We present the first Fourier Transform Spectrograph near-IR spectrum (0.95-2.5 mu m) of eta Car observed at CFHT in January 1987 with a resolution of 40-100 km s(-1). We have identified lines of H I (Paschen, Brackett series), He I, Fe II, [Fe III, [N I] with complex structures. At the time of these observations eta Car was in a low excitation phase characterized by a general weakening of the hydrogen lines, and with the He I lambda 1082.9 nm line much weaker than in 1990-91.
ALTAMORE A, MAILLARD JP, & VIOTTI R (1994). FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE. ASTRONOMY & ASTROPHYSICS, 292(1), 208-212.
Titolo: | FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE | |
Autori: | ||
Data di pubblicazione: | 1994 | |
Rivista: | ||
Citazione: | ALTAMORE A, MAILLARD JP, & VIOTTI R (1994). FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE. ASTRONOMY & ASTROPHYSICS, 292(1), 208-212. | |
Abstract: | We present the first Fourier Transform Spectrograph near-IR spectrum (0.95-2.5 mu m) of eta Car observed at CFHT in January 1987 with a resolution of 40-100 km s(-1). We have identified lines of H I (Paschen, Brackett series), He I, Fe II, [Fe III, [N I] with complex structures. At the time of these observations eta Car was in a low excitation phase characterized by a general weakening of the hydrogen lines, and with the He I lambda 1082.9 nm line much weaker than in 1990-91. | |
Handle: | http://hdl.handle.net/11590/138437 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |