2026ApJ...998..101P

Query : 2026ApJ...998..101P

2026ApJ...998..101P - Astrophys. J., 998, 101 (2026/February-2)

Carnegie Supernova Project: Fast-declining Type Ia Supernovae as Cosmological Distance Indicators.

PHILLIPS M.M., UDDIN S.A., BURNS C.R., SUNTZEFF N.B., ASHALL C., BARON E., GALBANY L., HOEFLICH P., HSIAO E.Y., MORRELL N., PERSSON S.E., STRITZINGER M., CONTRERAS C., FREEDMAN W.L., KRISCIUNAS K., KUMAR S., LU J., PIRO A.L. and SHAHBANDEH M.

Abstract (from CDS):

In this paper, the suitability of fast-declining Type Ia supernovae (SNe Ia) as cosmological standard candles is examined utilizing a “Hubble Flow” sample of 43 of these objects observed by the Carnegie Supernova Project (CSP). We confirm previous suggestions that fast-declining SNe Ia offer a viable method for estimating distances to early-type galaxies when the color-stretch parameter, sBV, is used as a measure of the light-curve shape. As a test, we employ the Tripp method, which models the absolute magnitude at maximum as a function of light-curve shape and color. We calibrate the sample using 12 distance moduli based on published infrared surface-brightness fluctuations to derive a value of the Hubble constant that is in close agreement with the value obtained for the full sample of CSP SNe Ia using the same methodology. We also develop a new and simple method of estimating the distances of fast decliners based only on their colors at maximum (and not light-curve shape) and find that it leads to similar results as with using the Tripp method. This “color” technique is a powerful tool that is unique to fast-declining SNe Ia. We show that the colors of the fast decliners at maximum light are strongly affected by photospheric temperature differences and not solely due to dust extinction, and provide a physical rationale for this effect.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Type Ia supernovae - Supernovae - Observational cosmology

Errata: erratum vol. 1000, art. 154 (2026)

