Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1156l&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 104, no. 3, Sept. 1992, p. 1156-1160. Research supported by Aerospace Corp.
Astronomy and Astrophysics
Astronomy
8
Doppler Effect, Heavy Elements, Infrared Spectra, Spectral Line Width, Stellar Spectra, Supernovae, Absorption Spectra, Infrared Photometry, Near Infrared Radiation
Scientific paper
Near-infrared (0.9-1.35-micron) spectra of type Ia supernovae 1989B, 1989M, 1990M, 1990N, and 1991T obtained 22, 12, 15, -5, and 0 ds, respectively, after maximum B brightness are reported. Two spectra taken after B maximum (1989B and 1989M) showed the unidentified J-band absorption, though with varying shapes and depths. Two spectra taken at, and before MAXIMA do not show the absorption. The dereddened slopes of the continua between 0.9 and 1.35 micron exceed that of a Rayleigh-Jeans continuum for all but one SN. From the present data and from optical observations, it appears that the Ca II IR absorption lines first appear at about the time of B maximum. This suggests that the physical conditions necessary for their formation may also be connected with the formation of the J-band absorption. Although there are some similarities, the near-IR spectra of type Ia supernovae are not homogeneous.
Erwin Peter
Lynch David K.
Puetter Richard C.
Rossano George S.
Rudy Richard J.
No associations
LandOfFree
0.9-1.35-micron spectra of five type IA supernovae near maximum light does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with 0.9-1.35-micron spectra of five type IA supernovae near maximum light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 0.9-1.35-micron spectra of five type IA supernovae near maximum light will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1765633