the astrophysics of spectroscopy, reviews the entire field of stellar astronomy, and shows how the well-tested methods of spectral classification are a powerful discovery tool for graduate ...

Author: Richard O. Gray

Publisher: Princeton University Press

ISBN: 9781400833368

Category: Science

Page: 592

View: 157

Written by leading experts in the field, Stellar Spectral Classification is the only book to comprehensively discuss both the foundations and most up-to-date techniques of MK and other spectral classification systems. Definitive and encyclopedic, the book introduces the astrophysics of spectroscopy, reviews the entire field of stellar astronomy, and shows how the well-tested methods of spectral classification are a powerful discovery tool for graduate students and researchers working in astronomy and astrophysics. The book begins with a historical survey, followed by chapters discussing the entire range of stellar phenomena, from brown dwarfs to supernovae. The authors account for advances in the field, including the addition of the L and T dwarf classes; the revision of the carbon star, Wolf-Rayet, and white dwarf classification schemes; and the application of neural nets to spectral classification. Copious figures illustrate the morphology of stellar spectra, and the book incorporates recent discoveries from earth-based and satellite data. Many examples of spectra are given in the red, ultraviolet, and infrared regions, as well as in the traditional blue-violet optical region, all of which are useful for researchers identifying stellar and galactic spectra. This essential reference includes a glossary, handy appendixes and tables, an index, and a Web-based resource of spectra. In addition to the authors, the contributors are Adam J. Burgasser, Margaret M. Hanson, J. Davy Kirkpatrick, and Nolan R. Walborn.
Categories: Science

Stars and Their Spectra

Stars and Their Spectra

Revised and expanded, the second edition of this popular book provides a thorough introduction to stellar spectra.

Author: James B. Kaler

Publisher: Cambridge University Press

ISBN: 9780521899543

Category: Science

Page: 394

View: 408

Revised and expanded, the second edition of this popular book provides a thorough introduction to stellar spectra. Each chapter explores a different star type, including new classes L and T. With modern digital spectra and updates from two decades of astronomical discoveries, it is invaluable for amateur astronomers and students.
Categories: Science

Determination of Atmospheric Parameters of B A F and G Type Stars

Determination of Atmospheric Parameters of B   A   F  and G Type Stars

This book introduces the theory of stellar atmospheres. Almost everything we know about stars is by analysis of the radiation coming from their atmospheres.

Author: Ewa Niemczura

Publisher: Springer

ISBN: 9783319069562

Category: Science

Page: 310

View: 513

This book introduces the theory of stellar atmospheres. Almost everything we know about stars is by analysis of the radiation coming from their atmospheres. Several aspects of astrophysics require accurate atmospheric parameters and abundances. Spectroscopy is one of the most powerful tools at an astronomer’s disposal, allowing the determination of the fundamental parameters of stars: surface temperature, gravity, chemical composition, magnetic field, rotation and turbulence. These can be supplemented by distance measurements or pulsation parameters providing information about stellar interior and stellar evolution, otherwise unavailable. The volume is based on lectures presented at the Wrocław's Spectroscopic School aimed at training young researchers in performing quantitative spectral analysis of low-, mid-, and high-resolution spectra of B, A, and F-type stars.
Categories: Science

Ultracool Dwarfs

Ultracool Dwarfs

This book records our current understanding of the observational and theoretical properties of objects known as ultracool dwarfs. It covers the state of the art in this new field.

Author: Hugh R.A. Jones

Publisher: Springer Science & Business Media

ISBN: 9783642566721

Category: Science

Page: 197

View: 933

Once you have looked at the night sky on a moonless night it is not hard to realise why so much of our science and religion has its roots in the stars. Yet it took until 1850 to realise that fainter stars were not necessarily further away, nor the brighter ones closer. In fact within the magnitude range observable to the naked eye it is probable that the brighter star is in fact further away. Even today the measurement of stellar distances is relatively difficult and is gener ally only done using dedicated telescopes. In the early years of the 20th century Hertzsprung and Russell developed a powerful classification diagram which al lows stars to be distinguished using a plot of their colour versus magnitude. The construction of this diagram involved the use of spectroscopy which has become the cornerstone of modern astronomy. As telescopes become more powerful, de tectors more sensitive and more physics is added to astrophysics, astronomical spectroscopy becomes a more powerful tool. The concern of this book is the spectral classification of stars. With a single spectrum of a star it is possible to uniquely classify an object and find its place on the Hertzsprung-Russell diagram. This spectrum is thus equivalent to having the colour and the magnitude of the object which can in turn be related to mass and other quantities.
Categories: Science

