2025udx

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Information

Transient

Name: AT2025udx
Right ascension: 23h29m10.31s
Declination: -3d29m50.32s
Discovery Date: Aug. 16, 2025, 8:48 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.042

Host

Name:
Right ascension: 23h29m09.69s
Declination: -3d29m53.30s
Redshift: None
Photometric Redshift: 0.098

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	33.01
Transient MWEBV	processed	0.06
Host match	processed	6.71
Host information	processed	0.15
Host MWEBV	processed	0.05
Global aperture construction	processed	0.68
Global aperture photometry	processed	5.66
Validate global photometry	processed	14.52
Global host SED inference	processed	390.13
Local aperture photometry	processed	6.69
Validate local photometry	processed	0.03
Local host SED inference	processed	480.13

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) = 23h29m10.31s, -3d29m50.32s
semi major axis, semi minor axis (arcsec) = 1.1, 1.1
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_r	7.9	0.27	21.656	0.037	AB
PanSTARRS_z	6.72	0.74	21.831	0.119	AB
DES_z	13.04	0.7	21.112	0.059	AB
PanSTARRS_y	8.36	1.64	21.594	0.213	AB

Aperture details

RA, DEC (J2000) = 23h29m09.67s, -3d29m52.96s
semi major axis, semi minor axis (arcsec) = 21.5, 6.81
angle (degrees, anti-clockwise from east) = -110.05

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	30.17	1.5	20.201	0.054	AB
GALEX_NUV	40.9	1.09	19.871	0.029	AB
DES_g	388.81	1.29	17.426	0.004	AB
PanSTARRS_g	460.1	2.49	17.243	0.006	AB
PanSTARRS_r	792.45	3.34	16.653	0.005	AB
DES_r	761.1	2.74	16.696	0.004	AB
PanSTARRS_i	1144.2	4.23	16.254	0.004	AB
PanSTARRS_z	1288.79	8.14	16.125	0.007	AB
DES_z	1331.76	7.25	16.089	0.006	AB
2MASS_J	1945.89	263.92	14.782	0.147	Vega
2MASS_H	2691.2	433.58	13.958	0.175	Vega
2MASS_K	2560.16	514.47	13.542	0.218	Vega
WISE_W1	1245.09	29.41	13.463	0.026	Vega
WISE_W2	924.2	36.03	13.147	0.042	Vega
WISE_W3	2823.99	167.97	10.099	0.065	Vega
WISE_W4	4808.71	1148.06	8.075	0.259	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})\,	8.133	8.454	8.658
{\rm log}_{10}({\rm SFR})	-1.353	-0.819	-0.269
{\rm log}_{10}({\rm sSFR})	-9.910	-9.289	-8.520
{\rm stellar\ age}	0.699	4.547	6.740

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.660	-1.121	-0.275
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.455	-0.605	0.184

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.492	0.948	1.424
\delta	-0.274	-0.013	0.208
\tau_1/\tau_2	0.691	1.073	1.466
Q_{PAH}	1.066	2.691	5.233
U_{min}	3.096	8.203	15.466
{\rm log}_{10}(\gamma_e)\,	-2.806	-1.686	-0.619

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.537	-0.304	0.222
{\rm log}_{10}(\tau_{AGN})\,	1.139	1.634	2.010

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.234	-0.758	-0.272
0.03-0.10 Gyr	-1.684	-0.940	-0.271
0.10-0.33 Gyr	-2.074	-1.200	-0.580
0.33-1.06 Gyr	-2.793	-1.411	-0.912
1.06-3.45 Gyr	-3.576	-1.564	-1.177
3.45-11.23 Gyr	-4.013	-1.711	-1.237
11.23-12.47 Gyr	-3.702	-1.817	-1.099

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.776	10.815	10.865
{\rm log}_{10}({\rm SFR})	0.193	0.370	0.573
{\rm log}_{10}({\rm sSFR})	-10.647	-10.441	-10.246
{\rm stellar\ age}	7.160	7.824	9.481

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.588	-0.363	-0.175
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.874	-0.557	-0.321

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.195	0.303	0.432
\delta	-0.627	-0.311	-0.035
\tau_1/\tau_2	0.565	0.925	1.309
Q_{PAH}	0.734	1.716	2.851
U_{min}	2.704	7.267	13.929
{\rm log}_{10}(\gamma_e)\,	-2.945	-2.128	-1.427

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.368	-1.666	-1.364
{\rm log}_{10}(\tau_{AGN})\,	0.983	1.330	1.714

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	0.539	0.686	0.846
0.03-0.10 Gyr	-0.757	0.053	0.468
0.10-0.33 Gyr	-0.971	-0.180	0.213
0.33-1.06 Gyr	-0.944	-0.185	0.203
1.06-3.45 Gyr	-0.513	0.246	0.699
3.45-11.23 Gyr	0.791	1.011	1.101
11.23-12.47 Gyr	0.703	1.206	1.731