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Record 7 of 396
The ultraviolet spectra of Alpha Aquilae and Alpha Canis Minoris
External Online Source: doi:10.1086/155062
Author and Affiliation:
Morton, D. C.(Princeton University, New Observatory, Princeton, N.J., United States)
Bruzual A., G.(California, University, Berkeley, Calif., United States)
Kurucz, R. L.(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass., United States)
Spinrad, H.(California Univ., Berkeley, CA, United States)
Abstract: Scans of Alpha Aql (A7 IV, V) and Alpha CMi (F5 IV-V) obtained with the Copernicus satellite spectrometer over the wavelength range from 2100 to 3200 A are presented along with a spectrum of the integrated solar disk over the same range procured during a calibrated rocket flight. About 1500 fairly strong absorption lines in the Alpha CMi spectrum between 2400 and 2961 A are identified by comparison with a solar atlas and by using a theoretical spectrum synthesized from a blanketed LTE model with an effective temperature of 6500 K and a surface gravity of 10,000 cm/sec per sec. The Mg II resonance doublet at 2795.528 and 2802.704 A is found to be present in all three stars together with a discontinuity at 2635 A due to Fe II, Fe I, Cr I, and Mn II. It is concluded that the Mg II resonance lines and the 2635-A continuum break would be the best spectral features for estimating the redshift of a galaxy observed at low resolution provided the redshift is not less than about 0.75.
Publication Date: Mar 01, 1977
Document ID:
19770043282
(Acquired Dec 01, 1995)
Accession Number: 77A26134
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal; vol. 212
Publisher Information: United States
Contract/Grant/Task Num: NAS5-1810; NGR-05-003-587
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Berkeley, CA, United States
Harvard Coll. Observatory; Cambridge, MA, United States
Princeton Univ. Observatory; NJ, United States
Smithsonian Astrophysical Observatory; Cambridge, MA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BINARY STARS; SATELLITE OBSERVATION; SPACEBORNE ASTRONOMY; STELLAR SPECTRA; ULTRAVIOLET SPECTRA; ABSORPTION SPECTRA; ASTRONOMICAL MODELS; OAO 3; RED SHIFT; ROCKET FLIGHT; STELLAR SPECTROPHOTOMETRY
Imprint And Other Notes: Astrophysical Journal, Part 1, vol. 212, Mar. 1, 1977, p. 438-445. Research supported by the Consejo Nacional de Investigaciones Cientificas y Tecnologicas of Venezuela;
Miscellaneous Notes: Mar. 1, 1977, p. 438-445. Research supported by the Consejo Nacional de Investigaciones Cientificas y Tecnologicas of Venezuela
Availability Source: Other Sources
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