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HST Spectroscopy of the Orion Nebula

Published online by Cambridge University Press:  25 May 2016

R.H. Rubin ,
G.J. Ferland ,
R.J. Dufour ,
D.K. Walter ,
C.R. O'dell ,
J.A. Baldwin ,
J.J. Hester  and
P.G. Martin
R.H. Rubin
Affiliation:
NASA/Ames
G.J. Ferland
Affiliation:
University of Kentucky
R.J. Dufour
Affiliation:
Rice University
D.K. Walter
Affiliation:
Rice University
C.R. O'dell
Affiliation:
Rice University
J.A. Baldwin
Affiliation:
CTIO
J.J. Hester
Affiliation:
Arizona State University
P.G. Martin
Affiliation:
University of Toronto

Abstract

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From our recent Faint Object Spectrograph (FOS) observations of the Orion Nebula obtained with the Hubble Space Telescope, we present preliminary results that address the nitrogen abundance. The list of detected lines and their identifications included the first measurement of the N II] 2142 Å line in an H II region. This measurement in conjunction with [O II] 2471 Å permits a new assessment of the important N/O ratio in Orion. Unfortunately, the measurements of the N III] 1747-54 Å multiplet and the O III] 1660-66 Å multiplet have poor signal-to-noise, precluding another independent derivation of N/O.

Type
Chapter 7: How are we to Understand the Small Scale Structure of the ISM?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 629 - 632
Copyright
Copyright © Kluwer 1996 

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