1999AJ....117.1175S

Query : 1999AJ....117.1175S

1999AJ....117.1175S - Astron. J., 117, 1175-1184 (1999/March-0)

Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the Hubble constant.

SUNTZEFF N.B., PHILLIPS M.M., COVARRUBIAS R., NAVARRETE M., PEREZ J.J., GUERRA A., ACEVEDO M.T., DOYLE L.R., HARRISON T., KANE S., LONG K.S., MAZA J., MILLER S., PIATTI A.E., CLARIA J.J., AHUMADA A.V., PRITZL B. and WINKLER P.F.

Abstract (from CDS):

We present the UBV(RI)KC light curves of the Type Ia supernova SN 1998bu, which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group that has a Cepheid-based distance. Our photometry allows us to calculate the absolute magnitude and reddening of this supernova. These data, when combined with measurements of the four other well-observed supernovae with Cepheid-based distances, allow us to calculate the Hubble constant with respect to the Hubble flow defined by the distant Calán/Tololo Type Ia sample. We find a Hubble constant of 63.9±2.2(internal)±3.5(external) km.s–1.Mpc–1, consistent with most previous estimates based on Type Ia supernovae. We note that the two well-observed Type Ia supernovae in Fornax, if placed at the Cepheid distance to the possible Fornax spiral NGC 1365, are apparently too faint with respect to the Calán/Tololo sample calibrated with the five Type Ia supernovae with Cepheid distances to the host galaxies.

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Journal keyword(s): Cosmology: Distance Scale - Galaxies: Individual: NGC Number: NGC 3368 - Stars: Supernovae: General - supernovae: individual (SN 1998bu)

Nomenclature: Table 2: [SPC99] NN (Nos 1-15).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 23

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Number of rows : 23
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 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
2 SN 1980N SN* 03 23 00.319 -37 12 49.90   12.5 12.37     SNIa 159 1
3 NGC 1326A AG? 03 25 08.50 -36 21 50.2   13.80   12.91 13.7 ~ 103 0
4 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
5 SN 1992A SN* 03 36 27.41 -34 57 31.4   12.56 12.50     SNIa 409 1
6 NGC 1380 Sy2 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 460 1
7 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
8 NGC 1425 EmG 03 42 11.4831633240 -29 53 36.186684252   11.61   11.6 10.9 ~ 209 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
11 NAME M 96 Group GrG 10 46 45 +11 49.1           ~ 330 0
12 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 862 1
13 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 328 1
14 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 372 1
15 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
16 NGC 4536 H2G 12 34 27.12887 +02 11 16.3680 11.14 11.16 10.55 17.393   ~ 913 3
17 SN 1981B SN* 12 34 29.57 +02 11 59.3   11.74       SNIa 416 1
18 NGC 4639 Sy1 12 42 52.3785000336 +13 15 26.706153600   13.62 12.72     ~ 642 0
19 SN 1990N SN* 12 42 56.68 +13 15 23.4   12.69 12.62     SNIa 406 1
20 IC 4182 BiC 13 05 48.7478324064 +37 36 12.965157684   11.86   11.40   ~ 344 1
21 SN 1937C SN* 13 05 53.2 +37 36 07   8.80 8.77     SNIa 203 1
22 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1
23 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4

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