2026heh results

Information

Transient
Name:AT2026heh
Right ascension: 16h53m51.85s
Declination:64d09m50.69s
Discovery Date:March 19, 2026, 9:50 a.m.
Classification:None
Redshift:None
MW E(B-V):0.026
Host
Name:J165351.77+640950.61
Right ascension: 16h53m51.77s
Declination:64d09m50.61s
Redshift:None
Photometric Redshift:0.098
 

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_i
DES_z
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 17.11
Transient MWEBV processed 0.1
Host match processed 5.6
Host information processed 0.14
Host MWEBV processed 0.05
Global aperture construction processed 0.69
Global aperture photometry processed 4.87
Validate global photometry processed 16.46
Global host SED inference processed 397.36
Local aperture photometry processed 5.0
Validate local photometry processed 0.02
Local host SED inference processed 634.96
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):16h53m51.85s, 64d09m50.69s
semi major axis, semi minor axis (arcsec):1.11, 1.11
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_z 104.52 0.85 18.852 0.009 AB
PanSTARRS_y 108.61 2.01 18.810 0.020 AB

Aperture details

RA, DEC (J2000):16h53m51.74s, 64d09m50.70s
semi major axis, semi minor axis (arcsec):4.94, 2.43
angle (degrees, anti-clockwise from east):-64.37
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 1.65 0.41 23.356 0.271 AB
GALEX_NUV 2.94 0.36 22.729 0.131 AB
SDSS_u 19.14 2.53 20.695 0.144 AB
SDSS_g 73.43 2.41 19.235 0.036 AB
PanSTARRS_g 78.26 0.87 19.166 0.012 AB
SDSS_r 149.22 3.52 18.465 0.026 AB
PanSTARRS_r 139.94 1.04 18.535 0.008 AB
SDSS_i 220.55 4.5 18.041 0.022 AB
PanSTARRS_i 212.58 1.0 18.081 0.005 AB
PanSTARRS_z 260.85 2.5 17.859 0.010 AB
SDSS_z 318.44 11.1 17.642 0.038 AB
PanSTARRS_y 293.28 6.01 17.732 0.022 AB
2MASS_J 480.29 98.98 16.301 0.224 Vega
2MASS_H 617.71 151.03 15.555 0.265 Vega
2MASS_K 873.01 145.59 14.710 0.181 Vega
WISE_W1 204.96 15.65 15.422 0.083 Vega
WISE_W2 140.77 12.92 15.190 0.100 Vega
WISE_W3 418.78 35.81 12.171 0.093 Vega
WISE_W4 499.73 220.8 10.533 0.480 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.123 9.464 9.675
{\rm log}_{10}({\rm SFR}) -0.438 0.052 0.461
{\rm log}_{10}({\rm sSFR}) -9.971 -9.388 -8.812
{\rm stellar\ age} 2.425 6.395 8.769

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.634 -0.864 -0.230
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.071 -0.599 -0.026

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.246 0.486 0.867
\delta -0.771 -0.387 0.134
\tau_1/\tau_2 0.521 0.973 1.416
Q_{PAH} 0.502 1.925 4.501
U_{min} 3.249 8.300 15.501
{\rm log}_{10}(\gamma_e)\, -3.276 -2.162 -0.874

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.801 -2.004 -0.370
{\rm log}_{10}(\tau_{AGN})\, 1.049 1.579 2.021

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.411 0.046 0.369
0.03-0.10 Gyr -1.315 -0.057 0.540
0.10-0.33 Gyr -2.283 -0.662 0.064
0.33-1.06 Gyr -2.612 -0.846 -0.161
1.06-3.45 Gyr -2.468 -0.821 -0.332
3.45-11.24 Gyr -1.933 -0.592 -0.204
11.24-12.48 Gyr -1.822 -0.467 0.412

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.983 10.053 10.126
{\rm log}_{10}({\rm SFR}) -0.715 -0.384 -0.083
{\rm log}_{10}({\rm sSFR}) -10.819 -10.444 -10.107
{\rm stellar\ age} 6.091 6.949 8.021

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.969 -0.599 -0.343
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.565 -0.208 0.311

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.307 0.458 0.675
\delta -0.755 -0.498 -0.229
\tau_1/\tau_2 0.638 0.954 1.274
Q_{PAH} 0.799 1.835 3.441
U_{min} 2.422 6.878 14.059
{\rm log}_{10}(\gamma_e)\, -2.746 -1.903 -1.163

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.078 -2.723 -1.710
{\rm log}_{10}(\tau_{AGN})\, 1.021 1.463 1.870

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.798 -0.467 -0.247
0.03-0.10 Gyr -0.803 -0.373 0.005
0.10-0.33 Gyr -0.713 -0.266 0.105
0.33-1.06 Gyr -0.639 -0.210 0.075
1.06-3.45 Gyr -0.311 0.030 0.229
3.45-11.24 Gyr 0.001 0.193 0.321
11.24-12.48 Gyr -0.215 0.246 0.726