2025ApJ...982..110H

Query : 2025ApJ...982..110H

2025ApJ...982..110H - Astrophys. J., 982, 110 (2025/April-1)

An Agnostic Approach to Building Empirical Type Ia Supernova Light Curves: Evidence for Intrinsic Chromatic Flux Variation Using Nearby Supernova Factory Data.

HAND J., KIM A.G., ALDERING G., ANTILOGUS P., ARAGON C., BAILEY S., BALTAY C., BONGARD S., BOONE K., BUTON C., COPIN Y., DIXON S., FOUCHEZ D., GANGLER E., GUPTA R., HAYDEN B., HILLEBRANDT W., KARMEN M., KOWALSKI M., KUSTERS D., LEGET P.-F., MONDON F., NORDIN J., PAIN R., PECONTAL E., PEREIRA R., PERLMUTTER S., PONDER K.A., RABINOWITZ D., RIGAULT M., RUBIN D., RUNGE K., SAUNDERS C., SUZUKI N., TAO C., TAUBENBERGER S., THOMAS R.C., VINCENZI M. (The Nearby Supernova Factory)

Abstract (from CDS):

We present a new empirical Type Ia supernova (SN Ia) model with three chromatic flux variation templates: one phase dependent and two phase independent. No underlying dust extinction model or patterns of intrinsic variability are assumed. Implemented with Stan and trained using spectrally binned Nearby Supernova Factory spectrophotometry, we examine this model's 2D, phase-independent flux variation space using two motivated basis representations. In both, the first phase-independent template captures variation that appears dust-like, while the second captures a combination of effectively intrinsic variability and second-order dust-like effects. We find that ≈13% of the modeled phase-independent flux variance is not dust-like. Previous empirical SN Ia models either assume an effective dust extinction recipe in their architecture, or only allow for a single mode of phase-independent variation. The presented results demonstrate such an approach may be insufficient, because it could “leak” noticeable intrinsic variation into phase-independent templates.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

