2025xtk

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Information

Transient

Name: AT2025xtk
Right ascension: 2h22m15.95s
Declination: -18d17m22.77s
Discovery Date: Sept. 16, 2025, 12:23 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.030

Host

Name:
Right ascension: 2h22m15.91s
Declination: -18d17m24.32s
Redshift: None
Photometric Redshift: 0.150

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	17.12
Transient MWEBV	processed	0.08
Host match	processed	6.91
Host information	processed	0.11
Host MWEBV	processed	0.04
Global aperture construction	processed	0.64
Global aperture photometry	processed	5.47
Validate global photometry	processed	14.09
Global host SED inference	processed	391.66
Local aperture photometry	processed	5.98
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) = 2h22m15.95s, -18d17m22.77s
semi major axis, semi minor axis (arcsec) = 0.77, 0.77
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) = 2h22m15.89s, -18d17m24.13s
semi major axis, semi minor axis (arcsec) = 6.36, 5.29
angle (degrees, anti-clockwise from east) = -50.75

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	20.14	3.79	20.640	0.204	AB
GALEX_NUV	26.17	2.75	20.356	0.114	AB
DES_g	171.92	0.47	18.312	0.003	AB
PanSTARRS_g	169.79	1.25	18.325	0.008	AB
PanSTARRS_r	288.47	1.67	17.750	0.006	AB
DES_r	310.33	0.65	17.670	0.002	AB
PanSTARRS_i	383.61	1.53	17.440	0.004	AB
PanSTARRS_z	455.06	4.39	17.255	0.010	AB
DES_z	478.66	2.65	17.200	0.006	AB
PanSTARRS_y	526.27	8.13	17.097	0.017	AB
2MASS_J	588.52	150.28	16.081	0.277	Vega
2MASS_H	1155.59	227.75	14.875	0.214	Vega
2MASS_K	743.54	297.19	14.884	0.434	Vega
WISE_W1	314.19	11.0	14.958	0.038	Vega
WISE_W2	228.71	13.88	14.663	0.066	Vega
WISE_W3	763.96	55.23	11.518	0.078	Vega
WISE_W4	70.28	302.91	12.663	4.679	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})\,	10.525	10.568	10.615
{\rm log}_{10}({\rm SFR})	0.199	0.548	0.832
{\rm log}_{10}({\rm sSFR})	-10.374	-10.021	-9.735
{\rm stellar\ age}	5.741	6.423	7.397

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.778	-0.548	-0.383
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.603	-0.201	0.335

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.097	0.172	0.283
\delta	-0.541	-0.145	0.161
\tau_1/\tau_2	0.695	1.065	1.427
Q_{PAH}	0.907	2.661	4.765
U_{min}	2.435	7.398	14.623
{\rm log}_{10}(\gamma_e)\,	-2.317	-1.240	-0.417

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.805	-2.219	-1.392
{\rm log}_{10}(\tau_{AGN})\,	1.130	1.557	1.913

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.951	-0.236	0.072
0.03-0.10 Gyr	0.294	0.687	0.985
0.10-0.32 Gyr	0.473	0.735	0.945
0.32-1.03 Gyr	0.260	0.571	0.750
1.03-3.32 Gyr	0.243	0.567	0.764
3.32-10.68 Gyr	0.563	0.721	0.821
10.68-11.87 Gyr	0.383	0.813	1.253