Simbad objects: 126

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Number of rows : 126
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 2006gt SN* 00 56 17.30 -01 37 46.0     18.5     SNIap 67 1
2 2MASX J00561810-0137327 GiC 00 56 18.0787873392 -01 37 33.020230332           ~ 21 0
3 SN 2007mm SN* 01 05 46.67 -00 45 31.8           SNIa 26 1
4 Shk 35 GrG 01 05.8 -00 45           ~ 7 0
5 SN 2007ol SN* 01 37 23.696 -00 18 43.19           SNIa 36 1
6 2MASX J01372378-0018422 GiC 01 37 23.7806892358 -00 18 42.165865111         16.140 ~ 13 0
7 SN 2006ob SN* 01 51 48.132 +00 15 48.46           SNIa 68 1
8 Z 386-46 GiC 01 51 48.5114573904 +00 15 49.853514024   15.7       ~ 38 0
9 NGC 881 GiG 02 18 45.2635658088 -06 38 20.643101952 13.43 13.23 12.44     ~ 56 1
10 SN 2011hk SN* 02 18 45.81 -06 38 30.5           SNIap 15 1
11 iPTF 13ebh SN* 02 21 59.98 +33 16 13.7           SNIa 58 0
12 NGC 890 GiG 02 22 01.0021097064 +33 15 57.770822916   12.5 11.62     ~ 116 0
13 NGC 910 BiC 02 25 26.7924474768 +41 49 27.615017352   14.5       ~ 75 1
14 SN 2008hs SN* 02 25 29.62 +41 50 35.1           SNIa 35 1
15 SN 2008R SN* 03 03 53.70 -11 59 39.4     15.5     SNIa 44 1
16 NGC 1200 EmG 03 03 54.481 -11 59 30.67   13   11.42   ~ 59 0
17 LSQ 13dkp SN* 03 10 09.97 -36 37 44.9           SNIa 5 0
18 LEDA 132141 G 03 10 10.941 -36 38 01.71   16.21       ~ 11 0
19 Z 390-49 GiG 03 17 34.4903686416 -01 41 42.219674016   15.6       ~ 27 0
20 SN 2006gj SN* 03 17 35.80 -01 41 30.2     17.8     SNIa 50 1
21 NGC 1278 GiG 03 19 54.1310495136 +41 33 48.273592464   14.4 14.14     ~ 105 0
22 SN 2016ajf SN* 03 19 54.47 +41 33 53.5           SNIa 8 0
23 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
24 SN 2006mr SN* 03 22 42.84 -37 12 28.5     15.6     SNIap 78 1
25 NGC 1367 EmG 03 35 01.3451198496 -24 55 59.504904516   11.48   9.98 11.1 ~ 209 0
26 SN 2005ke SN* 03 35 04.35 -24 56 38.8     17.2     SNIap 162 1
27 SN 2007jh SN* 03 36 01.536 +01 06 12.11           SNIa 39 1
28 Z 391-14 G 03 36 01.5900205011 +01 06 17.135294122   15.4     14.800 ~ 31 0
29 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
30 SN 2007on SN* 03 38 50.90 -35 34 30.0       14.9   SNIa 153 1
31 SN 2011iv SN* 03 38 51.4 -35 35 32           SNIa-norm 96 1
32 NGC 1404 rG 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 787 1
33 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 229 0
34 IC 2060 EmG 04 17 53.3961060360 -56 36 58.546815840   14.32   12.91   ~ 25 0
35 SN 2014dn SN* 04 17 54.27 -56 36 45.2           SNIapec 7 1
36 NGC 1725 GiG 04 59 22.8951102336 -11 07 56.503905888   13   12.58   ~ 36 0
37 SN 2009F SN* 04 59 23.56 -11 07 50.1           SNIap 41 1
38 SN 2012he SN* 05 00 50.04 -38 39 11.3           SNIa 10 1
39 MCG-06-12-002 G 05 00 50.6165703600 -38 39 16.536280788   16.13       ~ 13 0
40 MCG-04-12-034 EmG 05 02 00.6928784808 -21 08 12.990852024   14.06   12.91   ~ 47 0
41 SN 2006hb SN* 05 02 01.28 -21 07 55.1     15.7     SNIa 54 1
42 LEDA 638291 G 05 10 05.6482740360 -36 18 39.140934768   16.70   15.43   ~ 6 0
43 LSQ 14gfb SN* 05 10 05.76 -36 18 43.5           SNIa 4 0
44 2MASX J05164149+0629376 GiG 05 16 41.5337442192 +06 29 37.621560516   15       ~ 14 0
45 LSQ 11pn SN* 05 16 41.54 +06 29 29.4           SNIa 8 0
46 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
47 2MASX J05583036-6333386 G 05 58 30.36627 -63 33 38.6570           ~ 3 0
48 OGLE 2013-SN-123 SN* 05 58 30.38 -63 33 38.3           SNIa 7 0
49 OGLE 2012-SN-40 SN* 06 07 01.6 +69 21 17           SNIa 6 0
50 2MASX J06070178-6921180 GiG 06 07 01.6844375496 -69 21 17.715064140   15.41   14.52   ~ 16 0
51 SN 2008O SN* 06 57 34.46 -45 48 44.3     17.0     SNIa 15 1
52 ESO 256-11 EmG 06 57 35.109 -45 48 43.03   13.56       ~ 25 1
53 SN 2007ax SN* 08 22 43.26 +22 33 16.9     17.2     SNIap 70 1
54 NGC 2577 GiP 08 22 43.4495600280 +22 33 11.142071640   13.8       ~ 133 0
55 Z 119-103 LIN 08 27 05.9618029776 +21 38 43.030642200   15.0       ~ 60 0
56 SN 2005mc SN* 08 27 06.36 +21 38 45.6     17     SNIa 58 1
57 SN 2008bi SN* 08 35 53.39 +00 42 23.1           SNIa 26 1
58 NGC 2618 AG? 08 35 53.5430063664 +00 42 25.606115604   13.9       ~ 47 0
59 SN 2004gs SN* 08 38 23.179 +17 37 39.79     17.1     SNIa 77 1
60 Z 89-58 LIN 08 38 23.8480757184 +17 37 52.791340476   14.9       ~ 46 0
61 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 307 1
62 LSQ 14ip SN* 09 44 20.20 +04 35 52.5           SNIa 5 0
63 LEDA 3092151 G 09 44 20.8475058192 +04 35 31.863764112           ~ 19 0
