2025xch

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Information

Transient

Name: SN2025xch
Right ascension: 19h21m45.05s
Declination: 58d01m59.99s
Discovery Date: Sept. 6, 2025, 5:15 a.m.
Classification: SN Ia
Redshift: 0.094000
MW E(B-V): 0.052

Host

Name:
Right ascension: 19h21m45.13s
Declination: 58d01m59.76s
Redshift: 0.079418
Photometric Redshift: 0.065

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	4.15
Transient MWEBV	processed	0.05
Host match	processed	7.02
Host information	processed	0.11
Host MWEBV	processed	0.04
Global aperture construction	processed	0.66
Global aperture photometry	processed	4.45
Validate global photometry	processed	12.35
Global host SED inference	processed	486.62
Local aperture photometry	processed	4.57
Validate local photometry	processed	0.02
Local host SED inference	processed	616.38

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) = 19h21m45.05s, 58d01m59.99s
semi major axis, semi minor axis (arcsec) = 1.33, 1.33
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	120.14	0.65	18.701	0.006	AB
PanSTARRS_g	129.39	0.38	18.620	0.003	AB
PanSTARRS_r	290.94	0.52	17.740	0.002	AB
PanSTARRS_i	414.26	0.55	17.357	0.001	AB
PanSTARRS_z	534.42	1.34	17.080	0.003	AB
DES_z	574.35	4.34	17.002	0.008	AB
PanSTARRS_y	574.85	2.26	17.001	0.004	AB

Aperture details

RA, DEC (J2000) = 19h21m45.12s, 58d01m59.90s
semi major axis, semi minor axis (arcsec) = 6.84, 6.24
angle (degrees, anti-clockwise from east) = -29.33

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_g	399.04	1.22	17.397	0.003	AB
PanSTARRS_g	430.45	1.51	17.315	0.004	AB
PanSTARRS_r	881.05	2.07	16.538	0.003	AB
PanSTARRS_i	1242.43	2.29	16.164	0.002	AB
PanSTARRS_z	1572.36	6.03	15.909	0.004	AB
DES_z	1660.16	7.65	15.850	0.005	AB
PanSTARRS_y	1872.4	10.76	15.719	0.006	AB
2MASS_J	2363.51	158.41	14.571	0.073	Vega
2MASS_H	2546.84	285.81	14.017	0.122	Vega
2MASS_K	2602.65	269.83	13.524	0.113	Vega
WISE_W1	1040.0	21.55	13.658	0.022	Vega
WISE_W2	627.95	18.55	13.566	0.032	Vega
WISE_W3	143.75	41.82	13.332	0.316	Vega
WISE_W4	112.75	237.22	12.150	2.284	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})\,	10.269	10.387	10.483
{\rm log}_{10}({\rm SFR})	-4.273	-1.402	-0.556
{\rm log}_{10}({\rm sSFR})	-14.492	-11.749	-10.863
{\rm stellar\ age}	7.495	10.648	12.058

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.605	-1.060	-0.730
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.481	-0.801	-0.069

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.346	0.576	0.871
\delta	-0.708	-0.395	0.009
\tau_1/\tau_2	0.478	0.961	1.403
Q_{PAH}	0.811	3.061	5.774
U_{min}	3.249	9.388	17.867
{\rm log}_{10}(\gamma_e)\,	-2.968	-1.367	-0.396

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.379	-1.339	-0.718
{\rm log}_{10}(\tau_{AGN})\,	0.970	1.410	1.889

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-5.219	-1.794	-0.747
0.03-0.10 Gyr	-5.101	-1.601	-0.525
0.10-0.33 Gyr	-5.652	-2.080	-0.651
0.33-1.07 Gyr	-6.109	-2.435	-0.662
1.07-3.50 Gyr	-4.456	-2.114	-0.173
3.50-11.44 Gyr	-1.989	0.086	0.589
11.44-12.71 Gyr	0.189	1.400	1.613

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.716	10.833	10.876
{\rm log}_{10}({\rm SFR})	-5.591	-2.528	-1.206
{\rm log}_{10}({\rm sSFR})	-16.333	-13.326	-11.952
{\rm stellar\ age}	7.558	11.374	12.066

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.965	-0.762	-0.613
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.503	-0.606	0.153

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.086	0.192	0.315
\delta	-0.792	-0.474	-0.130
\tau_1/\tau_2	0.525	0.985	1.445
Q_{PAH}	0.527	1.723	3.626
U_{min}	3.261	9.701	17.912
{\rm log}_{10}(\gamma_e)\,	-3.028	-2.109	-0.748

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.419	-3.350	-2.429
{\rm log}_{10}(\tau_{AGN})\,	1.032	1.491	1.918

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-6.803	-3.208	-1.589
0.03-0.10 Gyr	-6.527	-2.790	-1.117
0.10-0.33 Gyr	-6.643	-3.160	-1.274
0.33-1.07 Gyr	-6.428	-3.271	-1.203
1.07-3.50 Gyr	-4.049	-2.114	-0.341
3.50-11.44 Gyr	-1.842	0.274	1.026
11.44-12.71 Gyr	0.487	1.918	2.023