2025xtj

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Information

Transient

Name: AT2025xtj
Right ascension: 23h31m54.14s
Declination: 23d19m48.42s
Discovery Date: Sept. 16, 2025, 8:41 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.054

Host

Name:
Right ascension: 23h31m54.15s
Declination: 23d19m48.62s
Redshift: None
Photometric Redshift: 0.144

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	5.36
Cutout download	processed	17.39
Global aperture construction	processed	0.63
Local aperture photometry	processed	6.74
Global aperture photometry	processed	6.27
Validate local photometry	no valid phot	0.03
Validate global photometry	processed	17.78
Host information	processed	0.11
Global host SED inference	processed	402.95
Local host SED inference	not processed	None
Transient information	processed	0.0
Transient MWEBV	processed	0.09
Host MWEBV	processed	0.04
Processing status	blocked	N/A	N/A

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) = 23h31m54.14s, 23d19m48.42s
semi major axis, semi minor axis (arcsec) = 0.79, 0.79
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) = 23h31m54.14s, 23d19m48.71s
semi major axis, semi minor axis (arcsec) = 4.67, 3.99
angle (degrees, anti-clockwise from east) = -149.87

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	2.38	1.09	22.958	0.498	AB
GALEX_NUV	6.2	1.35	21.919	0.236	AB
SDSS_u	7.24	3.01	21.750	0.451	AB
SDSS_g	35.09	2.24	20.037	0.069	AB
DES_g	42.42	0.56	19.831	0.014	AB
PanSTARRS_g	41.72	0.8	19.849	0.021	AB
SDSS_r	58.05	2.73	19.491	0.051	AB
PanSTARRS_r	67.91	1.1	19.320	0.018	AB
DES_r	73.02	1.1	19.241	0.016	AB
SDSS_i	84.42	3.51	19.084	0.045	AB
PanSTARRS_i	88.56	1.47	19.032	0.018	AB
PanSTARRS_z	106.04	2.9	18.836	0.030	AB
SDSS_z	154.56	10.39	18.427	0.073	AB
DES_z	103.7	2.94	18.861	0.031	AB
PanSTARRS_y	115.04	6.33	18.748	0.060	AB
2MASS_J	145.3	112.73	17.599	0.842	Vega
2MASS_H	175.53	176.61	16.921	1.092	Vega
2MASS_K	80.01	213.46	17.304	2.897	Vega
WISE_W1	56.05	9.33	16.830	0.181	Vega
WISE_W2	13.07	12.49	17.771	1.038	Vega
WISE_W3	27.93	60.96	15.111	2.370	Vega
WISE_W4	456.75	444.83	10.631	1.057	Vega

Imaging data

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})\,	9.701	9.857	9.977
{\rm log}_{10}({\rm SFR})	-0.961	0.051	0.582
{\rm log}_{10}({\rm sSFR})	-10.717	-9.844	-9.193
{\rm stellar\ age}	3.708	5.869	7.361

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.550	-1.014	-0.419
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.626	-0.720	0.188

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.193	0.398	0.637
\delta	-0.543	-0.184	0.117
\tau_1/\tau_2	0.546	0.962	1.388
Q_{PAH}	0.885	2.596	4.767
U_{min}	3.120	8.656	16.147
{\rm log}_{10}(\gamma_e)\,	-2.556	-1.554	-0.559

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.690	-1.705	-0.730
{\rm log}_{10}(\tau_{AGN})\,	1.147	1.574	1.890

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.133	-1.424	-0.716
0.03-0.10 Gyr	-0.865	0.201	0.743
0.10-0.32 Gyr	-0.189	0.357	0.745
0.32-1.04 Gyr	-1.122	-0.066	0.270
1.04-3.34 Gyr	-1.393	-0.158	0.121
3.34-10.74 Gyr	-0.899	-0.112	0.122
10.74-11.93 Gyr	-1.101	-0.050	0.572