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Early-time spectroscopic observations of SN 1998aq in NGC 3982

J. Vinko·L. L. Kiss·J. Thomson·G. Furesz·W. Lu·G. Kaszas·Z. Balog
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Abstract

Medium resolution spectroscopic observations of SN 1998aq made in April-May, 1998, are presented. We confirm its Type Ia classification based on the prominent Si II 6355 A line and other features similar to SNe Ia. No significant sign of hydrogen Balmer-alpha line was seen in high-resolution spectra taken at 8 days before maximum. Preliminary estimate of reddening and distance modulus, based on the correlation between the line depth ratio of two Si II features around 6000 A and BVRI light curves of Type Ia SNe, is presented. Moreover, H-alpha emission from the core of the Seyfert 2 type host galaxy NGC 3982 has also been detected.

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J. Vinko, L. L. Kiss, J. Thomson, G. Furesz, W. Lu, G. Kaszas, Z. Balog. 1999-03-09. Early-time spectroscopic observations of SN 1998aq in NGC 3982. https://arxiv.org/abs/astro-ph/9903138

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