IUE observations of the quasar 3C 273

Journal Article · Fri Jun 15 04:00:00 EDT 1979 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182977· OSTI ID:5983096

Boggess, A; Daltabuit, E; Torres-Peimbert, S; Estabrook, F B; Wahlquist, H D; Lane, A L; Green, R; Oke, J B; Schmidt, M; Zimmerman, B; Morton, D C; Roeder, R C

IUE observations indicate that the spectrum of 3C 273 is similar to that of other large-redshift quasars. The continuum in the visual and UV can be described roughly by a power law of the form f/sub v/proportional..nu../sup -0.43/. There is a large excess of flux in the range 2400 A to 5300 A, which encompasses the Balmer jump region but which does not appear to be explainable by Balmer emission. The intensity ratio of L..cap alpha.. to H..beta.. is 5.5, in agreement with other measures and a factor 6 smaller than the recombination value. The only absorption lines in the spectrum are due to our Galaxy. There is marginal evidence for a depression of the continuum shortward of the L..cap alpha.. emission line, but the errors are too large to warrant any conclusion that 3C 273 has a rich absorption lines of Fe II leads to the conclusion that resonance fluorescence probably produces the visual Fe II emission lines.

• Research Organization: Laboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center
• OSTI ID: 5983096
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 230:3; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC IONS
BALMER LINES
CHARGED PARTICLES
COSMIC RADIO SOURCES
EMISSION SPECTRA
IONS
IRON IONS
LINE WIDTHS
LYMAN LINES
QUASARS
SPECTRA
ULTRAVIOLET SPECTRA