2025zht

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Information

Transient

Name: AT2025zht
Right ascension: 22h09m17.51s
Declination: -5d48m26.03s
Discovery Date: Sept. 30, 2025, 4:59 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.053

Host

Name:
Right ascension: 22h09m18.34s
Declination: -5d48m32.46s
Redshift: None
Photometric Redshift: 0.048

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	1.98
Transient MWEBV	processed	0.05
Host match	processed	4.9
Host information	processed	0.09
Host MWEBV	processed	0.06
Global aperture construction	processed	0.63
Global aperture photometry	processed	6.72
Validate global photometry	processed	18.02
Global host SED inference	processed	391.98
Local aperture photometry	processed	6.69
Validate local photometry	processed	0.03
Local host SED inference	failed	408.17

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) = 22h09m17.51s, -5d48m26.03s
semi major axis, semi minor axis (arcsec) = 2.13, 2.13
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	2.22	1.84	23.035	0.902	AB
SDSS_g	2.96	0.79	22.720	0.289	AB
DES_g	1.45	0.16	23.493	0.116	AB
PanSTARRS_g	0.82	0.4	24.116	0.534	AB
SDSS_r	-0.83	1.09			AB
PanSTARRS_r	0.8	0.49	24.141	0.665	AB
SDSS_i	1.31	1.82	23.607	1.513	AB
PanSTARRS_i	2.22	0.58	23.035	0.285	AB
PanSTARRS_z	-0.52	1.5			AB
SDSS_z	4.79	6.09	22.200	1.381	AB
DES_z	2.32	0.57	22.987	0.265	AB
PanSTARRS_y	4.02	3.42	22.389	0.923	AB

Aperture details

RA, DEC (J2000) = 22h09m18.32s, -5d48m32.17s
semi major axis, semi minor axis (arcsec) = 14.18, 7.35
angle (degrees, anti-clockwise from east) = -66.55

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	55.25	5.61	19.544	0.110	AB
SDSS_u	113.86	9.06	18.759	0.086	AB
SDSS_g	324.87	5.56	17.621	0.019	AB
DES_g	274.77	1.0	17.803	0.004	AB
PanSTARRS_g	290.97	1.94	17.740	0.007	AB
SDSS_r	380.18	7.07	17.450	0.020	AB
PanSTARRS_r	392.23	2.37	17.416	0.007	AB
SDSS_i	503.44	10.13	17.145	0.022	AB
PanSTARRS_z	500.14	7.13	17.152	0.015	AB
SDSS_z	588.25	29.65	16.976	0.055	AB
DES_z	505.44	4.57	17.141	0.010	AB
PanSTARRS_y	634.93	16.47	16.893	0.028	AB
2MASS_J	517.83	290.3	16.220	0.609	Vega
2MASS_K	376.96	481.06	15.621	1.386	Vega
WISE_W2	188.53	22.53	14.873	0.130	Vega
WISE_W3	565.91	121.58	11.844	0.233	Vega
WISE_W4	473.52	641.52	10.592	1.471	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})\,	9.314	9.404	9.526
{\rm log}_{10}({\rm SFR})	-0.667	-0.300	0.050
{\rm log}_{10}({\rm sSFR})	-10.134	-9.725	-9.323
{\rm stellar\ age}	3.687	5.672	6.962

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.091	-0.638	-0.310
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	0.008	0.185	0.344

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.076	0.165	0.325
\delta	-0.315	0.091	0.302
\tau_1/\tau_2	0.644	0.955	1.263
Q_{PAH}	0.421	1.368	3.314
U_{min}	2.794	7.448	13.444
{\rm log}_{10}(\gamma_e)\,	-2.938	-1.808	-1.098

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.113	-2.895	-1.929
{\rm log}_{10}(\tau_{AGN})\,	0.990	1.435	1.863

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.750	-0.493	-0.304
0.03-0.10 Gyr	-0.730	-0.241	0.172
0.10-0.33 Gyr	-0.527	-0.131	0.147
0.33-1.09 Gyr	-0.572	-0.234	-0.002
1.09-3.58 Gyr	-0.724	-0.435	-0.194
3.58-11.80 Gyr	-1.046	-0.608	-0.391
11.80-13.12 Gyr	-1.285	-0.620	-0.155