SIMBAD references

2007MNRAS.377.1531P - Mon. Not. R. Astron. Soc., 377, 1531-1552 (2007/June-1)

ESC and KAIT observations of the transitional type Ia SN 2004eo.

PASTORELLO A., MAZZALI P.A., PIGNATA G., BENETTI S., CAPPELLARO E., FILIPPENKO A.V., LI W., MEIKLE W.P.S., ARKHAROV A.A., BLANC G., BUFANO F., DEREKAS A., DOLCI M., ELIAS-ROSA N., FOLEY R.J., GANESHALINGAM M., HARUTYUNYAN A., KISS L.L., KOTAK R., LARIONOV V.M., LUCEY J.R., NAPOLEONE N., NAVASARDYAN H., PATAT F., RICH J., RYDER S.D., SALVO M., SCHMIDT B.P., STANISHEV V., SZEKELY P., TAUBENBERGER S., TEMPORIN S., TURATTO M. and HILLEBRANDT W.

Abstract (from CDS):

We present optical and infrared observations of the unusual Type Ia supernova (SN) 2004eo. The light curves and spectra closely resemble those of the prototypical SN 1992A, and the luminosity at maximum (M_B_= -19.08) is close to the average for a Type Ia supernova (SN Ia). However, the ejected 56Ni mass derived by modelling the bolometric light curve (about 0.45M☉) lies near the lower limit of the 56Ni mass distribution observed in normal SNe Ia. Accordingly, SN 2004eo shows a relatively rapid post-maximum decline in the light curve [Δm15(B)true= 1.46], small expansion velocities in the ejecta and a depth ratio Siii λ5972/Siii λ6355 similar to that of SN 1992A. The physical properties of SN 2004eo cause it to fall very close to the boundary between the faint, low-velocity gradient and high-velocity gradient subgroups proposed by Benetti et al. Similar behaviour is seen in a few other SNe Ia. Thus, there may in fact exist a few SNe Ia with intermediate physical properties.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): supernovae: general - supernovae: individual: SN 2004eo - supernovae: individual: SN 1992A - galaxies: individual: NGC 6928

VizieR on-line data: <Available at CDS (J/MNRAS/377/1531): table3.dat table4.dat table5.dat table6.dat table7.dat table8.dat>

Nomenclature: Fig.1, Table 3: [PMP2007] NN (Nos 1-20).

Simbad objects: 28

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