2008ApJ...675..626W


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST02:03:30

2008ApJ...675..626W - Astrophys. J., 675, 626-643 (2008/March-1)

Optical and near-infrared observations of the highly reddened, rapidly expanding type Ia supernova SN 2006X in M100.

WANG X., LI W., FILIPPENKO A.V., KRISCIUNAS K., SUNTZEFF N.B., LI J., ZHANG T., DENG J., FOLEY R.J., GANESHALINGAM M., LI T., LOU Y., QIU Y., SHANG R., SILVERMAN J.M., ZHANG S. and ZHANG Y.

Abstract (from CDS):

We present extensive optical (UBVRI), near-infrared (JK) light curves and optical spectroscopy of the Type Ia supernova SN 2006X in the nearby galaxy NGC 4321 (M100). Our observations suggest that either SN 2006X has an intrinsically peculiar color evolution or it is highly reddened [E(B-V)host=1.42±0.04 mag] with RV=1.48±0.06, much lower than the canonical value of 3.1 for the average Galactic dust. SN 2006X also has one of the highest expansion velocities ever published for an SN Ia. Compared with the other SNe Ia we analyzed, SN 2006X has a broader light curve in the U band, a more prominent bump/shoulder feature in the V and R bands, a more pronounced secondary maximum in the I and NIR bands, and a remarkably smaller late-time decline rate in the B band. The B-V color evolution shows an obvious deviation from the Lira-Phillips relation at 1-3 months after maximum brightness. At early times, optical spectra of SN 2006X displayed strong, high-velocity features of both intermediate-mass elements (Si, Ca, and S) and iron peak elements, while at late times they showed a relatively blue continuum, consistent with the blue U-B and B-V colors at similar epochs. A light echo and/or the interaction of the SN ejecta and its circumstellar material may provide a plausible explanation for its late-time photometric and spectroscopic behavior. Using the Cepheid distance of M100, we derive a Hubble constant of 72.8±8.2 km/s/Mpc (statistical) from the normalized dereddened luminosity of SN 2006X. We briefly discuss whether abnormal dust is a universal signature for all SNe Ia and whether the most rapidly expanding objects form a subclass with distinct photometric and spectroscopic properties.

Abstract Copyright:

Journal keyword(s): Cosmology: Distance Scale - ISM: Dust, Extinction - Galaxies: Individual: NGC Number: NGC 4321 - supernovae: individual (SN 2006X)

CDS comments: Ref. stars in Fig.1 and Table 2 are GSC or USNO-B1.0 stars in SIMBAD. Table 9: NGC 4419 is a misprint for NGC 2441

Simbad objects: 45

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Number of rows : 45

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SN 2000cx SN* 01 24 46.19 +09 30 31.3   13.3       SNIap 195 1
2 SN 2004dt SN* 02 02 12.342 -00 06 02.10   15.33       SNIa 119 1
3 SN 2001el SN* 03 44 30.60 -44 38 23.4   12.81       SNIa 240 1
4 SN 1995E SN* 07 51 56.75 +73 00 34.6   16.81 15.9     SNIa 106 1
5 UGC 4195 GiG 08 05 06.9198296588 +66 46 58.672012795   14.6       ~ 55 0
6 SN 2000ce SN* 08 05 09.45 +66 47 15.2   17.24       SNIa 55 1
7 NGC 3169 GiP 10 14 15.099 +03 27 58.03   13.46 12.41     ~ 332 1
8 SN 2003cg SN* 10 14 15.97 +03 28 02.5   15.94       SNIa 122 1
9 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SNIa 276 1
10 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 296 1
11 GSPC S264-D * 10 47 24.1 -44 34 05           ~ 11 0
12 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 341 1
13 LP 732-94 LM* 11 21 49.1720839605 -13 13 08.728765179     19.57     M8.5V 123 0
14 SN 1989A SN* 11 27 59.02 +29 30 21.4   14.10       SNIa 46 1
15 SN 1998aq SN* 11 56 25.87 +55 07 43.2   12.31 14.9     SNIa 168 1
16 USNO-B1.0 1059-00209855 * 12 22 41.8949279841 +15 54 11.758598680   13.4   13.0   ~ 1 0
17 BPS BS 16470-0082 * 12 22 42.5072632982 +15 48 45.565528800   14.79 14.14 14.29   ~ 2 0
18 SN 1901B SN* 12 22 47.6 +15 49 25   15.6 12.8     SNI 28 1
19 GSC 01445-02472 * 12 22 50.3842270285 +15 43 20.667511134   15.413       ~ 1 0
20 GSC 01445-02383 * 12 22 50.3965457748 +15 50 56.972511443   14.8   15.12   ~ 1 0
21 GSC 01445-01959 * 12 22 51.8325169236 +15 52 12.524678896   14.8   14.79   ~ 1 0
22 SN 2006X SN* 12 22 53.93 +15 48 32.0     15.3     SNIa 280 1
23 2MASS J12225397+1548399 * 12 22 53.98 +15 48 40.0   19.9       ~ 1 0
24 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1651 2
25 SN 1914A SN* 12 22 57.0 +15 47 30   15.7 15.7     ~ 24 1
26 SN 1979C SN* 12 22 58.58 +15 47 52.7   11.6       SNIIL 549 1
27 SN 1959E SN* 12 22 58.90 +15 49 01.1   17.5 17.5     SNI 26 1
28 GSC 01445-02507 * 12 23 03.9357851982 +15 47 44.896016263   14.82 14.17 14.19   ~ 1 0
29 USNO-B1.0 1057-00219838 * 12 23 07.5161564209 +15 44 11.412109392   16.1   15.8   ~ 1 0
30 USNO-B1.0 1057-00219848 * 12 23 11.8953299852 +15 45 05.119310668   16.9   16.7   ~ 1 0
31 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5841 0
32 SN 1984A SN* 12 26 55.73 +15 03 17.1   12.40 12.20     SNIa 130 1
33 NGC 4419 LIN 12 26 56.433 +15 02 50.72 12.42 12.08 11.16     ~ 368 1
34 SN 1999cl SN* 12 31 56.01 +14 25 35.3   14.92       SNIa 107 1
35 M 88 Sy2 12 31 59.216 +14 25 13.48   14.33 13.18     ~ 730 1
36 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 520 1
37 SN 1997bp SN* 12 46 53.75 -11 38 33.2   14.15 13.79     SNIapec 76 1
38 SN 1983G SN* 12 52 20.90 -01 12 12.0   12.97       SNIa 104 1
39 NGC 5005 GiP 13 10 56.312 +37 03 32.19   14.67 13.67     ~ 498 2
40 SN 1996ai SN* 13 10 58.13 +37 03 35.4   16.94 15.0     SNIa 50 1
41 SN 2002dj SN* 13 13 00.34 -19 31 08.7     17.0     SNIa 100 1
42 SN 1996X SN* 13 18 01.13 -26 50 45.3   12.99 13.00     SNIa 175 1
43 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SNIa 311 1
44 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SNIa 235 1
45 SN 2002er SN* 17 11 29.88 +07 59 44.8   14.25       SNIa 119 1

    Equat.    Gal    SGal    Ecl

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2020.08.09-02:03:30

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