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Title: Ultraviolet Fe VII absorption and Fe II emission lines of central stars of planetary nebulae

Abstract

The SWP camera of the IUE satellite was used in the high-dispersion mode to search for Fe VII absorption and Fe II high-excitation emission lines in five additional very hot central stars of planetary nebulae. Some of the Fe VII lines were detected at 1208, 1239, and 1332 A in all the objects of this program, LT 5, NGC 6058, NGC 7094, A43, and Lo 1 (= K1-26), as well as some of the Fe II emission lines at A 1360, 1776, 1869, 1881, 1884, and 1975 A. Two additional objects, NGC 2867 and He 2-131, were obtained from the IUE archive and were evaluated. The present study probably exhausts the list of candidates that are sufficiently bright and hot to be reached with the high-dispersion mode of the IUE. 17 refs.

Authors:
; ;  [1]
  1. (NASA, Goddard Space Flight Center, Greenbelt, MD (United States) Catholic University of America, Washington, DC (United States) Computer Sciences Corp., Greenbelt, MD (United States))
Publication Date:
OSTI Identifier:
5184742
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; (United States); Journal Volume: 377
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; PLANETARY NEBULAE; ULTRAVIOLET SPECTRA; ABSORPTION SPECTRA; EMISSION SPECTRA; IRON; STARS; ELEMENTS; METALS; NEBULAE; SPECTRA; TRANSITION ELEMENTS; 640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources

Citation Formats

Cheng, Kwang-Ping, Feibelman, W.A., and Bruhweiler, F.C.. Ultraviolet Fe VII absorption and Fe II emission lines of central stars of planetary nebulae. United States: N. p., 1991. Web. doi:10.1086/170350.
Cheng, Kwang-Ping, Feibelman, W.A., & Bruhweiler, F.C.. Ultraviolet Fe VII absorption and Fe II emission lines of central stars of planetary nebulae. United States. doi:10.1086/170350.
Cheng, Kwang-Ping, Feibelman, W.A., and Bruhweiler, F.C.. Thu . "Ultraviolet Fe VII absorption and Fe II emission lines of central stars of planetary nebulae". United States. doi:10.1086/170350.
@article{osti_5184742,
title = {Ultraviolet Fe VII absorption and Fe II emission lines of central stars of planetary nebulae},
author = {Cheng, Kwang-Ping and Feibelman, W.A. and Bruhweiler, F.C.},
abstractNote = {The SWP camera of the IUE satellite was used in the high-dispersion mode to search for Fe VII absorption and Fe II high-excitation emission lines in five additional very hot central stars of planetary nebulae. Some of the Fe VII lines were detected at 1208, 1239, and 1332 A in all the objects of this program, LT 5, NGC 6058, NGC 7094, A43, and Lo 1 (= K1-26), as well as some of the Fe II emission lines at A 1360, 1776, 1869, 1881, 1884, and 1975 A. Two additional objects, NGC 2867 and He 2-131, were obtained from the IUE archive and were evaluated. The present study probably exhausts the list of candidates that are sufficiently bright and hot to be reached with the high-dispersion mode of the IUE. 17 refs.},
doi = {10.1086/170350},
journal = {Astrophysical Journal; (United States)},
number = ,
volume = 377,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1991},
month = {Thu Aug 01 00:00:00 EDT 1991}
}