2026hdj results

Information

Transient
Name:AT2026hdj
Right ascension: 4h20m08.58s
Declination:-8d40m40.60s
Discovery Date:March 24, 2026, 3:15 a.m.
Classification:None
Redshift:None
MW E(B-V):0.084
Host
Name:
Right ascension: 4h20m08.61s
Declination:-8d40m38.13s
Redshift:None
Photometric Redshift:0.103
 

Cutout Download Report

Downloaded Unavailable
2MASS_H
2MASS_J
2MASS_K
WISE_W1
WISE_W2
WISE_W3
WISE_W4
GALEX_NUV
PanSTARRS_g
PanSTARRS_r
PanSTARRS_i
PanSTARRS_z
PanSTARRS_y
GALEX_FUV
SDSS_i
SDSS_r
SDSS_u
SDSS_z
SDSS_g
DES_g
DES_r
DES_i
DES_z
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 4.81
Transient MWEBV processed 0.11
Host match processed 5.54
Host information processed 0.16
Host MWEBV processed 0.05
Global aperture construction processed 0.62
Global aperture photometry processed 3.91
Validate global photometry processed 11.66
Global host SED inference processed 457.47
Local aperture photometry processed 3.7
Validate local photometry processed 0.02
Local host SED inference processed 681.57
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):4h20m08.58s, -8d40m40.60s
semi major axis, semi minor axis (arcsec):1.06, 1.06
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_y 86.8 1.93 19.054 0.024 AB

Aperture details

RA, DEC (J2000):4h20m08.59s, -8d40m37.98s
semi major axis, semi minor axis (arcsec):12.46, 6.86
angle (degrees, anti-clockwise from east):-27.82
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_NUV 43.05 5.47 19.815 0.138 AB
PanSTARRS_g 1486.04 2.54 15.970 0.002 AB
PanSTARRS_r 2216.25 3.29 15.536 0.002 AB
PanSTARRS_i 2516.77 2.99 15.398 0.001 AB
PanSTARRS_z 2966.44 6.52 15.219 0.002 AB
2MASS_J 6018.04 285.6 13.556 0.052 Vega
2MASS_H 6880.26 427.55 12.938 0.067 Vega
2MASS_K 6114.64 499.08 12.596 0.089 Vega
WISE_W1 2847.02 32.0 12.565 0.012 Vega
WISE_W2 1779.23 37.02 12.435 0.023 Vega
WISE_W3 4675.93 143.24 9.551 0.033 Vega
WISE_W4 5201.78 825.87 7.990 0.172 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.122 9.457 9.688
{\rm log}_{10}({\rm SFR}) -0.751 -0.152 0.380
{\rm log}_{10}({\rm sSFR}) -10.272 -9.643 -8.779
{\rm stellar\ age} 2.249 6.142 8.387

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.258 -0.344 0.051
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.224 -0.526 0.111

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.366 0.772 1.205
\delta -0.767 -0.349 0.025
\tau_1/\tau_2 0.486 0.887 1.352
Q_{PAH} 0.487 1.891 4.387
U_{min} 3.072 8.131 14.957
{\rm log}_{10}(\gamma_e)\, -3.461 -2.209 -0.823

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.629 -1.310 -0.067
{\rm log}_{10}(\tau_{AGN})\, 1.078 1.421 1.976

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.465 0.127 0.611
0.03-0.10 Gyr -1.913 -0.690 0.204
0.10-0.33 Gyr -2.882 -1.040 -0.221
0.33-1.06 Gyr -2.987 -0.859 -0.007
1.06-3.44 Gyr -2.635 -0.747 -0.271
3.44-11.18 Gyr -2.233 -0.599 -0.218
11.18-12.42 Gyr -1.983 -0.530 0.305

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.875 10.940 11.016
{\rm log}_{10}({\rm SFR}) 0.184 0.514 0.875
{\rm log}_{10}({\rm sSFR}) -10.757 -10.415 -10.022
{\rm stellar\ age} 2.007 3.450 4.854

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) 0.053 0.125 0.169
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.667 -0.503 -0.295

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.082 0.152 0.262
\delta -0.854 -0.549 -0.128
\tau_1/\tau_2 0.377 0.735 1.122
Q_{PAH} 1.010 2.674 4.793
U_{min} 2.364 6.729 13.467
{\rm log}_{10}(\gamma_e)\, -2.440 -1.434 -0.627

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.655 -4.023 -2.937
{\rm log}_{10}(\tau_{AGN})\, 1.115 1.688 2.019

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.404 0.718 0.979
0.03-0.10 Gyr -0.338 0.359 0.880
0.10-0.33 Gyr 0.359 1.043 1.630
0.33-1.06 Gyr 1.576 1.730 1.846
1.06-3.44 Gyr 1.017 1.301 1.481
3.44-11.18 Gyr -0.183 0.627 0.950
11.18-12.42 Gyr -0.600 0.469 1.082