Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-26T03:56:03.265Z Has data issue: false hasContentIssue false
  • English
  • Français

A New Objective Prism Catalogue of OB and Supergiant B, A, F and G Stars in the Magellanic Clouds

Published online by Cambridge University Press:  12 April 2016

A. G. Davis Philip  and
N. Sanduleak
A. G. Davis Philip
Affiliation:
Dudley Observatory and Union College
N. Sanduleak
Affiliation:
Warner and Swasey Observatory

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The Michigan Curtis Schmidt telescope at Cerro Tololo Inter-American Observatory has been used with the “thin” prism (Blanco 1974) to survey the Large and Small Magellanic Clouds. Four plates, covering approximately 90 square degrees, and three plates, covering approximately 70 square degrees, were taken of the Large and Small Magellanic Clouds respectively. One hour exposures on nitrogen baked, IIIa-J plates were obtained. The limiting magnitude of the plates is V = 16 mag. At the dispersion of 1360 Å/mm OB stars can be recognized by their long uv extension, in which no sign of a Balmer discontinuity can be seen. The supergiants can be recognized by the appearance of a Balmer discontinuity and classified into temperature types by the strength of the hydrogen lines.

Type
III Criteria and Applications Outside the MK Domain
Information
International Astronomical Union Colloquium , Volume 47: Spectral Classification of the Future , 1979 , pp. 155 - 157
Copyright
Copyright © Vatican Observatory 1979

References

Blanco, V. M. (1974). Publ. Astron. Soc. Pacific, 86, 841.CrossRefGoogle Scholar
Sanduleak, N. (1969). Contr. of the Cerro To lo lo Inter-American Obs., No. 89.Google Scholar