2025xkj

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Information

Transient

Name: AT2025xkj
Right ascension: 23h28m40.16s
Declination: 19d40m18.79s
Discovery Date: Sept. 13, 2025, 9:39 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.101

Host

Name:
Right ascension: 23h28m40.26s
Declination: 19d40m28.90s
Redshift: 0.033073
Photometric Redshift: 0.033
 

Processing Status

Cutout download
 Cutout download
processed
 status
Transient information
Transient information
processed
 status
Transient MWEBV
Transient MWEBV
processed
 status
Host match
 Host match
processed
 status
Host information
Host information
processed
 status
Local aperture photometry
 Local aperture photometry
processed
 status
Validate local photometry
 Validate local photometry
processed
 status
Local host SED inference
Local host SED inference
processed
 status
Host MWEBV
Host MWEBV
processed
 status
Global host SED inference
Global host SED inference
processed
 status
Validate global photometry
Validate global photometr...
processed
 status
Global aperture construction
 Global aperture construct...
processed
 status
Global aperture photometry
 Global aperture photometr...
processed
 status
Task Name Status Time taken (s) Warning Flag
Host match processed 6.46
Cutout download processed 17.48
Global aperture construction processed 0.65
Local aperture photometry processed 6.95
Global aperture photometry processed 7.18
Validate local photometry processed 0.03
Validate global photometry processed 19.07
Host information processed 0.11
Global host SED inference processed 491.61
Local host SED inference processed 466.27
Transient information processed 0.0
Transient MWEBV processed 0.04
Host MWEBV processed 0.04
Processing status completed 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) = 23h28m40.16s, 19d40m18.79s
semi major axis, semi minor axis (arcsec) = 3.03, 3.03
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 29.13 3.71 20.239 0.138 AB
SDSS_g 53.15 2.17 19.586 0.044 AB
DES_g 59.45 0.33 19.465 0.006 AB
PanSTARRS_g 53.66 0.73 19.576 0.015 AB
SDSS_r 89.11 2.99 19.025 0.036 AB
PanSTARRS_r 90.4 0.84 19.010 0.010 AB
DES_r 104.86 0.92 18.848 0.010 AB
SDSS_i 118.35 3.83 18.717 0.035 AB
PanSTARRS_i 108.31 1.24 18.813 0.012 AB
PanSTARRS_z 137.76 2.28 18.552 0.018 AB
SDSS_z 145.88 13.26 18.490 0.099 AB
DES_z 156.73 1.92 18.412 0.013 AB
PanSTARRS_y 152.37 4.72 18.443 0.034 AB
2MASS_J 221.87 71.06 17.140 0.348 Vega
2MASS_H 183.84 116.1 16.871 0.686 Vega
2MASS_K 324.09 115.28 15.786 0.386 Vega

Aperture details

RA, DEC (J2000) = 23h28m40.21s, 19d40m29.10s
semi major axis, semi minor axis (arcsec) = 23.9, 22.49
angle (degrees, anti-clockwise from east) = -101.14

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 129.0 7.87 18.623 0.066 AB
PanSTARRS_g 1856.86 5.58 15.728 0.003 AB
DES_r 3785.96 5.69 14.955 0.002 AB
PanSTARRS_i 4490.85 9.39 14.769 0.002 AB
SDSS_z 5238.32 100.55 14.602 0.021 AB
2MASS_J 7050.72 546.06 13.385 0.084 Vega
2MASS_H 8347.79 892.47 12.728 0.116 Vega
2MASS_K 6785.08 886.14 12.483 0.142 Vega
WISE_W2 2567.83 65.41 12.037 0.028 Vega
WISE_W3 9481.68 264.73 8.784 0.030 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.210 8.607 8.811
{\rm log}_{10}({\rm SFR}) -1.131 -0.537 -0.131
{\rm log}_{10}({\rm sSFR}) -9.834 -9.128 -8.400
{\rm stellar\ age} 2.665 6.160 7.939

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.215 -0.497 -0.152
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.846 -1.330 0.236

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.320 0.623 0.934
\delta -0.595 -0.274 0.005
\tau_1/\tau_2 0.742 1.134 1.555
Q_{PAH} 0.568 1.924 4.144
U_{min} 3.169 8.842 16.318
{\rm log}_{10}(\gamma_e)\, -3.442 -2.225 -0.986

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.986 -2.272 -0.743
{\rm log}_{10}(\tau_{AGN})\, 0.953 1.437 1.923

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.204 -0.915 -0.601
0.03-0.10 Gyr -1.147 -0.436 -0.010
0.10-0.33 Gyr -2.289 -1.279 -0.764
0.33-1.09 Gyr -2.816 -1.539 -1.097
1.09-3.62 Gyr -2.627 -1.503 -1.107
3.62-11.98 Gyr -2.585 -1.443 -1.090
11.98-13.31 Gyr -2.799 -1.471 -0.785

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.365 10.466 10.577
{\rm log}_{10}({\rm SFR}) 0.020 0.315 0.626
{\rm log}_{10}({\rm sSFR}) -10.452 -10.131 -9.828
{\rm stellar\ age} 7.089 8.072 10.662

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.111 -0.771 -0.503
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.912 -1.351 0.275

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.232 0.445 0.696
\delta -0.396 0.049 0.280
\tau_1/\tau_2 0.359 0.765 1.240
Q_{PAH} 0.347 0.979 1.867
U_{min} 2.514 7.172 13.829
{\rm log}_{10}(\gamma_e)\, -3.667 -3.056 -2.271

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.417 -3.380 -1.980
{\rm log}_{10}(\tau_{AGN})\, 1.004 1.460 1.890

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.055 0.358 0.531
0.03-0.10 Gyr -0.313 0.282 0.711
0.10-0.33 Gyr -0.936 -0.110 0.405
0.33-1.09 Gyr -1.283 -0.261 0.209
1.09-3.62 Gyr -1.082 0.015 0.488
3.62-11.98 Gyr 0.154 0.562 0.715
11.98-13.31 Gyr 0.201 0.787 1.485