2026ulf results

Information

Transient
Name:AT2026ulf
Right ascension: 16h11m43.84s
Declination:20d43m20.09s
Discovery Date:May 20, 2026, 8:26 a.m.
Classification:None
Redshift:None
MW E(B-V):0.052
Host
Name:J161143.80+204319.95
Object ID:9906629150838026
Catalog Name:decals
Catalog Release:dr9
Right ascension: 16h11m43.80s
Declination:20d43m19.95s
Redshift:None
Photometric Redshift:0.040
 
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 15.6
Transient MWEBV processed 0.13
Host match processed 6.08
Host information processed 0.06
Host MWEBV processed 0.06
Host spectrum download not processed None
Global aperture construction processed 1.11
Global aperture photometry processed 5.27
Validate global photometry processed 13.47
Global host SED inference processed 478.64
Local aperture photometry processed 4.92
Validate local photometry processed 0.02
Local host SED inference processed 507.39
 

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})\, 7.932 8.241 8.412
{\rm log}_{10}({\rm SFR}) -2.266 -1.215 -0.402
{\rm log}_{10}({\rm sSFR}) -10.624 -9.552 -8.375
{\rm stellar\ age} 0.326 4.345 6.797

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.614 -1.088 -0.467
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.631 -0.910 -0.029

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.153 0.489 1.014
\delta -0.525 -0.090 0.256
\tau_1/\tau_2 0.608 1.048 1.463
Q_{PAH} 0.762 2.457 5.281
U_{min} 3.351 9.417 17.384
{\rm log}_{10}(\gamma_e)\, -3.059 -1.842 -0.484

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.115 -0.603 -0.051
{\rm log}_{10}(\tau_{AGN})\, 1.037 1.590 1.988

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -3.401 -1.972 -1.373
0.03-0.10 Gyr -2.375 -1.117 -0.248
0.10-0.33 Gyr -2.325 -1.085 -0.513
0.33-1.09 Gyr -3.783 -1.591 -1.108
1.09-3.60 Gyr -4.564 -1.887 -1.412
3.60-11.90 Gyr -5.206 -2.078 -1.555
11.90-13.23 Gyr -5.238 -2.122 -1.324

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.067 8.442 8.679
{\rm log}_{10}({\rm SFR}) -0.639 -0.268 0.021
{\rm log}_{10}({\rm sSFR}) -9.223 -8.710 -8.093
{\rm stellar\ age} 0.368 4.078 7.061

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.614 -1.053 -0.562
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.763 -1.115 0.063

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.349 0.687 1.005
\delta 0.047 0.227 0.340
\tau_1/\tau_2 0.535 1.021 1.501
Q_{PAH} 1.281 3.074 5.130
U_{min} 3.515 10.359 18.143
{\rm log}_{10}(\gamma_e)\, -3.272 -2.013 -0.771

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.819 -1.959 -0.948
{\rm log}_{10}(\tau_{AGN})\, 0.950 1.402 1.844

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -3.955 -2.651 -1.641
0.03-0.10 Gyr -0.483 -0.107 0.182
0.10-0.33 Gyr -3.084 -1.112 -0.355
0.33-1.09 Gyr -3.934 -1.682 -0.989
1.09-3.60 Gyr -5.048 -2.162 -1.266
3.60-11.90 Gyr -5.184 -2.168 -1.362
11.90-13.23 Gyr -5.008 -2.010 -0.939
 

Aperture Photometry


Aperture details

RA, DEC (J2000):16h11m43.84s, 20d43m20.09s
semi major axis, semi minor axis (arcsec):2.55, 2.55
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 11.91 2.31 21.210 0.211 AB
SDSS_g 34.73 1.66 20.048 0.052 AB
PanSTARRS_g 30.21 0.65 20.200 0.024 AB
SDSS_r 40.73 1.96 19.875 0.052 AB
PanSTARRS_r 40.03 0.77 19.894 0.021 AB
SDSS_i 48.14 2.46 19.694 0.055 AB
PanSTARRS_i 48.19 0.81 19.692 0.018 AB
PanSTARRS_z 52.65 1.64 19.596 0.034 AB
SDSS_z 69.84 8.3 19.290 0.129 AB
PanSTARRS_y 55.83 3.62 19.533 0.070 AB

Aperture details

RA, DEC (J2000):16h11m43.82s, 20d43m20.61s
semi major axis, semi minor axis (arcsec):7.72, 2.58
angle (degrees, anti-clockwise from east):-144.3
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 12.35 2.91 21.171 0.256 AB
GALEX_NUV 16.87 2.26 20.832 0.145 AB
SDSS_u 17.35 4.01 20.802 0.251 AB
SDSS_g 62.73 2.37 19.406 0.041 AB
PanSTARRS_g 51.22 1.13 19.626 0.024 AB
SDSS_r 70.68 2.89 19.277 0.044 AB
PanSTARRS_r 67.8 1.33 19.322 0.021 AB
SDSS_i 80.21 3.77 19.139 0.051 AB
PanSTARRS_i 81.82 1.38 19.118 0.018 AB
PanSTARRS_z 86.77 2.79 19.054 0.035 AB
SDSS_z 119.16 14.33 18.710 0.131 AB
PanSTARRS_y 84.95 6.15 19.077 0.079 AB
2MASS_J -30.66 144.99 Vega
2MASS_H -87.95 223.99 Vega
2MASS_K 156.97 220.04 16.573 1.522 Vega