2025ahyi

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Information

Transient

Name: AT2025ahyi
Right ascension: 8h30m14.30s
Declination: 26d17m33.57s
Discovery Date: Dec. 20, 2025, 10:05 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.051

Host

Name:
Right ascension: 8h30m14.39s
Declination: 26d17m34.47s
Redshift: None
Photometric Redshift: 0.047

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	17.18
Transient MWEBV	processed	0.04
Host match	processed	5.11
Host information	processed	0.16
Host MWEBV	processed	0.11
Global aperture construction	processed	0.65
Global aperture photometry	processed	7.17
Validate global photometry	processed	3.59
Global host SED inference	processed	468.13
Local aperture photometry	processed	6.98
Validate local photometry	processed	0.03
Local host SED inference	processed	452.18

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) = 8h30m14.30s, 26d17m33.57s
semi major axis, semi minor axis (arcsec) = 2.17, 2.17
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	9.03	1.84	21.511	0.221	AB
SDSS_g	38.14	1.71	19.947	0.049	AB
DES_g	39.18	0.3	19.917	0.008	AB
PanSTARRS_g	39.86	0.6	19.899	0.016	AB
SDSS_r	53.29	2.11	19.583	0.043	AB
PanSTARRS_r	53.58	0.5	19.577	0.010	AB
DES_r	59.54	0.83	19.463	0.015	AB
SDSS_i	66.17	2.62	19.348	0.043	AB
PanSTARRS_i	61.09	0.69	19.435	0.012	AB
PanSTARRS_z	73.79	1.81	19.230	0.027	AB
SDSS_z	69.74	7.55	19.291	0.117	AB
DES_z	77.45	2.04	19.177	0.029	AB
PanSTARRS_y	78.61	4.15	19.161	0.057	AB

Aperture details

RA, DEC (J2000) = 8h30m14.38s, 26d17m35.18s
semi major axis, semi minor axis (arcsec) = 10.94, 5.13
angle (degrees, anti-clockwise from east) = -173.18

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	19.51	6.16	20.674	0.343	AB
SDSS_g	125.63	3.69	18.652	0.032	AB
DES_g	137.09	0.66	18.558	0.005	AB
PanSTARRS_g	142.5	2.03	18.515	0.015	AB
SDSS_r	182.76	4.86	18.245	0.029	AB
PanSTARRS_r	178.23	1.7	18.273	0.010	AB
DES_r	207.67	1.77	18.107	0.009	AB
SDSS_i	212.9	6.74	18.080	0.034	AB
PanSTARRS_i	212.3	2.34	18.083	0.012	AB
PanSTARRS_z	263.04	6.17	17.850	0.025	AB
SDSS_z	168.98	25.4	18.330	0.163	AB
DES_z	264.15	4.44	17.845	0.018	AB
PanSTARRS_y	285.27	14.21	17.762	0.054	AB
2MASS_J	347.41	151.84	16.653	0.475	Vega
2MASS_H	-61.57	231.68			Vega
2MASS_K	35.22	254.51	18.195	7.845	Vega
WISE_W1	110.76	17.54	16.090	0.172	Vega
WISE_W2	45.11	19.54	16.425	0.470	Vega
WISE_W3	243.44	84.57	12.760	0.377	Vega
WISE_W4	-301.15	474.35			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})\,	8.392	8.569	8.735
{\rm log}_{10}({\rm SFR})	-1.556	-1.181	-0.708
{\rm log}_{10}({\rm sSFR})	-10.209	-9.770	-9.182
{\rm stellar\ age}	2.353	5.117	7.023

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.351	-0.695	-0.255
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.678	-1.351	-0.790

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.137	0.324	0.644
\delta	-0.699	-0.275	0.106
\tau_1/\tau_2	0.757	1.077	1.416
Q_{PAH}	1.161	3.517	5.558
U_{min}	3.118	8.042	14.949
{\rm log}_{10}(\gamma_e)\,	-2.937	-1.857	-0.631

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.170	-1.038	-0.399
{\rm log}_{10}(\tau_{AGN})\,	1.033	1.532	1.931

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.457	-1.193	-0.899
0.03-0.10 Gyr	-1.732	-1.200	-0.629
0.10-0.33 Gyr	-1.591	-1.084	-0.599
0.33-1.09 Gyr	-1.603	-1.074	-0.720
1.09-3.58 Gyr	-1.858	-1.296	-1.054
3.58-11.81 Gyr	-2.283	-1.516	-1.178
11.81-13.13 Gyr	-2.467	-1.569	-1.033

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.155	9.283	9.395
{\rm log}_{10}({\rm SFR})	-1.169	-0.882	-0.606
{\rm log}_{10}({\rm sSFR})	-10.477	-10.145	-9.838
{\rm stellar\ age}	5.465	7.117	8.710

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.309	-0.978	-0.677
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.139	-0.752	-0.328

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.109	0.245	0.406
\delta	-0.694	-0.227	0.146
\tau_1/\tau_2	0.727	1.124	1.531
Q_{PAH}	0.526	1.833	3.802
U_{min}	2.605	7.199	14.217
{\rm log}_{10}(\gamma_e)\,	-2.591	-1.435	-0.476

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.726	-2.028	-0.947
{\rm log}_{10}(\tau_{AGN})\,	1.211	1.670	1.959

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.937	-0.732	-0.540
0.03-0.10 Gyr	-1.593	-0.976	-0.593
0.10-0.33 Gyr	-1.467	-0.914	-0.540
0.33-1.09 Gyr	-1.381	-0.834	-0.429
1.09-3.58 Gyr	-1.220	-0.762	-0.495
3.58-11.81 Gyr	-0.988	-0.643	-0.458
11.81-13.13 Gyr	-1.140	-0.541	0.028