2025xad

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Information

Transient

Name: AT2025xad
Right ascension: 9h16m33.43s
Declination: 39d10m37.00s
Discovery Date: Sept. 4, 2025, 12:28 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.015

Host

Name: SDSSJ091632.23+39104
Right ascension: 9h16m32.16s
Declination: 39d10m48.68s
Redshift: 0.069976
Photometric Redshift: 0.070

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	24.03
Transient MWEBV	processed	0.08
Host match	processed	3.84
Host information	processed	0.15
Host MWEBV	processed	0.04
Global aperture construction	processed	0.66
Global aperture photometry	processed	4.25
Validate global photometry	processed	12.87
Global host SED inference	processed	544.02
Local aperture photometry	processed	5.01
Validate local photometry	processed	0.02
Local host SED inference	processed	433.45

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) = 9h16m33.43s, 39d10m37.00s
semi major axis, semi minor axis (arcsec) = 1.5, 1.5
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	31.65	0.39	20.149	0.013	AB
SDSS_r	59.8	2.1	19.458	0.038	AB
PanSTARRS_r	56.26	0.38	19.525	0.007	AB
PanSTARRS_i	80.03	0.39	19.142	0.005	AB
PanSTARRS_z	92.71	0.9	18.982	0.011	AB
DES_z	109.81	1.83	18.798	0.018	AB
PanSTARRS_y	106.69	2.29	18.830	0.023	AB

Aperture details

RA, DEC (J2000) = 9h16m32.22s, 39d10m48.65s
semi major axis, semi minor axis (arcsec) = 7.44, 3.54
angle (degrees, anti-clockwise from east) = -73.89

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	0.0	0.07	29.693	15.618	AB
GALEX_NUV	5.55	1.42	22.040	0.278	AB
DES_g	270.49	1.14	17.820	0.005	AB
SDSS_r	545.91	6.45	17.057	0.013	AB
PanSTARRS_r	536.1	1.27	17.077	0.003	AB
PanSTARRS_i	763.22	1.34	16.693	0.002	AB
PanSTARRS_z	888.19	3.16	16.529	0.004	AB
DES_z	937.81	5.39	16.470	0.006	AB
PanSTARRS_y	1081.04	7.77	16.315	0.008	AB
2MASS_J	1397.79	120.25	15.141	0.093	Vega
2MASS_H	1763.75	182.71	14.416	0.112	Vega
2MASS_K	1185.46	218.99	14.377	0.201	Vega
WISE_W3	0.72	68.07	19.079	102.322	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})\,	9.204	9.341	9.471
{\rm log}_{10}({\rm SFR})	-1.924	-1.174	-0.567
{\rm log}_{10}({\rm sSFR})	-11.282	-10.540	-9.892
{\rm stellar\ age}	4.304	6.862	8.308

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.511	-0.811	-0.274
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.645	-0.736	0.143

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.354	0.734	1.146
\delta	-0.430	-0.036	0.234
\tau_1/\tau_2	0.666	1.016	1.382
Q_{PAH}	0.788	2.450	4.829
U_{min}	2.959	8.082	15.582
{\rm log}_{10}(\gamma_e)\,	-2.905	-1.450	-0.484

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.527	-0.830	-0.178
{\rm log}_{10}(\tau_{AGN})\,	1.124	1.615	1.987

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.170	-1.445	-0.922
0.03-0.10 Gyr	-2.102	-1.157	-0.462
0.10-0.33 Gyr	-1.886	-1.061	-0.443
0.33-1.07 Gyr	-1.712	-0.892	-0.320
1.07-3.52 Gyr	-1.408	-0.672	-0.367
3.52-11.55 Gyr	-1.194	-0.588	-0.376
11.55-12.83 Gyr	-1.309	-0.542	0.050

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.113	10.296	10.481
{\rm log}_{10}({\rm SFR})	-2.279	-0.801	0.162
{\rm log}_{10}({\rm sSFR})	-12.643	-11.087	-10.061
{\rm stellar\ age}	3.821	7.049	9.903

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.596	-0.982	-0.528
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.384	-0.078	0.328

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.347	0.656	0.946
\delta	-0.780	-0.487	0.204
\tau_1/\tau_2	0.496	0.920	1.342
Q_{PAH}	0.946	3.192	5.487
U_{min}	3.011	8.755	16.570
{\rm log}_{10}(\gamma_e)\,	-3.175	-1.326	-0.378

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.086	-2.174	-0.827
{\rm log}_{10}(\tau_{AGN})\,	0.937	1.488	1.910

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.510	-0.784	-0.116
0.03-0.10 Gyr	-4.010	-0.985	0.248
0.10-0.33 Gyr	-3.983	-0.932	0.413
0.33-1.07 Gyr	-3.156	-0.441	0.529
1.07-3.52 Gyr	-1.852	0.156	0.657
3.52-11.55 Gyr	-1.066	0.253	0.630
11.55-12.83 Gyr	-1.328	0.272	1.341