2025zkb results

Information

Transient
Name:AT2025zkb
Right ascension: 18h42m56.90s
Declination:54d08m09.31s
Discovery Date:Sept. 25, 2025, 3:16 a.m.
Classification:None
Redshift:None
MW E(B-V):0.038
Host
Name:
Right ascension: 18h42m56.90s
Declination:54d08m09.08s
Redshift:None
Photometric Redshift:0.089
 

Cutout Download Report

Downloaded Unavailable
2MASS_H
2MASS_J
2MASS_K
WISE_W1
WISE_W2
WISE_W3
WISE_W4
PanSTARRS_g
PanSTARRS_r
PanSTARRS_i
PanSTARRS_z
PanSTARRS_y
 GALEX_NUV
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 3.08
Transient MWEBV processed 0.04
Host match processed 4.48
Host information processed 0.12
Host MWEBV processed 0.04
Global aperture construction processed 0.66
Global aperture photometry processed 4.03
Validate global photometry processed 8.44
Global host SED inference processed 523.17
Local aperture photometry processed 4.02
Validate local photometry processed 0.02
Local host SED inference processed 440.38
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):18h42m56.90s, 54d08m09.31s
semi major axis, semi minor axis (arcsec):1.21, 1.21
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_r 34.63 0.34 20.051 0.011 AB
PanSTARRS_i 46.17 0.41 19.739 0.010 AB
PanSTARRS_z 52.98 0.85 19.590 0.017 AB
PanSTARRS_y 51.0 2.1 19.631 0.045 AB

Aperture details

RA, DEC (J2000):18h42m56.89s, 54d08m09.39s
semi major axis, semi minor axis (arcsec):7.25, 5.48
angle (degrees, anti-clockwise from east):-35.31
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 237.13 1.36 17.963 0.006 AB
PanSTARRS_r 324.53 1.68 17.622 0.006 AB
PanSTARRS_i 372.3 2.08 17.473 0.006 AB
PanSTARRS_z 373.95 4.35 17.468 0.013 AB
PanSTARRS_y 409.5 10.84 17.369 0.029 AB
WISE_W3 144.93 40.34 13.323 0.302 Vega
WISE_W4 6.24 210.61 15.291 36.620 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.012 9.180 9.310
{\rm log}_{10}({\rm SFR}) -1.831 -1.211 -0.574
{\rm log}_{10}({\rm sSFR}) -11.046 -10.406 -9.671
{\rm stellar\ age} 3.511 6.346 8.080

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.669 -1.095 -0.528
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.538 -0.828 -0.006

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.158 0.402 0.872
\delta -0.614 -0.240 0.167
\tau_1/\tau_2 0.640 1.017 1.365
Q_{PAH} 0.852 2.557 5.004
U_{min} 2.843 7.997 15.124
{\rm log}_{10}(\gamma_e)\, -3.002 -1.754 -0.588

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.576 -0.316 0.136
{\rm log}_{10}(\tau_{AGN})\, 1.069 1.475 1.974

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.003 -1.367 -0.880
0.03-0.10 Gyr -2.031 -1.234 -0.491
0.10-0.33 Gyr -1.824 -1.059 -0.285
0.33-1.06 Gyr -1.864 -0.926 -0.328
1.06-3.47 Gyr -1.830 -0.822 -0.515
3.47-11.33 Gyr -1.514 -0.763 -0.528
11.33-12.59 Gyr -1.700 -0.789 -0.137

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.595 9.704 9.847
{\rm log}_{10}({\rm SFR}) -1.057 -0.333 0.281
{\rm log}_{10}({\rm sSFR}) -10.806 -10.058 -9.446
{\rm stellar\ age} 1.387 3.353 5.681

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.378 -0.801 -0.401
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.590 -0.467 0.240

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.045 0.118 0.237
\delta -0.786 -0.350 0.154
\tau_1/\tau_2 0.685 1.089 1.473
Q_{PAH} 0.805 2.124 4.253
U_{min} 2.867 7.971 15.175
{\rm log}_{10}(\gamma_e)\, -2.906 -1.873 -0.935

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.078 -2.837 -1.809
{\rm log}_{10}(\tau_{AGN})\, 0.970 1.395 1.858

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.057 -0.491 -0.157
0.03-0.10 Gyr -1.613 -0.304 0.407
0.10-0.33 Gyr -0.598 0.361 0.726
0.33-1.06 Gyr -0.127 0.447 0.766
1.06-3.47 Gyr -1.017 -0.205 0.196
3.47-11.33 Gyr -1.937 -0.660 -0.162
11.33-12.59 Gyr -2.213 -0.754 -0.011