2025ahji

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Information

Transient

Name: SN2025ahji
Right ascension: 23h59m03.80s
Declination: 1d43m25.07s
Discovery Date: Dec. 12, 2025, 4:55 a.m.
Classification: SN Ib
Redshift: 0.022175
MW E(B-V): 0.023

Host

Name: IC1522
Right ascension: 23h59m03.45s
Declination: 1d43m11.59s
Redshift: 0.021006
Photometric Redshift:

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	5.86
Transient MWEBV	processed	0.1
Host match	processed	4.57
Host information	processed	0.25
Host MWEBV	processed	0.04
Global aperture construction	processed	0.64
Global aperture photometry	processed	4.41
Validate global photometry	processed	11.76
Global host SED inference	processed	382.28
Local aperture photometry	processed	4.05
Validate local photometry	processed	0.02
Local host SED inference	processed	448.18

Cutout Download Report

2MASS_H: 2MASS_J: 2MASS_K: WISE_W1: WISE_W2: WISE_W3: WISE_W4: GALEX_NUV: GALEX_FUV: PanSTARRS_g: PanSTARRS_r: PanSTARRS_i: PanSTARRS_z: PanSTARRS_y: SDSS_i: SDSS_r: SDSS_u: SDSS_z: SDSS_g: DES_g: DES_r: DES_i: DES_z: DES_Y:

Aperture Photometry

Aperture details

RA, DEC (J2000) = 23h59m03.80s, 1d43m25.07s
semi major axis, semi minor axis (arcsec) = 4.71, 4.71
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	19.43	0.75	20.679	0.042	AB
PanSTARRS_g	435.75	1.56	17.302	0.004	AB
PanSTARRS_r	738.26	1.3	16.729	0.002	AB
PanSTARRS_i	971.66	1.36	16.431	0.002	AB
PanSTARRS_z	1217.69	3.9	16.186	0.003	AB
PanSTARRS_y	1427.76	7.46	16.013	0.006	AB
2MASS_J	1742.14	99.13	14.902	0.062	Vega
2MASS_H	2317.09	150.54	14.120	0.071	Vega
2MASS_K	1910.89	171.58	13.859	0.097	Vega

Aperture details

RA, DEC (J2000) = 23h59m03.43s, 1d43m11.71s
semi major axis, semi minor axis (arcsec) = 39.81, 11.48
angle (degrees, anti-clockwise from east) = -168.91

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	191.32	2.44	18.196	0.014	AB
GALEX_NUV	292.05	1.98	17.736	0.007	AB
PanSTARRS_g	5232.74	6.85	14.603	0.001	AB
PanSTARRS_r	9174.57	5.78	13.994	0.001	AB
PanSTARRS_i	12723.61	5.94	13.638	0.001	AB
PanSTARRS_z	16223.51	17.43	13.375	0.001	AB
PanSTARRS_y	19242.22	33.57	13.189	0.002	AB
2MASS_J	24239.83	454.83	12.044	0.020	Vega
2MASS_H	29164.67	690.76	11.370	0.026	Vega
2MASS_K	25763.13	788.89	11.035	0.033	Vega
WISE_W1	12306.06	80.25	10.976	0.007	Vega
WISE_W2	7076.7	87.21	10.936	0.013	Vega
WISE_W3	16845.86	326.07	8.160	0.021	Vega
WISE_W4	16472.68	1976.8	6.738	0.130	Vega

Imaging data

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Spectral Energy Distribution

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Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.324	9.414	9.509
{\rm log}_{10}({\rm SFR})	-1.198	-0.808	-0.358
{\rm log}_{10}({\rm sSFR})	-10.625	-10.207	-9.753
{\rm stellar\ age}	6.112	7.514	9.124

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.221	-0.702	-0.321
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.617	-0.781	0.103

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.410	0.803	1.094
\delta	-0.247	0.007	0.225
\tau_1/\tau_2	0.706	1.030	1.367
Q_{PAH}	0.717	2.668	4.520
U_{min}	2.450	7.344	14.060
{\rm log}_{10}(\gamma_e)\,	-3.589	-2.782	-1.545

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.253	-2.433	-0.802
{\rm log}_{10}(\tau_{AGN})\,	1.010	1.583	1.986

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.317	-0.912	-0.596
0.03-0.10 Gyr	-1.249	-0.792	-0.267
0.10-0.33 Gyr	-1.270	-0.762	-0.368
0.33-1.10 Gyr	-1.476	-0.816	-0.439
1.10-3.65 Gyr	-1.301	-0.687	-0.395
3.65-12.13 Gyr	-0.809	-0.511	-0.346
12.13-13.48 Gyr	-0.923	-0.410	0.168

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.515	10.561	10.628
{\rm log}_{10}({\rm SFR})	-0.501	-0.200	0.042
{\rm log}_{10}({\rm sSFR})	-11.080	-10.757	-10.508
{\rm stellar\ age}	7.751	8.435	10.676

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.580	-0.337	-0.161
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.269	-0.555	0.194

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.209	0.328	0.498
\delta	-0.455	-0.164	0.067
\tau_1/\tau_2	0.430	0.856	1.263
Q_{PAH}	0.777	1.976	3.789
U_{min}	2.710	7.648	14.837
{\rm log}_{10}(\gamma_e)\,	-2.506	-1.867	-1.305

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.422	-3.510	-2.562
{\rm log}_{10}(\tau_{AGN})\,	1.224	1.739	2.031

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.801	-0.225	0.087
0.03-0.10 Gyr	-0.945	-0.241	0.114
0.10-0.33 Gyr	-1.046	-0.225	0.155
0.33-1.10 Gyr	-0.977	-0.261	0.056
1.10-3.65 Gyr	-0.755	0.007	0.363
3.65-12.13 Gyr	0.420	0.708	0.803
12.13-13.48 Gyr	0.496	0.943	1.527