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

Simbad objects: 73

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Number of rows : 73
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 PTF 10wnm SN* 00 22 03.6960671352 +27 02 21.519078396   18.17 18.13     SNIa 19 0
2 2MASS J00361352+0710005 SN* 00 36 13.5318682992 +07 10 00.640920180           SNIa 5 0
3 SNF 20061022-005 SN* 00 40 38.033 -08 52 52.79           ~ 3 0
4 SNF 20061020-000 SN* 00 41 05.1 +06 47 44           SNIa 8 0
5 PTF 09foz SN* 00 42 11.9 -09 52 54           ~ 17 0
6 SNF 20070818-001 SN* 01 10 55.27 -06 27 09.0           SNIa 6 0
7 SNF 20070902-018 SN* 01 21 09.329 -04 14 11.75           ~ 7 0
8 SN 2005hj SN* 01 26 48.40 -01 14 17.2       17.40   SNIa 100 1
9 PTF 12grk SN* 01 36 35.52 +34 01 58.2           SNIa 3 0
10 SNF 20080825-010 SN* 01 37 40.94 -13 18 53.6           SNIa 8 0
11 SN 2005hc SN* 01 56 47.976 -00 12 48.62           SNIa 99 1
12 SNF 20080913-031 SN* 02 11 32.3 +23 53 07           ~ 6 0
13 SN 2010gy SN* 02 27 12.00 -04 32 05.2   18.21 18.31     SNIa 29 1
14 PTF 12iiq SN* 02 50 07.76 -00 15 54.4           SNIa 9 0
15 SN 2012fr SN* 03 33 35.99 -36 07 37.7           SNIa-norm 178 1
16 SN 2007bd SN* 08 31 33.281 -01 11 57.98           SNIa 100 1
17 SN 2011hr SN* 08 54 46.03 +39 32 16.1           SNIa 22 1
18 SN 2011be SN* 09 22 52.62 +21 59 15.7           SNIa 7 1
19 NAME CRTS CSS130502 J114010+3001461 SN* 11 40 09.48 +30 01 44.4           SNIa 3 0
20 PTF 11bju SN* 11 56 14.36 +25 21 14.5           SNIa 5 0
21 SN 2011bc SN* 12 04 32.94 +20 12 11.4           SNIa 13 1
22 SN 2010dm SN* 12 11 33.31 +47 16 28.5   17.33 17.14 19.5   SNIa 27 1
23 SN 2012cg SN* 12 27 12.83 +09 25 13.2           SNIa-norm 224 1
24 PTF 10icb SN* 12 54 49.16 +58 52 55.1   14.48 14.42 17.4   SNIa 20 0
25 SN 2006cj SN* 12 59 24.42 +28 20 51.6     18.1     SNIa 46 1
26 CRTS CSS130503 J130650+153433 SN* 13 06 50.45 +15 34 32.4           SNIa 9 0
27 SNF 20080514-002 SN* 13 29 12.84 +11 16 20.5           SNIa 47 0
28 SNF 20080522-000 SN* 13 36 47.61 +05 08 32.6           SNIa 26 0
29 SNF 20080510-005 SN* 13 38 24.60 +09 40 09.1           SNIa 4 0
30 PTF 12dxm SN* 13 53 26.48 +43 54 48.6           SNIa 8 0
31 SNF 20060512-001 SN* 14 13 24.98 +17 46 59.8           ~ 8 0
32 SN 2013bt SN* 14 21 15.13 +61 34 15.9           SNIa 6 1
33 SNF 20080614-010 SN* 14 26 53.08 +23 56 11.0           SNIa 5 0
34 SNF 20060526-003 SN* 14 43 02.5 -18 52 37           SNIa 6 0
35 SNF 20080510-001 SN* 14 56 13.27 +18 51 14.4           SNIa 6 0
36 SNF 20070424-003 SN* 14 57 54.52 +18 36 20.8           SNIa 5 0
37 PTF 12fuu SN* 15 04 40.39 +06 04 21.0           SNIa 5 0
38 SNF 20070506-006 SN* 15 09 34.63 +04 52 28.9           SNIa 9 0
39 SNF 20080522-011 SN* 15 19 58.94 +04 54 16.5           SNIa 25 0
40 LSQ 14cnm SN* 16 05 24.50 +01 12 58.7           SNIa 4 0
41 SNF 20080620-000 SN* 16 10 17.56 +22 43 31.4           ~ 7 0
42 SN 2008cl SN* 16 11 04.349 +52 27 07.99           SNIa 20 1
43 SNF 20070802-000 SN* 16 14 51.6 +56 23 56           SNIa 6 0
44 SNF 20080507-000 SN* 16 15 07.08 +50 16 41.5           ~ 5 0
45 SNF 20080531-000 SN* 16 17 00.0 +19 07 05           SNIa 6 0
46 PTF 11bnx SN* 16 30 19.32 +21 05 07.3           SNIa 5 0
47 SN 2010dt SN* 16 43 15.062 +32 40 27.55           SNIa 23 1
48 2MASS J16503452+6016345 SN* 16 50 34.5006556632 +60 16 34.436277624   18.60 18.47     SNIa 17 0
49 SN 2008eq SN* 17 00 07.200 +23 07 56.60           SNIa 22 1
50 PTF 11bgv SN* 17 09 11.465 +28 36 23.03           SNIa 1 0
51 SN 2010gn SN* 17 17 50.11 +40 52 52.6   16.81 16.78     SNIa 32 1
52 SN 2009jb SN* 17 23 41.8 +30 29 50   1.05 1.07 18.5   SNIa-norm 24 1
53 SNF 20070717-003 SN* 17 26 18.98 +23 08 03.8           SNIa 4 0
54 SNF 20080810-001 SN* 17 39 37.77 +37 52 03.7           SNIa 6 0
55 SN 2012dn SN* 20 23 36.26 -28 16 43.4           SNIa-norm 64 2
56 SNF 20080821-000 SN* 20 24 20.18 +06 10 27.8           ~ 5 0
57 SN 2011gf SN* 21 12 24.27 -07 48 52.1           SNIa 9 1
58 LSQ 12fhe SN* 21 32 09.4 -05 43 34           SNIa* 4 0
59 PTF 11mty SN* 21 34 05.20 +10 25 24.6           SNIa 7 0
60 PTF 09dlc SN* 21 46 30.00 +06 25 06.9   18.04 18.20 19.2   SNIa-norm 26 0
61 SNF 20080909-030 SN* 22 01 49.070 +13 03 19.10           SNIa 18 1
62 SNF 20070831-015 SN* 22 31 25.709 +10 47 41.46           ~ 5 0
63 SN 2011he SN* 22 36 46.72 +20 21 31.2           SNIapec 8 1
64 SN 2011ga SN* 22 40 27.42 +03 11 58.0           SNIa 6 1
65 SN 2004ef SN* 22 42 10.020 +19 59 39.88           SNIa 107 1
66 SNF 20080626-002 SN* 22 45 02.47 +08 56 35.8           SNIa 5 0
67 SNF 20061111-002 SN* 23 07 18.69 -13 31 07.3           SNIa 5 0
68 PTF 09fox SN* 23 20 47.800 +32 30 06.27   18.25 18.25 18.8   ~ 13 0
69 PTF 10wof SN* 23 32 41.37 +15 21 31.6   17.93 17.83     SNIa 17 0
70 SNF 20080918-000 SN* 23 33 19.34 +25 12 44.2           ~ 4 0
71 SNF 20070630-006 SN* 23 35 27.50 +19 13 25.6           SNIa 5 0
72 SNF 20080725-004 SN* 23 37 22.12 +19 55 52.6           ~ 5 0
73 SNF 20080714-008 SN* 23 51 37.53 +20 08 20.7           SNIa 4 0

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