2007MNRAS.377.1531P

Query : 2007MNRAS.377.1531P

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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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 2000cx SN* 01 24 46.150 +09 30 30.89           SNIap 227 1
2 SN 2004dt SN* 02 02 12.770 -00 05 51.50           SNIa 150 1
3 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
4 SN 2001el SN* 03 44 30.60 -44 38 23.4   12.81       SNIa 281 1
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 307 1
7 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 325 1
8 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
9 SN 1998aq SN* 11 56 25.87 +55 07 43.2   12.31 14.9     SNIa 197 1
10 SN 2004aw SN* 11 57 50.24 +25 15 55.1   18.06       SNIc 209 1
11 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
12 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 559 1
13 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
14 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
15 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 198 1
16 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SNIa 374 1
17 SN 1991M SN* 15 58 34.82 +17 27 28.7     14.55     SNIa 66 1
18 SN 1999ac SN* 16 07 15.01 +07 58 20.4   14.34       SNIap 144 1
19 SN 2002er SN* 17 11 29.88 +07 59 44.8   14.25       SNIa 144 1
20 HD 181277 * 19 17 34.5536690424 +48 06 02.883433140   8.68 8.60     A0 16 0
21 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 267 0
22 HD 194012 PM* 20 22 52.3692228912 +14 33 03.951291672   6.635 6.152     F7V 124 1
23 NGC 6928 GiP 20 32 50.222 +09 55 35.15   13.7       ~ 82 0
24 SN 2004eo SN* 20 32 54.19 +09 55 42.7   15.07 17.8     SNIa 225 1
25 BD+28 4211 HS* 21 51 11.0221915656 +28 51 50.367627468 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 837 0
26 BD+17 4708 SB* 22 11 31.3756832854 +18 05 34.177983548 9.73 9.91 9.46 9.03 8.70 sdF8 580 0
27 SN 1999ee SN* 22 16 09.40 -36 50 31.5   14.85       SNIa 201 1
28 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 673 1

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