2026ktt results

Information

Transient
Name:AT2026ktt
Right ascension: 16h17m17.32s
Declination:23d37m30.49s
Discovery Date:April 25, 2026, 12:59 a.m.
Classification:None
Redshift:None
MW E(B-V):
Host
Name:1690712
Right ascension: 16h17m17.10s
Declination:23d37m35.86s
Redshift:None
Photometric Redshift:0.057
 

Cutout Download Report

Downloaded Unavailable
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_z
 DES_i
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 19.87
Transient MWEBV processed 0.05
Host match processed 4.47
Host information processed 0.1
Host MWEBV processed 0.06
Global aperture construction processed 0.65
Global aperture photometry processed 6.33
Validate global photometry processed 18.78
Global host SED inference processed 397.18
Local aperture photometry processed 5.94
Validate local photometry processed 0.03
Local host SED inference processed 428.42
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):16h17m17.32s, 23d37m30.49s
semi major axis, semi minor axis (arcsec):1.81, 1.81
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 7.92 1.64 21.653 0.225 AB
SDSS_g 22.25 1.29 20.532 0.063 AB
DES_g 23.96 0.22 20.451 0.010 AB
PanSTARRS_g 21.11 0.42 20.589 0.022 AB
SDSS_r 31.18 1.61 20.165 0.056 AB
PanSTARRS_r 31.87 0.52 20.142 0.018 AB
DES_r 36.69 0.58 19.989 0.017 AB
SDSS_i 39.65 2.07 19.904 0.057 AB
PanSTARRS_i 41.94 0.54 19.843 0.014 AB
PanSTARRS_z 43.56 1.25 19.802 0.031 AB
SDSS_z 55.27 7.5 19.544 0.147 AB
DES_z 51.37 1.68 19.623 0.036 AB
PanSTARRS_y 50.58 2.85 19.640 0.061 AB

Aperture details

RA, DEC (J2000):16h17m17.06s, 23d37m36.28s
semi major axis, semi minor axis (arcsec):15.14, 6.43
angle (degrees, anti-clockwise from east):-45.06
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 39.98 5.0 19.895 0.136 AB
GALEX_NUV 51.56 2.5 19.619 0.053 AB
SDSS_u 130.62 8.79 18.610 0.073 AB
SDSS_g 490.44 6.21 17.174 0.014 AB
DES_g 494.25 1.04 17.165 0.002 AB
PanSTARRS_g 486.78 2.28 17.182 0.005 AB
SDSS_r 753.29 8.12 16.708 0.012 AB
PanSTARRS_r 800.05 2.81 16.642 0.004 AB
DES_r 854.52 2.85 16.571 0.004 AB
SDSS_i 1044.3 10.97 16.353 0.011 AB
PanSTARRS_i 1059.49 2.93 16.337 0.003 AB
PanSTARRS_z 1174.87 6.84 16.225 0.006 AB
SDSS_z 1272.29 40.84 16.139 0.035 AB
DES_z 1279.83 8.54 16.132 0.007 AB
PanSTARRS_y 1423.82 15.43 16.016 0.012 AB
2MASS_J 1559.47 205.59 15.023 0.143 Vega
2MASS_H 1749.29 318.31 14.425 0.198 Vega
2MASS_K 2043.19 350.83 13.786 0.186 Vega
WISE_W1 891.01 20.77 13.826 0.025 Vega
WISE_W2 578.85 23.49 13.655 0.044 Vega
WISE_W3 1709.84 116.53 10.644 0.074 Vega
WISE_W4 2146.09 737.4 8.951 0.373 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.341 8.560 8.707
{\rm log}_{10}({\rm SFR}) -1.506 -0.943 -0.386
{\rm log}_{10}({\rm sSFR}) -10.098 -9.576 -8.819
{\rm stellar\ age} 1.252 4.555 6.457

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.455 -0.726 -0.151
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.744 -1.124 0.080

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.192 0.575 1.040
\delta -0.598 -0.137 0.242
\tau_1/\tau_2 0.742 1.070 1.445
Q_{PAH} 1.055 3.218 5.497
U_{min} 3.116 7.944 14.961
{\rm log}_{10}(\gamma_e)\, -3.139 -2.036 -0.712

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.639 -1.166 -0.218
{\rm log}_{10}(\tau_{AGN})\, 1.081 1.516 1.975

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.500 -1.091 -0.674
0.03-0.10 Gyr -1.645 -0.935 -0.294
0.10-0.33 Gyr -1.531 -0.851 -0.356
0.33-1.08 Gyr -1.861 -1.044 -0.699
1.08-3.56 Gyr -2.583 -1.381 -1.050
3.56-11.70 Gyr -3.009 -1.596 -1.214
11.70-13.00 Gyr -3.039 -1.660 -1.097

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.035 10.093 10.144
{\rm log}_{10}({\rm SFR}) -0.392 -0.216 -0.049
{\rm log}_{10}({\rm sSFR}) -10.487 -10.307 -10.133
{\rm stellar\ age} 5.017 6.102 6.965

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.574 -0.383 -0.239
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.004 0.210 0.362

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.101 0.172 0.288
\delta -0.559 -0.184 0.101
\tau_1/\tau_2 0.864 1.163 1.465
Q_{PAH} 0.733 1.969 4.102
U_{min} 2.064 6.848 13.410
{\rm log}_{10}(\gamma_e)\, -3.073 -1.883 -1.258

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.117 -2.958 -2.091
{\rm log}_{10}(\tau_{AGN})\, 0.998 1.425 1.877

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.190 -0.083 0.032
0.03-0.10 Gyr -0.591 -0.285 -0.043
0.10-0.33 Gyr -0.323 -0.046 0.174
0.33-1.08 Gyr 0.083 0.279 0.424
1.08-3.56 Gyr 0.124 0.314 0.484
3.56-11.70 Gyr -0.055 0.149 0.277
11.70-13.00 Gyr -0.432 0.083 0.451