2025urn

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Information

Transient

Name: AT2025urn
Right ascension: 21h36m35.56s
Declination: 19d52m06.66s
Discovery Date: Aug. 20, 2025, 9:04 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.103

Host

Name:
Right ascension: 21h36m35.55s
Declination: 19d52m05.58s
Redshift: None
Photometric Redshift: 0.115

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	29.89
Transient MWEBV	processed	0.11
Host match	processed	7.38
Host information	processed	0.14
Host MWEBV	processed	0.04
Global aperture construction	processed	0.68
Global aperture photometry	processed	5.48
Validate global photometry	processed	17.28
Global host SED inference	processed	391.64
Local aperture photometry	processed	6.45
Validate local photometry	processed	0.02
Local host SED inference	not enough filters	16.68

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) = 21h36m35.56s, 19d52m06.66s
semi major axis, semi minor axis (arcsec) = 0.96, 0.96
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	25.16	1.03	20.398	0.044	AB

Aperture details

RA, DEC (J2000) = 21h36m35.53s, 19d52m05.77s
semi major axis, semi minor axis (arcsec) = 3.33, 2.86
angle (degrees, anti-clockwise from east) = -119.36

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_NUV	8.84	2.14	21.534	0.263	AB
SDSS_u	15.0	2.21	20.960	0.160	AB
SDSS_g	44.16	1.93	19.787	0.048	AB
DES_g	46.71	0.32	19.726	0.007	AB
PanSTARRS_g	49.23	0.7	19.669	0.015	AB
SDSS_r	69.13	2.47	19.301	0.039	AB
PanSTARRS_r	71.93	0.83	19.258	0.013	AB
DES_r	73.98	0.84	19.227	0.012	AB
SDSS_i	94.93	3.3	18.956	0.038	AB
PanSTARRS_i	93.69	0.88	18.971	0.010	AB
PanSTARRS_z	99.53	1.9	18.905	0.021	AB
SDSS_z	94.54	7.03	18.961	0.081	AB
DES_z	106.81	2.2	18.828	0.022	AB
PanSTARRS_y	106.2	4.37	18.835	0.045	AB
2MASS_J	-35.54	116.02			Vega
2MASS_H	-4.95	166.65			Vega
2MASS_K	43.69	150.75	17.961	3.746	Vega
WISE_W1	65.14	15.82	16.666	0.264	Vega
WISE_W2	30.51	16.6	16.850	0.591	Vega
WISE_W3	172.18	49.68	13.136	0.313	Vega
WISE_W4	343.75	480.77	10.939	1.518	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

Data not available

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.421	9.528	9.647
{\rm log}_{10}({\rm SFR})	-0.481	-0.199	0.091
{\rm log}_{10}({\rm sSFR})	-10.040	-9.742	-9.428
{\rm stellar\ age}	3.744	5.228	6.368

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.322	-0.865	-0.378
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.729	-1.247	-0.103

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.093	0.185	0.319
\delta	-0.582	-0.144	0.197
\tau_1/\tau_2	0.786	1.100	1.430
Q_{PAH}	0.757	1.883	3.458
U_{min}	2.897	7.610	14.781
{\rm log}_{10}(\gamma_e)\,	-2.892	-2.073	-1.239

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.841	-2.089	-1.357
{\rm log}_{10}(\tau_{AGN})\,	0.954	1.327	1.781

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.647	-0.459	-0.263
0.03-0.10 Gyr	-0.468	-0.121	0.209
0.10-0.32 Gyr	-0.116	0.134	0.346
0.32-1.05 Gyr	-0.324	-0.050	0.171
1.05-3.41 Gyr	-0.603	-0.326	-0.127
3.41-11.04 Gyr	-0.805	-0.464	-0.255
11.04-12.27 Gyr	-1.045	-0.469	-0.018