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Title:
Early-time spectroscopic observations of SN 1998aq in NGC 3982
Authors:
Vinkó, J.; Kiss, L. L.; Thomson, J.; Furész, G.; Lu, W.; Kaszás, G.; Balog, Z.
Affiliation:
AA(Department of Optics and Quantum Electronics, JATE University, Szeged, POB 406, H-6701 Hungary; Research Group on Laser Physics of the Hungarian Academy of Sciences), AB(Department of Experimental Physics, JATE University, Szeged, Dóm tér 9. H-6720 Hungary), AC(David Dunlap Observatory, University of Toronto, Box 360, Richmond Hill, Ontario L4C 4Y6, Canada), AD(Department of Optics and Quantum Electronics, JATE University, Szeged, POB 406, H-6701 Hungary), AE(David Dunlap Observatory, University of Toronto, Box 360, Richmond Hill, Ontario L4C 4Y6, Canada), AF(Department of Optics and Quantum Electronics, JATE University, Szeged, POB 406, H-6701 Hungary), AG(Department of Optics and Quantum Electronics, JATE University, Szeged, POB 406, H-6701 Hungary)
Publication:
Astronomy and Astrophysics, v.345, p.592-596 (1999) (A&A Homepage)
Publication Date:
05/1999
Origin:
A&A
Astronomy Keywords:
GALAXIES: SEYFERT, STARS: SUPERNOVAE: INDIVIDUAL: SN 1998AQ, TECHNIQUES: SPECTROSCOPIC
Bibliographic Code:
1999A&A...345..592V

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 lambda 6355 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 Angstroms and BVRI light curves of Type Ia SNe (Riess et al., \cite{riess2}), is presented. Moreover, Hα emission from the core of the Seyfert 2 type host galaxy NGC 3982 has also been detected.

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