2025ahtu

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Information

Transient

Name: AT2025ahtu
Right ascension: 8h27m55.59s
Declination: 56d37m03.65s
Discovery Date: Dec. 15, 2025, 10:24 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.056

Host

Name:
Right ascension: 8h27m55.10s
Declination: 56d37m05.63s
Redshift: None
Photometric Redshift: 0.152

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	17.82
Transient MWEBV	processed	0.15
Host match	processed	5.05
Host information	processed	0.13
Host MWEBV	processed	0.1
Global aperture construction	processed	0.65
Global aperture photometry	processed	5.9
Validate global photometry	processed	1.98
Global host SED inference	processed	496.5
Local aperture photometry	processed	5.45
Validate local photometry	no valid phot	0.03
Local host SED inference	not processed	None

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) = 8h27m55.59s, 56d37m03.65s
semi major axis, semi minor axis (arcsec) = 0.76, 0.76
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys

Data not available

Aperture details

RA, DEC (J2000) = 8h27m55.07s, 56d37m05.91s
semi major axis, semi minor axis (arcsec) = 6.68, 6.36
angle (degrees, anti-clockwise from east) = -121.51

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	11.54	3.35	21.245	0.315	AB
GALEX_NUV	11.23	0.68	21.274	0.066	AB
SDSS_u	55.3	5.05	19.543	0.099	AB
SDSS_g	106.16	3.25	18.835	0.033	AB
PanSTARRS_g	108.36	1.27	18.813	0.013	AB
SDSS_r	189.9	4.93	18.204	0.028	AB
PanSTARRS_r	201.55	1.81	18.139	0.010	AB
SDSS_i	275.27	6.99	17.801	0.028	AB
PanSTARRS_i	277.04	1.73	17.794	0.007	AB
PanSTARRS_z	338.28	4.65	17.577	0.015	AB
SDSS_z	286.35	19.48	17.758	0.074	AB
PanSTARRS_y	392.25	11.13	17.416	0.031	AB
2MASS_J	179.47	156.03	17.370	0.944	Vega
2MASS_H	596.59	236.63	15.593	0.431	Vega
2MASS_K	666.86	286.41	15.002	0.466	Vega
WISE_W1	216.72	12.53	15.361	0.063	Vega
WISE_W2	155.21	14.31	15.084	0.100	Vega
WISE_W3	405.06	73.33	12.207	0.197	Vega
WISE_W4	219.94	442.52	11.424	2.184	Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

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})\,	10.424	10.500	10.626
{\rm log}_{10}({\rm SFR})	0.531	0.823	1.126
{\rm log}_{10}({\rm sSFR})	-9.995	-9.666	-9.366
{\rm stellar\ age}	6.279	7.043	10.075

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.124	-0.732	-0.499
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.675	-0.122	0.343

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.136	0.209	0.331
\delta	-0.891	-0.653	-0.351
\tau_1/\tau_2	0.501	0.969	1.465
Q_{PAH}	0.535	1.558	3.412
U_{min}	2.464	7.817	14.964
{\rm log}_{10}(\gamma_e)\,	-3.119	-2.203	-1.213

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.220	-2.919	-1.966
{\rm log}_{10}(\tau_{AGN})\,	1.019	1.502	1.908

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.948	-0.052	0.262
0.03-0.10 Gyr	0.657	0.968	1.279
0.10-0.32 Gyr	-2.235	0.031	0.546
0.32-1.03 Gyr	-2.892	-0.141	0.298
1.03-3.32 Gyr	-1.753	0.124	0.510
3.32-10.66 Gyr	0.113	0.640	0.798
10.66-11.84 Gyr	0.278	0.844	1.685