64 SN 2007al SN* 09 59 18.48 -19 28 25.8     16.6     SNIa 38 1
65 2MASX J09591870-1928233 GiG 09 59 18.7328613600 -19 28 23.298655980   16.35 14.17 15.12 12.79 ~ 15 0
66 2MASX J10091969+1459268 AG? 10 09 19.6917149448 +14 59 27.326213592           ~ 19 0
67 SN 2007ux SN* 10 09 19.98 +14 59 32.8     18.5     SNIa 44 1
68 SN 2008bd SN* 10 18 23.32 -13 06 11.2           SNIa 13 1
69 MCG-02-26-042 G 10 18 23.566 -13 06 15.84   15   12.90   ~ 16 0
70 SN 2007cv SN* 10 37 45.4 -27 04 57       15.3   SNIa 20 1
71 IC 259 7 GiG 10 37 47.3320133088 -27 04 52.576660812   12.75   11.08   ~ 111 0
72 SN 2008bt SN* 10 50 16.99 -12 06 31.5           SNIa 27 1
73 NGC 3404 EmG 10 50 17.9811573624 -12 06 31.142976300   14.49       ~ 45 0
74 NGC 3392 Sy1 10 51 03.0013512384 +65 46 53.585661468   16.83 16.11     ~ 51 0
75 SN 2010Y SN* 10 51 03.90 +65 46 47.0           SNIa-norm 41 1
76 Z 127-15 GiG 11 38 29.4636799752 +20 31 39.704385756   14.9       ~ 41 0
77 SN 2006bd SN* 11 38 29.59 +20 31 38.2     18.2     SNIap 40 1
78 SN 2012ij SN* 11 40 15.8 +17 27 22           SNIa-91bg 22 1
79 Z 97-50 GiG 11 40 16.0943486160 +17 27 26.114814540   14.6       ~ 40 0
80 Z 68-91 AG? 11 55 30.4919590680 +11 55 25.394550636   15.7       ~ 21 0
81 SN 2014ah SN* 11 55 30.83 +11 55 26.3           SNIa 9 1
82 SN 2014E SN* 12 03 31.29 +02 02 34.5           SNIa 13 1
83 Z 13-51 GiG 12 03 37.6204280520 +02 02 48.853014504   15.102   13.882   ~ 47 0
84 NGC 4070 LIN 12 04 11.2984701048 +20 24 35.375326776   14.3       ~ 89 0
85 SN 2005bl SN* 12 04 12.24 +20 24 24.6           SNIap 109 1
86 NAME KISS15m SN* 12 06 00.830 +20 36 18.40           SNIa 4 0
87 NGC 4098 EmG 12 06 03.5790875328 +20 36 29.033858772   14.5       ~ 52 0
88 NGC 4386 GiG 12 24 28.3881987336 +75 31 44.306606316   12.6       ~ 91 1
89 SN 2014bv SN* 12 24 30.98 +75 32 08.6           SNIa 11 1
90 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 612 1
91 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
92 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
93 SN 2007N SN* 12 49 01.25 -09 27 10.2     17.3     SNIap 49 1
94 MCG-01-33-012 GiG 12 49 01.5331269144 -09 27 25.112751408   15.5       ~ 39 0
95 2MASX J12571157-1724344 LIN 12 57 11.580 -17 24 34.47   13.50   12.56   ~ 62 2
96 SN 2011jn SN* 12 57 14.79 -17 24 00.5           SNIa-norm 8 1
97 LSQ 14jp SN* 12 57 21.50 -15 47 33.5           SNIa 7 0
98 2MASX J12572166-1547411 G 12 57 21.7032921120 -15 47 41.028494100   16.20   14.85   ~ 17 0
99 NGC 4866 LIN 12 59 27.0952921176 +14 10 16.382228232   11.9       ~ 220 0
100 ASASSN -15ga SN* 12 59 27.292 +14 10 15.79     15.6     SNIa 20 0
101 SN 2013bc SN* 13 10 21.31 -07 10 24.1           SNIa 7 1
102 IC 4209 GiG 13 10 22.4722308936 -07 10 14.723996880   14.5       ~ 29 0
103 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
104 PSN J13471211-2422171 SN* 13 47 12.0 -24 22 17           SNIa-norm 12 0
105 MCG-04-33-002 rG 13 47 12.1641137280 -24 22 22.583942508   14.23   12.89 12.82 ~ 43 0
106 CRTS CSS150214 J140955+170315 SN* 14 09 55.0 +17 03 15           SNIa 1 0
107 NGC 5490 GiG 14 09 57.330 +17 32 43.53   13.4 15.5     ~ 178 1
108 NGC 5839 GiG 15 05 27.4892848248 +01 38 05.284771152   13.9 12.19 11.67 10.72 ~ 113 0
109 SN 2015bp SN* 15 05 28.1 +01 38 06           SNIa-norm 39 0
110 Z 49-87 GiG 15 16 41.8158732600 +07 23 48.815166372   15.4       ~ 38 0
111 SN 2007ba SN* 15 16 42.629 +07 23 47.80           SNIap 63 1
112 iPTF 14aje SN* 15 25 12.070 -01 48 51.50           SNIa 7 0
113 Z 21-91 LIN 15 25 12.4093485888 -01 48 39.937648104   15.4       ~ 33 0
114 LEDA 160728 EmG 15 59 44.2920759768 -10 26 39.171978276   17.78   16.07   ~ 5 0
115 LSQ 14act SN* 15 59 44.65 -10 26 40.8           SNIa 4 0
116 IC 4745 Sy2 18 42 35.9516701248 -64 56 34.541322072   13.89   12.17 13.1 ~ 43 0
117 SN 2013ay SN* 18 42 37.86 -64 56 13.5           SNIa 8 1
118 SN 2006eq SN* 21 28 37.13 +01 13 41.2           SNIa 48 1
119 LEDA 1188501 G 21 28 37.6036552440 +01 13 48.609880716   17.46 16.90     ~ 16 0
120 2MASX J21352164+2656051 G 21 35 21.6846476208 +26 56 04.720123932           ~ 5 0
121 PTF 11ppn SN* 21 35 21.93 +26 56 04.7           SNIa 5 0
122 NGC 7410 Sy2 22 55 00.8670520224 -39 39 40.773846240   11.35 11.80 9.91   ~ 113 0
123 SN 2014ba SN* 22 55 01.97 -39 39 34.5           SNIapec 6 1
124 SN 2007hj SN* 23 01 47.89 +15 35 11.4     15.9     SNIa 59 1
125 NGC 7461 AG? 23 01 48.3342056808 +15 34 57.265786776   14.5       ~ 49 0
126 iPTF 13dym SN* 23 24 30.19 +14 39 04.0           SNIa 10 0

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