2025yul

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Information

Transient

Name: AT2025yul
Right ascension: 21h56m26.76s
Declination: 9d51m56.16s
Discovery Date: Sept. 29, 2025, 12:16 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.044

Host

Name:
Right ascension: 21h56m26.64s
Declination: 9d51m57.91s
Redshift: None
Photometric Redshift: 0.071

Processing Status: completed

Task Name	Status	Time taken (s)
Cutout download	processed	17.19
Transient MWEBV	processed	0.04
Host match	processed	6.62
Host information	processed	0.12
Host MWEBV	processed	0.04
Global aperture construction	processed	2.71
Global aperture photometry	processed	6.48
Validate global photometry	processed	15.57
Global host SED inference	processed	1019.01
Local aperture photometry	processed	6.32
Validate local photometry	processed	0.03
Local host SED inference	processed	599.35

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) = 21h56m26.76s, 9d51m56.16s
semi major axis, semi minor axis (arcsec) = 1.48, 1.48
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_g	3.57	0.61	22.517	0.184	AB
DES_g	3.41	0.13	22.568	0.042	AB
PanSTARRS_g	3.25	0.33	22.620	0.109	AB
SDSS_r	4.93	0.9	22.167	0.197	AB
PanSTARRS_r	3.66	0.39	22.491	0.116	AB
DES_r	4.6	0.27	22.242	0.063	AB
SDSS_i	4.55	1.27	22.256	0.304	AB
PanSTARRS_i	3.95	0.35	22.408	0.095	AB
PanSTARRS_z	5.02	1.02	22.149	0.222	AB
SDSS_z	0.03	4.67	27.738	173.881	AB
DES_z	5.01	0.56	22.150	0.122	AB
PanSTARRS_y	2.1	2.71	23.096	1.404	AB

Aperture details

RA, DEC (J2000) = 21h56m26.63s, 9d51m58.32s
semi major axis, semi minor axis (arcsec) = 6.99, 3.85
angle (degrees, anti-clockwise from east) = -9.93

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	13.7	2.93	21.058	0.232	AB
GALEX_NUV	9.12	1.82	21.500	0.217	AB
SDSS_u	-4.88	3.83			AB
SDSS_g	26.53	1.91	20.341	0.078	AB
DES_g	24.06	0.4	20.447	0.018	AB
PanSTARRS_g	24.32	1.14	20.435	0.051	AB
SDSS_r	32.61	2.93	20.117	0.097	AB
PanSTARRS_r	30.01	1.36	20.207	0.049	AB
DES_r	31.64	0.83	20.149	0.029	AB
SDSS_i	36.19	4.33	20.004	0.130	AB
PanSTARRS_i	34.84	1.2	20.045	0.037	AB
PanSTARRS_z	39.43	3.54	19.910	0.097	AB
SDSS_z	68.2	16.42	19.316	0.261	AB
DES_z	37.28	1.8	19.971	0.052	AB
PanSTARRS_y	34.34	9.37	20.061	0.296	AB
2MASS_J	-123.61	110.82			Vega
2MASS_H	383.2	164.92	16.074	0.467	Vega
2MASS_K	-44.5	222.55			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})\,	7.379	7.663	7.865
{\rm log}_{10}({\rm SFR})	-2.040	-1.387	-0.679
{\rm log}_{10}({\rm sSFR})	-9.781	-9.028	-7.981
{\rm stellar\ age}	0.157	1.567	5.194

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.371	-0.448	0.021
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.379	-0.701	-0.049

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.316	0.632	1.252
\delta	-0.227	0.101	0.294
\tau_1/\tau_2	0.641	1.103	1.545
Q_{PAH}	1.630	3.637	5.641
U_{min}	3.398	9.034	16.917
{\rm log}_{10}(\gamma_e)\,	-2.881	-1.751	-0.664

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-0.189	0.241	0.410
{\rm log}_{10}(\tau_{AGN})\,	1.141	1.549	1.912

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.774	-1.802	-1.356
0.03-0.10 Gyr	-2.152	-1.331	-0.534
0.10-0.33 Gyr	-2.674	-1.468	-0.886
0.33-1.07 Gyr	-4.576	-2.071	-1.520
1.07-3.52 Gyr	-6.499	-3.110	-2.039
3.52-11.54 Gyr	-7.494	-3.364	-2.262
11.54-12.82 Gyr	-7.459	-3.221	-2.133

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.466	8.771	8.946
{\rm log}_{10}({\rm SFR})	-0.359	0.054	0.516
{\rm log}_{10}({\rm sSFR})	-9.142	-8.658	-8.075
{\rm stellar\ age}	0.467	4.897	8.474

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.810	-1.461	-0.720
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.685	-0.962	0.141

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.202	0.764	1.375
\delta	0.164	0.317	0.379
\tau_1/\tau_2	0.516	1.092	1.618
Q_{PAH}	1.617	3.834	5.719
U_{min}	4.284	11.040	18.711
{\rm log}_{10}(\gamma_e)\,	-2.356	-1.082	-0.355

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.664	-1.554	-0.333
{\rm log}_{10}(\tau_{AGN})\,	1.025	1.588	1.926

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.216	-1.782	-0.934
0.03-0.10 Gyr	-0.203	0.209	0.675
0.10-0.33 Gyr	-3.197	-1.336	-0.424
0.33-1.07 Gyr	-4.092	-1.797	-0.938
1.07-3.52 Gyr	-4.551	-1.884	-1.024
3.52-11.54 Gyr	-4.480	-1.894	-1.085
11.54-12.82 Gyr	-4.644	-1.501	-0.330