2025xdj

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Information

Transient

Name: AT2025xdj
Right ascension: 21h48m09.18s
Declination: -7d21m47.26s
Discovery Date: Sept. 3, 2025, 6:51 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.045

Host

Name: 1020275
Right ascension: 21h48m09.12s
Declination: -7d21m47.38s
Redshift: 0.082771
Photometric Redshift: 0.082

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	31.23
Transient MWEBV	processed	0.14
Host match	processed	4.0
Host information	processed	0.16
Host MWEBV	processed	0.06
Global aperture construction	processed	0.66
Global aperture photometry	processed	6.52
Validate global photometry	processed	16.78
Global host SED inference	processed	471.92
Local aperture photometry	processed	6.46
Validate local photometry	processed	0.03
Local host SED inference	processed	441.94

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) = 21h48m09.18s, -7d21m47.26s
semi major axis, semi minor axis (arcsec) = 1.29, 1.29
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	81.69	0.7	19.120	0.009	AB
PanSTARRS_r	149.15	0.45	18.466	0.003	AB
DES_r	169.04	2.28	18.330	0.015	AB
SDSS_i	247.19	4.25	17.917	0.019	AB
PanSTARRS_i	220.19	0.47	18.043	0.002	AB
PanSTARRS_z	267.96	0.92	17.830	0.004	AB
DES_z	336.0	5.7	17.584	0.018	AB
PanSTARRS_y	277.26	1.93	17.793	0.008	AB

Aperture details

RA, DEC (J2000) = 21h48m09.17s, -7d21m47.30s
semi major axis, semi minor axis (arcsec) = 6.31, 5.79
angle (degrees, anti-clockwise from east) = -14.03

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	1.55	0.46	23.425	0.320	AB
GALEX_NUV	2.54	0.46	22.889	0.198	AB
SDSS_u	42.16	6.23	19.838	0.160	AB
SDSS_g	211.6	4.39	18.086	0.023	AB
DES_g	221.27	1.36	18.038	0.007	AB
PanSTARRS_g	218.02	1.36	18.054	0.007	AB
SDSS_r	453.98	6.46	17.257	0.015	AB
PanSTARRS_r	451.81	1.82	17.263	0.004	AB
DES_r	504.11	4.1	17.144	0.009	AB
SDSS_i	700.71	8.83	16.786	0.014	AB
PanSTARRS_i	673.21	1.93	16.830	0.003	AB
PanSTARRS_z	851.39	3.98	16.575	0.005	AB
SDSS_z	975.81	22.13	16.427	0.025	AB
DES_z	913.23	9.8	16.499	0.012	AB
PanSTARRS_y	955.18	8.86	16.450	0.010	AB
2MASS_J	1262.48	154.15	15.252	0.133	Vega
2MASS_H	1723.16	261.09	14.442	0.165	Vega
2MASS_K	1076.87	286.13	14.482	0.288	Vega
WISE_W1	561.38	17.74	14.328	0.034	Vega
WISE_W2	318.3	23.23	14.304	0.079	Vega
WISE_W3	261.09	74.34	12.684	0.309	Vega
WISE_W4	33.94	422.79	13.453	13.523	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})\,	9.775	9.953	10.071
{\rm log}_{10}({\rm SFR})	-1.532	-0.722	-0.113
{\rm log}_{10}({\rm sSFR})	-11.539	-10.694	-9.946
{\rm stellar\ age}	4.604	7.333	9.855

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.475	-0.908	-0.599
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.694	-1.025	-0.132

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.254	0.549	0.939
\delta	-0.775	-0.474	-0.077
\tau_1/\tau_2	0.617	1.002	1.375
Q_{PAH}	0.664	2.141	4.914
U_{min}	2.933	8.255	15.546
{\rm log}_{10}(\gamma_e)\,	-3.282	-2.302	-1.235

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.586	-1.419	-0.668
{\rm log}_{10}(\tau_{AGN})\,	0.923	1.278	1.772

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.744	-0.922	-0.558
0.03-0.10 Gyr	-2.007	-0.731	0.000
0.10-0.33 Gyr	-2.003	-0.668	0.047
0.33-1.07 Gyr	-1.988	-0.580	0.069
1.07-3.49 Gyr	-1.625	-0.287	0.171
3.49-11.40 Gyr	-1.021	-0.004	0.227
11.40-12.67 Gyr	-0.865	0.191	0.961

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.494	10.609	10.659
{\rm log}_{10}({\rm SFR})	-1.991	-1.079	-0.494
{\rm log}_{10}({\rm sSFR})	-12.584	-11.659	-11.012
{\rm stellar\ age}	7.717	11.533	12.020

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.350	-1.044	-0.834
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.543	-0.528	0.215

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.248	0.367	0.512
\delta	-0.800	-0.574	-0.351
\tau_1/\tau_2	0.556	1.033	1.502
Q_{PAH}	0.528	1.543	3.424
U_{min}	3.065	9.245	17.639
{\rm log}_{10}(\gamma_e)\,	-2.847	-1.700	-0.728

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.421	-3.404	-2.348
{\rm log}_{10}(\tau_{AGN})\,	1.055	1.593	1.988

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.052	-1.363	-0.747
0.03-0.10 Gyr	-3.052	-1.159	-0.390
0.10-0.33 Gyr	-3.930	-1.458	-0.477
0.33-1.07 Gyr	-5.192	-2.150	-0.735
1.07-3.49 Gyr	-4.224	-1.810	-0.375
3.49-11.40 Gyr	-2.103	-0.101	0.784
11.40-12.67 Gyr	0.598	1.732	1.808