2026zhd results

Information

Transient
Name:AT2026zhd
Right ascension: 4h00m32.74s
Declination:-8d48m10.08s
Discovery Date:Aug. 18, 2026, 7:12 p.m.
Classification:None
Redshift:None
MW E(B-V):0.043
Host
Name:J040032.95-084809.48
Object ID:9906618140660718
Catalog Name:decals
Catalog Release:dr9
Right ascension: 4h00m32.95s
Declination:-8d48m09.48s
Redshift:None
Photometric Redshift:0.095
 
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 6.52
Transient MWEBV processed 0.09
Host match processed 5.76
Host information processed 0.13
Host MWEBV processed 0.08
Host spectrum download processed 0.14
Global aperture construction processed 0.59
Global aperture photometry processed 6.35
Validate global photometry processed 14.57
Global host SED inference processed 346.31
Local aperture photometry processed 5.81
Validate local photometry processed 0.02
Local host SED inference processed 403.03
 

Imaging data


 

Spectral Energy Distribution



 

Host Galaxy Spectrum


 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.070 9.334 9.499
{\rm log}_{10}({\rm SFR}) -1.536 -0.616 0.061
{\rm log}_{10}({\rm sSFR}) -10.861 -9.959 -9.087
{\rm stellar\ age} 2.273 6.411 7.816

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.631 -1.036 -0.396
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.511 -0.577 0.166

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.285 0.682 1.289
\delta -0.596 -0.100 0.245
\tau_1/\tau_2 0.665 0.968 1.288
Q_{PAH} 0.685 1.991 4.097
U_{min} 3.088 8.430 16.228
{\rm log}_{10}(\gamma_e)\, -2.887 -1.664 -0.561

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.150 -2.185 -0.248
{\rm log}_{10}(\tau_{AGN})\, 1.015 1.373 1.844

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.871 -0.646 -0.116
0.03-0.10 Gyr -1.805 -0.691 0.022
0.10-0.33 Gyr -1.888 -0.857 -0.102
0.33-1.06 Gyr -2.033 -0.921 -0.332
1.06-3.46 Gyr -1.911 -0.759 -0.391
3.46-11.26 Gyr -1.928 -0.598 -0.327
11.26-12.51 Gyr -2.283 -0.644 -0.038

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.723 10.824 10.914
{\rm log}_{10}({\rm SFR}) -0.109 0.281 0.575
{\rm log}_{10}({\rm sSFR}) -10.965 -10.558 -10.246
{\rm stellar\ age} 5.238 6.705 7.716

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.702 -0.499 -0.334
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.457 -0.616 0.112

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.145 0.258 0.396
\delta -0.794 -0.463 -0.030
\tau_1/\tau_2 0.638 0.946 1.254
Q_{PAH} 1.490 2.624 4.430
U_{min} 2.465 6.866 14.552
{\rm log}_{10}(\gamma_e)\, -3.347 -2.694 -1.889

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.115 -2.867 -1.886
{\rm log}_{10}(\tau_{AGN})\, 1.010 1.462 1.894

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.211 0.292 0.548
0.03-0.10 Gyr -0.267 0.248 0.626
0.10-0.33 Gyr -0.177 0.351 0.749
0.33-1.06 Gyr 0.021 0.555 0.930
1.06-3.46 Gyr 0.493 0.889 1.143
3.46-11.26 Gyr 0.626 0.955 1.119
11.26-12.51 Gyr 0.298 0.909 1.349
 

Aperture Photometry


Aperture details

RA, DEC (J2000):4h00m32.74s, -8d48m10.08s
semi major axis, semi minor axis (arcsec):1.13, 1.13
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_r 37.01 0.41 19.979 0.012 AB
PanSTARRS_i 50.69 0.29 19.638 0.006 AB
DES_i 50.31 0.92 19.646 0.020 AB
PanSTARRS_z 60.22 0.99 19.451 0.018 AB
DES_z 60.32 1.0 19.449 0.018 AB
PanSTARRS_y 70.95 2.24 19.273 0.034 AB

Aperture details

RA, DEC (J2000):4h00m32.93s, -8d48m09.39s
semi major axis, semi minor axis (arcsec):10.48, 8.69
angle (degrees, anti-clockwise from east):213.91
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 597.48 1.03 16.959 0.002 AB
PanSTARRS_g 589.19 2.51 16.974 0.005 AB
PanSTARRS_r 1070.59 2.3 16.326 0.002 AB
DES_r 1170.45 2.36 16.229 0.002 AB
PanSTARRS_i 1515.81 2.36 15.948 0.002 AB
DES_i 1611.95 5.43 15.882 0.004 AB
PanSTARRS_z 1782.15 8.19 15.773 0.005 AB
DES_z 1981.9 5.96 15.657 0.003 AB
PanSTARRS_y 2123.79 18.81 15.582 0.010 AB
2MASS_J 3002.53 220.05 14.311 0.080 Vega
2MASS_H 2775.15 383.5 13.924 0.150 Vega
2MASS_K 3460.6 423.06 13.214 0.133 Vega
WISE_W1 1412.92 24.74 13.326 0.019 Vega
WISE_W2 929.29 28.56 13.141 0.033 Vega
WISE_W3 2132.21 111.1 10.404 0.057 Vega
WISE_W4 2180.71 682.16 8.934 0.340 Vega