A. Altamore, Istituto Osservatorio Astronomico Universita' di Roma; R. Viotti, Laboratorio di Astrofisica Spaziale, Frascati; and G. B. Baratta, Osservatorio Astronomico di Roma, telex: "Nova Cyg 1978 was observed on Sept. 12.0 and 14.0 UT with the Schmidt telescope of the Rome Astronomical Observatory at Campo Imperatore. Several objective-prism spectrograms were obtained on IIa-O and I-N emulsions. The Sept. 12 spectrograms are overexposed, and only a few features are detectable: Balmer H10 and H11 in emission, Ca II 3933 A, 3968 A and a strong structure at 3920 A (probably Mg I 3838 A) in absorption. The Sept. 14 spectrum shows broad Balmer emission lines from H-alpha to H11. Fe II blends (4450-4620, 4210-4310, 4140-4190 A) are strong in emission. In absorption there are present: Ca II 3933 A, 3968 A with a violet shift of about 15 A; Ca I 4227 A and the probable Mg I 3838 A. The ultraviolet continuum is strong."
Altamore, A., Viotti, R., Baratta, G.B. (1978). Nova Cygni 1978. CIRCULAR - CENTRAL BUREAU FOR ASTRONOMICAL TELEGRAMS, INTERNATIONAL ASTRONOMICAL UNION, 3270(3270).
Nova Cygni 1978
ALTAMORE, Aldo;
1978-01-01
Abstract
A. Altamore, Istituto Osservatorio Astronomico Universita' di Roma; R. Viotti, Laboratorio di Astrofisica Spaziale, Frascati; and G. B. Baratta, Osservatorio Astronomico di Roma, telex: "Nova Cyg 1978 was observed on Sept. 12.0 and 14.0 UT with the Schmidt telescope of the Rome Astronomical Observatory at Campo Imperatore. Several objective-prism spectrograms were obtained on IIa-O and I-N emulsions. The Sept. 12 spectrograms are overexposed, and only a few features are detectable: Balmer H10 and H11 in emission, Ca II 3933 A, 3968 A and a strong structure at 3920 A (probably Mg I 3838 A) in absorption. The Sept. 14 spectrum shows broad Balmer emission lines from H-alpha to H11. Fe II blends (4450-4620, 4210-4310, 4140-4190 A) are strong in emission. In absorption there are present: Ca II 3933 A, 3968 A with a violet shift of about 15 A; Ca I 4227 A and the probable Mg I 3838 A. The ultraviolet continuum is strong."I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
