2025zgt

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Information

Transient

Name: AT2025zgt
Right ascension: 21h39m44.04s
Declination: 17d37m45.72s
Discovery Date: Sept. 25, 2025, 10:46 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.144

Host

Name:
Right ascension: 21h39m44.21s
Declination: 17d37m47.97s
Redshift: None
Photometric Redshift: 0.085
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 18.68
Transient MWEBV processed 0.04
Host match processed 4.66
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.64
Global aperture photometry processed 5.27
Validate global photometry processed 15.16
Global host SED inference processed 497.57
Local aperture photometry processed 5.37
Validate local photometry processed 0.02
Local host SED inference processed 419.65
 

Cutout Download Report

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:
 

Aperture Photometry


Aperture details

RA, DEC (J2000) = 21h39m44.04s, 17d37m45.72s
semi major axis, semi minor axis (arcsec) = 1.26, 1.26
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 22.47 0.38 20.521 0.018 AB
DES_r 24.82 0.4 20.413 0.018 AB
PanSTARRS_i 34.14 0.37 20.067 0.012 AB
PanSTARRS_z 42.77 0.82 19.822 0.021 AB
DES_z 48.04 1.51 19.696 0.034 AB
PanSTARRS_y 57.1 2.37 19.508 0.045 AB

Aperture details

RA, DEC (J2000) = 21h39m44.21s, 17d37m48.03s
semi major axis, semi minor axis (arcsec) = 8.96, 6.2
angle (degrees, anti-clockwise from east) = -1.1

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 10.89 3.12 21.308 0.312 AB
GALEX_NUV 9.63 2.86 21.441 0.323 AB
SDSS_u 72.2 7.24 19.254 0.109 AB
SDSS_g 241.76 4.52 17.942 0.020 AB
PanSTARRS_g 286.19 1.87 17.758 0.007 AB
SDSS_r 625.26 7.51 16.910 0.013 AB
PanSTARRS_r 630.05 2.23 16.902 0.004 AB
SDSS_i 968.15 10.21 16.435 0.011 AB
PanSTARRS_i 978.05 2.17 16.424 0.002 AB
PanSTARRS_z 1297.82 4.83 16.117 0.004 AB
SDSS_z 1244.11 29.07 16.163 0.025 AB
PanSTARRS_y 1585.68 13.93 15.899 0.010 AB
2MASS_J 2173.26 163.87 14.662 0.082 Vega
2MASS_H 2612.01 238.01 13.990 0.099 Vega
2MASS_K 2784.96 335.7 13.450 0.131 Vega
WISE_W1 1035.2 25.54 13.663 0.027 Vega
WISE_W2 668.59 26.3 13.498 0.043 Vega
WISE_W3 869.92 101.57 11.377 0.127 Vega
WISE_W4 860.05 488.86 9.944 0.617 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.074 9.276 9.401
{\rm log}_{10}({\rm SFR}) -1.836 -1.067 -0.285
{\rm log}_{10}({\rm sSFR}) -11.108 -10.380 -9.523
{\rm stellar\ age} 3.895 6.629 8.533

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.272 -0.617 -0.154
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.480 -0.565 0.215

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.329 0.823 1.267
\delta -0.424 0.008 0.239
\tau_1/\tau_2 0.699 1.051 1.427
Q_{PAH} 0.937 2.990 5.285
U_{min} 3.073 8.233 15.202
{\rm log}_{10}(\gamma_e)\, -2.863 -1.766 -0.568

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.589 -0.657 -0.010
{\rm log}_{10}(\tau_{AGN})\, 0.982 1.473 1.946

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.938 -1.226 -0.660
0.03-0.10 Gyr -2.084 -1.067 -0.194
0.10-0.33 Gyr -2.086 -1.000 -0.257
0.33-1.07 Gyr -2.163 -0.911 -0.390
1.07-3.48 Gyr -2.185 -0.824 -0.483
3.48-11.38 Gyr -1.645 -0.685 -0.447
11.38-12.64 Gyr -1.643 -0.643 0.051

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.767 10.851 10.886
{\rm log}_{10}({\rm SFR}) -0.606 -0.167 0.244
{\rm log}_{10}({\rm sSFR}) -11.442 -10.997 -10.575
{\rm stellar\ age} 8.497 11.517 11.970

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.563 -0.444 -0.341
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.222 0.224 0.406

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.063 0.116 0.196
\delta -0.845 -0.568 -0.211
\tau_1/\tau_2 0.527 1.016 1.529
Q_{PAH} 0.629 1.794 3.906
U_{min} 2.433 7.859 14.947
{\rm log}_{10}(\gamma_e)\, -2.906 -1.569 -0.686

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.369 -3.348 -2.296
{\rm log}_{10}(\tau_{AGN})\, 1.136 1.618 1.977

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.769 -0.297 -0.049
0.03-0.10 Gyr -0.907 -0.125 0.353
0.10-0.33 Gyr -3.150 -0.994 -0.248
0.33-1.07 Gyr -4.477 -1.396 -0.562
1.07-3.48 Gyr -3.466 -1.320 -0.377
3.48-11.38 Gyr -1.336 0.144 0.975
11.38-12.64 Gyr 1.301 1.962 2.029