The Analysis of Starlight

The Analysis of Starlight

This book presents a detailed pedagogical account of the equation of state and its applications in several important and fast growing topics in theoretical physics, chemistry and engineering.

Author: J. B. Hearnshaw

Publisher: CUP Archive

ISBN: 0521399165

Category: Science

Page: 531

View: 947

This book presents a detailed pedagogical account of the equation of state and its applications in several important and fast growing topics in theoretical physics, chemistry and engineering. This book is the storv of the analysis of starlight by astronomical spectroscopy. It describes the development of the subject from the time of Joseph Fraunhofer, who, in 1814, used a telescope-mounted prism to observe the spectral light emitted from several bright stars. He discovered that light was missing at certain colours (wavelengths) in the starlight, and these so-called spectral lines were subsequently shown to hold clues to the nature of the stars themselves. The book explains how the classification of stars using their line spectra developed into a major branch of astronomy whilst new methods in astrophysics made possible the approximate quantitative analysis of spectral lines in the 1920s and 1930s. After the Second World War these techniques were considerably improved when computers were programmed to model the structure of the outer layers of stars. Basic concepts in spectroscopy and spectral analysis are also covered and. finally. Dr Hearnshaw comments on the stellar spectroscopy of some individual star.
Categories: Science

A Spectroscopic Atlas of Bright Stars

A Spectroscopic Atlas of Bright Stars

These are conveniently laid out on a single page, opposite tables of spectroscopic properties, and lines and wavelengths identified. This is the first Spectral Atlas designed for amateur astronomers.

Author: Jack Martin

Publisher: Springer Science & Business Media

ISBN: 144190705X

Category: Science

Page: 206

View: 857

A Spectroscopic Atlas of the Stars: A Pocket Field Guide is a standard reference book for all amateur astronomers interested in practical spectroscopy or spectrography. For the first time in one place, it identifies more than 70 (northern hemisphere) bright stars that are suitable observational targets for both amateurs and astronomy students. Finder charts are provided for locating these sometimes-familiar stars. Data for each star includes labelled stellar spectra, a spectral profile with spectral lines identified. These are conveniently laid out on a single page, opposite tables of spectroscopic properties, and lines and wavelengths identified. This is the first Spectral Atlas designed for amateur astronomers. It is equally relevant to college undergraduates, being intended to familiarize astronomers of any age and level of knowledge with labelled stellar spectra and their different properties. It contains much information about stars which is hard to find or inaccessible to most people.
Categories: Science

Spectral Atlas for Amateur Astronomers

Spectral Atlas for Amateur Astronomers

Featuring detailed commented spectral profiles of more than one hundred astronomical objects, in colour, this spectral guide documents most of the important and spectroscopically observable objects accessible using typical amateur equipment ...

Author: Richard Walker

Publisher: Cambridge University Press

ISBN: 9781316738764

Category: Science

Page:

View: 609

Featuring detailed commented spectral profiles of more than one hundred astronomical objects, in colour, this spectral guide documents most of the important and spectroscopically observable objects accessible using typical amateur equipment. It allows you to read and interpret the recorded spectra of the main stellar classes, as well as most of the steps from protostars through to the final stages of stellar evolution as planetary nebulae, white dwarfs or the different types of supernovae. It also presents integrated spectra of stellar clusters, galaxies and quasars, and the reference spectra of some terrestrial light sources, for calibration purposes. Whether used as the principal reference for comparing with your recorded spectra or for inspiring independent observing projects, this atlas provides a breathtaking view into our Universe's past. The atlas is accompanied and supplemented by Spectroscopy for Amateur Astronomers, which explains in detail the methods for recording, processing, analysing and interpreting your spectra.
Categories: Science