2025qcu

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Information

Transient

Name: SN2025qcu
Right ascension: 21h55m13.83s
Declination: 23d38m22.69s
Discovery Date: July 1, 2025, 11:33 a.m.
Classification: SN Ia
Redshift: 0.064000
MW E(B-V): 0.056

Host

Name:
Right ascension: 21h55m13.54s
Declination: 23d38m23.66s
Redshift: None
Photometric Redshift: 0.046

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	47.78
Transient MWEBV	processed	0.09
Host match	processed	8.49
Host information	processed	0.14
Host MWEBV	processed	0.04
Global aperture construction	processed	0.7
Global aperture photometry	processed	5.8
Validate global photometry	processed	17.67
Global host SED inference	processed	637.76
Local aperture photometry	processed	6.46
Validate local photometry	processed	0.03
Local host SED inference	processed	603.33

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) = 21h55m13.83s, 23d38m22.69s
semi major axis, semi minor axis (arcsec) = 1.63, 1.63
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	1.71	1.75	23.315	1.106	AB
SDSS_g	2.76	0.64	22.796	0.252	AB
DES_g	2.59	0.13	22.868	0.055	AB
PanSTARRS_g	1.77	0.39	23.277	0.242	AB
SDSS_r	2.05	1.08	23.118	0.571	AB
PanSTARRS_r	2.2	0.43	23.046	0.210	AB
DES_r	3.26	0.25	22.616	0.084	AB
SDSS_i	1.18	1.94	23.724	1.792	AB
PanSTARRS_i	3.13	0.48	22.660	0.166	AB
PanSTARRS_z	3.86	1.33	22.434	0.373	AB
SDSS_z	-2.65	6.75			AB
DES_z	3.06	0.63	22.684	0.225	AB
PanSTARRS_y	-0.27	2.91			AB

Aperture details

RA, DEC (J2000) = 21h55m13.52s, 23d38m23.89s
semi major axis, semi minor axis (arcsec) = 5.08, 2.71
angle (degrees, anti-clockwise from east) = -83.44

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	8.5	2.33	21.576	0.297	AB
GALEX_NUV	5.68	1.61	22.014	0.308	AB
SDSS_u	4.52	4.06	22.261	0.974	AB
SDSS_g	42.22	1.99	19.836	0.051	AB
DES_g	43.86	0.39	19.795	0.010	AB
PanSTARRS_g	43.1	0.92	19.814	0.023	AB
SDSS_r	59.3	3.02	19.467	0.055	AB
PanSTARRS_r	63.7	0.97	19.390	0.017	AB
DES_r	68.47	0.82	19.311	0.013	AB
SDSS_i	68.2	4.76	19.316	0.076	AB
PanSTARRS_i	73.4	1.07	19.236	0.016	AB
PanSTARRS_z	88.59	2.96	19.032	0.036	AB
SDSS_z	91.27	15.56	18.999	0.185	AB
DES_z	84.38	2.2	19.084	0.028	AB
PanSTARRS_y	75.52	6.46	19.205	0.093	AB
2MASS_J	96.66	124.56	18.042	1.399	Vega
2MASS_H	-356.3	193.36			Vega
2MASS_K	159.8	199.09	16.553	1.353	Vega
WISE_W1	39.87	16.91	17.199	0.460	Vega
WISE_W2	13.43	14.6	17.740	1.180	Vega
WISE_W3	-10.61	48.32			Vega
WISE_W4	-344.42	345.41			Vega

Imaging data

Click the image to load the interactive plot.

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})\,	7.100	7.498	7.767
{\rm log}_{10}({\rm SFR})	-1.806	-1.420	-0.927
{\rm log}_{10}({\rm sSFR})	-9.467	-8.811	-8.025
{\rm stellar\ age}	0.205	3.216	6.135

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.333	-0.533	-0.008
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.315	-0.860	-0.276

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.538	0.880	1.431
\delta	-0.151	0.145	0.323
\tau_1/\tau_2	0.720	1.123	1.558
Q_{PAH}	1.529	3.732	5.937
U_{min}	3.063	8.494	16.100
{\rm log}_{10}(\gamma_e)\,	-2.876	-1.742	-0.691

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-0.749	0.091	0.369
{\rm log}_{10}(\tau_{AGN})\,	1.037	1.476	1.943

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.786	-1.443	-0.958
0.03-0.10 Gyr	-2.139	-1.509	-0.911
0.10-0.33 Gyr	-2.788	-1.836	-1.305
0.33-1.08 Gyr	-4.366	-2.277	-1.777
1.08-3.54 Gyr	-5.394	-2.791	-2.145
3.54-11.62 Gyr	-6.005	-2.961	-2.250
11.62-12.91 Gyr	-5.857	-3.004	-2.137

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.855	8.979	9.123
{\rm log}_{10}({\rm SFR})	-1.422	-0.956	-0.520
{\rm log}_{10}({\rm sSFR})	-10.435	-9.973	-9.494
{\rm stellar\ age}	2.558	5.343	6.994

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.651	-1.106	-0.530
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.825	-1.349	0.107

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.055	0.352	0.780
\delta	-0.132	0.219	0.352
\tau_1/\tau_2	0.601	1.005	1.439
Q_{PAH}	2.138	4.124	5.930
U_{min}	3.672	9.313	16.452
{\rm log}_{10}(\gamma_e)\,	-2.531	-1.234	-0.328

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.359	-1.149	-0.352
{\rm log}_{10}(\tau_{AGN})\,	1.090	1.562	1.963

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.908	-1.321	-0.879
0.03-0.10 Gyr	-1.477	-0.899	-0.414
0.10-0.33 Gyr	-1.029	-0.572	-0.102
0.33-1.08 Gyr	-1.112	-0.645	-0.323
1.08-3.54 Gyr	-1.340	-0.866	-0.619
3.54-11.62 Gyr	-1.982	-1.091	-0.813
11.62-12.91 Gyr	-2.131	-1.076	-0.566