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Hydrogen Deficient Stars and Related Objects

Proceeding of the 87th Colloquium of the International Astronomical Union Held at Mysore, India, 10–15 Nevember 1985

  • Conference proceedings
  • © 1986

Overview

Editors:
  1. Kurt Hunger

    1. Institute for Theoretical Physics and Observatory, University of Kiel, Germany

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  2. Detlef Schönberner

    1. Institute for Theoretical Physics and Observatory, University of Kiel, Germany

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  3. N. Kameswara Rao

    1. Indian Institute of Astrophysics, Bangalore, India

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Part of the book series: Astrophysics and Space Science Library (ASSL, volume 128)

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Table of contents (51 papers)

  1. Front Matter

    Pages i-xix
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  2. Introduction

    1. Introductory Comments

      • William P. Bidelman
      Pages 3-5

  3. Basic Data

    1. Front Matter

      Pages 7-7
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    2. Basic Data on Hydrogen-Deficient Stars

      • J. S. Drilling
      Pages 9-22

    3. Radial Velocities of Extreme Helium Stars and of Hot sdO Stars

      • John S. Drilling, U. Heber
      Pages 23-30

  4. Hot Extreme Helium Stars

    1. Front Matter

      Pages 31-31
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    2. Spectroscopic Analyses of Hot Extreme Helium Stars

      • U. Heber
      Pages 33-50

    3. Photometric Properties of the Extreme Helium Stars

      • Arlo U. Landolt
      Pages 51-65

    4. High Resolution Spectroscopy of Six New Extreme Helium Stars

      • U. Heber, G. Jonas, J. S. Drilling
      Pages 67-72

    5. Emission Lines in High Resolution Spectra of Extreme Helium Stars

      • U. Heber
      Pages 73-79

    6. The Peculiar Spectrum of the Extreme Helium Star BD-9° 4395

      • C. S. Jeffery
      Pages 81-85

    7. Non-Radial Pulsations in the extreme Helium Star HD 160641

      • A. E. Lynas-Gray, D. Kilkenny, I. Skillen, C. S. Jeffery
      Pages 87-93

    8. The Period of the Extreme Helium Star BD+1°4381

      • C. S. Jeffery, P. W. Hill, K. Morrison
      Pages 95-100

    9. A Preliminary Analysis of the Pulsating Extreme Helium Star V652 Her (Bd+13°3224)

      • C. S. Jeffery, U. Heber, P. W. Hill
      Pages 101-107

    10. The Radial Velocity Curve of V652 Her (Bd+13°3224)

      • P. W. Hill, C. S. Jeffery
      Pages 109-115

    11. The Light Curve of the Pulsating Extreme Helium Star Bd +13°3224: Further Evidence of a Decline in the Period Decrease Rate

      • A. E. Lynas-Gray, D. Kilkenny
      Pages 117-123

  5. Cool Hydrogen Deficient Stars

    1. Front Matter

      Pages 125-125
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    2. The Chemical Composition of Cool Stars: II — The Hydrogen Deficient Stars

      • David L. Lambert
      Pages 127-150

    3. The RCB Stars and their Circumstellar Material

      • M. W. Feast
      Pages 151-166

    4. Polarimetric Observations of Hydrogen Deficient Stars

      • A. V. Raveendran, N. Kameswara Rao, M. R. Deshpande, U. C. Joshi, A. K. Kulshrestha
      Pages 167-171
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Keywords

About this book

The first helium star was discovered in 1942, the first scientific meeting on the subject, however, took place in 1985. The meeting was hence long overdue for, in the meantime, a substantial amount of material had been accumulated by a rather small, but active scientific community. Hence, it appeared necessary to review the field in order to define the subject, assess its present status and discuss future developments. Hydrogen deficiency is a widespread phenomenon, occurring in a large variety of stellar and nonstellar objects. It can be readily detected in B stars as these exhibit both hydrogen and helium lines, if the elements are present in appreciable amounts. It becomes less manifest in cool stars, where the temperature is too low to excite helium and where one has to devise indirect methods for proving hydrogen deficiency. Clearly, it was not possible to discuss the whole complex of hydrogen deficiency, i.e. in both stars and diffuse matter, but rather to concentrate on the issue of helium stars.

Editors and Affiliations

  • Institute for Theoretical Physics and Observatory, University of Kiel, Germany

    Kurt Hunger, Detlef Schönberner

  • Indian Institute of Astrophysics, Bangalore, India

    N. Kameswara Rao

Bibliographic Information

  • Book Title: Hydrogen Deficient Stars and Related Objects

  • Book Subtitle: Proceeding of the 87th Colloquium of the International Astronomical Union Held at Mysore, India, 10–15 Nevember 1985

  • Editors: Kurt Hunger, Detlef Schönberner, N. Kameswara Rao

  • Series Title: Astrophysics and Space Science Library

  • DOI: https://doi.org/10.1007/978-94-009-4744-3

  • Publisher: Springer Dordrecht

  • eBook Packages: Springer Book Archive

  • Copyright Information: D. Reidel Publishing Company, Dordrecht, Holland 1986

  • Hardcover ISBN: 978-90-277-2326-0Due: 31 October 1986

  • Softcover ISBN: 978-94-010-8608-0Published: 13 October 2011

  • eBook ISBN: 978-94-009-4744-3Published: 06 December 2012

  • Series ISSN: 0067-0057

  • Series E-ISSN: 2214-7985

  • Edition Number: 1

  • Number of Pages: 528

  • Topics: Astronomy, Observations and Techniques

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