NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Searching for Radial Velocity Variations in eta CarinaeA hot companion of eta Carinae has been detected using high resolution spectra (905 - 1180 A) obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite (see poster by Sonneborn et al.). Analysis of the far-UV spectrum shows that eta Car B is a luminous hot star. The N II 1084-86 emission feature indicates that the star may be nitrogen rich. The FUV continuum and the S IV 1073 P-Cygni wind line suggest that the effective temperature of eta Car B is at least 25,000 K. FUV spectra of eta Carinae were obtained with the FUSE satellite at 9 epochs between 2000 February and 2005 July. The data consists of 12 observations taken with the LWRS aperture (30x30 arcsec), three with the HIRS aperture (1.25x20 arcsec), and one MRDS aperture (4x20 arcsec). In this paper we discuss the analysis of these spectra to search for radial velocity variations associated with the 5.54-year binary orbit of Eta Car AB.
Document ID
20060012284
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Iping, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sonneborn, G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gull, T. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ivarsson, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nielsen, K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Publication Information
Publication: Bullein of the American Astronomical Society
Volume: 37
Issue: 4
Subject Category
Astrophysics
Meeting Information
Meeting: AAS 207th Meeting: Recent Discoveries in the Far UV
Location: Washington, DC
Country: United States
Start Date: January 8, 2006
End Date: January 12, 2006
Sponsors: American Astronomical Society
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available