2025ucd

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Information

Transient

Name: AT2025ucd
Right ascension: 17h37m00.60s
Declination: 31d35m42.90s
Discovery Date: Aug. 16, 2025, 7:03 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.046

Host

Name:
Right ascension: 17h37m00.57s
Declination: 31d35m44.99s
Redshift: None
Photometric Redshift: 0.106

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	27.25
Transient MWEBV	processed	0.03
Host match	processed	6.12
Host information	processed	0.14
Host MWEBV	processed	0.03
Global aperture construction	processed	0.68
Global aperture photometry	processed	5.94
Validate global photometry	processed	16.09
Global host SED inference	processed	394.65
Local aperture photometry	processed	6.58
Validate local photometry	processed	0.02
Local host SED inference	processed	700.16

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) = 17h37m00.60s, 31d35m42.90s
semi major axis, semi minor axis (arcsec) = 1.03, 1.03
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_z	28.38	1.77	20.267	0.068	AB
PanSTARRS_y	21.07	1.6	20.591	0.082	AB

Aperture details

RA, DEC (J2000) = 17h37m00.57s, 31d35m45.19s
semi major axis, semi minor axis (arcsec) = 8.14, 2.93
angle (degrees, anti-clockwise from east) = -174.58

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	18.53	4.17	20.731	0.245	AB
SDSS_g	71.96	2.55	19.257	0.038	AB
DES_g	63.33	0.72	19.396	0.012	AB
PanSTARRS_g	64.58	1.06	19.375	0.018	AB
SDSS_r	129.17	3.51	18.622	0.029	AB
PanSTARRS_r	127.35	1.35	18.638	0.011	AB
DES_r	137.35	1.69	18.555	0.013	AB
SDSS_i	187.14	4.53	18.220	0.026	AB
PanSTARRS_i	181.7	1.74	18.252	0.010	AB
PanSTARRS_z	215.79	3.3	18.065	0.017	AB
SDSS_z	238.42	16.23	17.957	0.074	AB
DES_z	236.0	5.38	17.968	0.025	AB
PanSTARRS_y	236.23	7.42	17.967	0.034	AB
2MASS_J	279.59	117.55	16.889	0.456	Vega
2MASS_H	405.6	190.69	16.012	0.510	Vega
2MASS_K	669.49	192.04	14.998	0.311	Vega
WISE_W1	203.09	13.8	15.432	0.074	Vega
WISE_W2	130.53	15.14	15.272	0.126	Vega
WISE_W3	201.27	58.26	12.967	0.314	Vega
WISE_W4	250.02	385.95	11.285	1.676	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})\,	8.583	8.893	9.162
{\rm log}_{10}({\rm SFR})	-0.973	-0.500	0.104
{\rm log}_{10}({\rm sSFR})	-10.008	-9.424	-8.578
{\rm stellar\ age}	1.887	5.610	7.750

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.594	-0.832	-0.136
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.464	-0.663	0.126

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.297	0.653	1.190
\delta	-0.706	-0.288	0.236
\tau_1/\tau_2	0.504	0.911	1.381
Q_{PAH}	0.558	1.962	4.989
U_{min}	2.951	8.239	15.463
{\rm log}_{10}(\gamma_e)\,	-3.123	-1.953	-0.727

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.596	-1.047	-0.078
{\rm log}_{10}(\tau_{AGN})\,	1.062	1.473	1.943

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.763	-0.307	0.069
0.03-0.10 Gyr	-2.018	-0.779	0.083
0.10-0.32 Gyr	-3.038	-1.280	-0.520
0.32-1.06 Gyr	-3.340	-1.287	-0.566
1.06-3.43 Gyr	-3.119	-1.305	-0.791
3.43-11.14 Gyr	-2.645	-1.213	-0.738
11.14-12.38 Gyr	-2.617	-1.198	-0.365

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.966	10.065	10.171
{\rm log}_{10}({\rm SFR})	-0.957	-0.410	-0.071
{\rm log}_{10}({\rm sSFR})	-11.061	-10.454	-10.094
{\rm stellar\ age}	5.888	7.071	8.580

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.990	-0.636	-0.389
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.540	-0.228	0.274

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.235	0.373	0.554
\delta	-0.681	-0.267	0.161
\tau_1/\tau_2	0.654	0.987	1.329
Q_{PAH}	0.949	2.133	3.908
U_{min}	2.671	7.369	13.769
{\rm log}_{10}(\gamma_e)\,	-2.878	-1.992	-0.861

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.857	-2.441	-1.625
{\rm log}_{10}(\tau_{AGN})\,	0.907	1.267	1.767

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.817	-0.420	-0.200
0.03-0.10 Gyr	-1.164	-0.428	0.000
0.10-0.32 Gyr	-1.281	-0.433	0.002
0.32-1.06 Gyr	-1.245	-0.392	0.022
1.06-3.43 Gyr	-0.697	-0.007	0.269
3.43-11.14 Gyr	-0.104	0.196	0.367
11.14-12.38 Gyr	-0.360	0.249	0.871