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, J.p., Viotti, R. (1994). FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE. ASTRONOMY & ASTROPHYSICS, 292(1), 208-212.

FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE

ALTAMORE, Aldo;
1994-01-01

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.
1994
Altamore, A., Maillard, J.p., Viotti, R. (1994). FOURIER-TRANSFORM SPECTROSCOPY AND NEAR-INFRARED VARIABILITY OF ETA-CARINAE. ASTRONOMY & ASTROPHYSICS, 292(1), 208-212.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/138437
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