2025afch

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Information

Transient

Name: AT2025afch
Right ascension: 17h11m41.48s
Declination: 78d21m14.93s
Discovery Date: Nov. 26, 2025, 2:17 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.038

Host

Name:
Right ascension: 17h11m41.71s
Declination: 78d21m15.25s
Redshift: None
Photometric Redshift: 0.097
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 16.26
Transient MWEBV processed 0.04
Host match processed 5.52
Host information processed 0.21
Host MWEBV processed 0.05
Global aperture construction processed 0.63
Global aperture photometry processed 5.28
Validate global photometry processed 14.98
Global host SED inference processed 581.04
Local aperture photometry processed 5.15
Validate local photometry processed 0.02
Local host SED inference processed 498.03
 

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) = 17h11m41.48s, 78d21m14.93s
semi major axis, semi minor axis (arcsec) = 1.12, 1.12
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_i 24.14 0.46 20.443 0.021 AB
PanSTARRS_z 27.24 1.04 20.312 0.041 AB
PanSTARRS_y 23.97 2.48 20.451 0.112 AB

Aperture details

RA, DEC (J2000) = 17h11m41.62s, 78d21m15.40s
semi major axis, semi minor axis (arcsec) = 5.34, 2.52
angle (degrees, anti-clockwise from east) = -67.65

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 10.84 2.32 21.312 0.233 AB
GALEX_NUV 6.66 0.53 21.841 0.086 AB
SDSS_u 10.39 3.12 21.358 0.326 AB
SDSS_g 40.86 2.02 19.872 0.054 AB
PanSTARRS_g 44.75 1.04 19.773 0.025 AB
SDSS_r 67.97 2.85 19.319 0.046 AB
PanSTARRS_r 69.83 1.44 19.290 0.022 AB
SDSS_i 87.85 3.98 19.041 0.049 AB
PanSTARRS_i 81.53 1.46 19.122 0.019 AB
PanSTARRS_z 98.5 3.3 18.916 0.036 AB
SDSS_z 112.41 11.6 18.773 0.112 AB
PanSTARRS_y 87.97 7.87 19.039 0.097 AB
2MASS_J 78.48 122.94 18.268 1.701 Vega
2MASS_H 71.89 187.96 17.891 2.839 Vega
2MASS_K 194.24 219.38 16.341 1.226 Vega
WISE_W1 41.89 6.44 17.146 0.167 Vega
WISE_W2 31.91 9.22 16.801 0.314 Vega
WISE_W3 96.38 29.32 13.766 0.330 Vega
WISE_W4 1.2 145.68 17.078 131.287 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})\, 8.666 8.948 9.135
{\rm log}_{10}({\rm SFR}) -1.719 -1.070 -0.439
{\rm log}_{10}({\rm sSFR}) -10.687 -10.055 -9.193
{\rm stellar\ age} 2.155 5.962 8.209

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.396 -0.783 -0.272
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.300 -0.707 -0.168

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.174 0.507 0.957
\delta -0.617 -0.128 0.237
\tau_1/\tau_2 0.522 0.911 1.340
Q_{PAH} 1.044 3.021 5.428
U_{min} 3.023 8.109 15.268
{\rm log}_{10}(\gamma_e)\, -2.862 -1.670 -0.565

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.961 -0.366 0.152
{\rm log}_{10}(\tau_{AGN})\, 1.065 1.559 1.988

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.654 -1.008 -0.513
0.03-0.10 Gyr -2.309 -1.273 -0.436
0.10-0.33 Gyr -2.315 -1.284 -0.431
0.33-1.06 Gyr -2.375 -1.144 -0.464
1.06-3.45 Gyr -2.622 -1.209 -0.781
3.45-11.24 Gyr -2.403 -1.108 -0.740
11.24-12.49 Gyr -2.296 -1.082 -0.278

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.353 9.418 9.496
{\rm log}_{10}({\rm SFR}) -1.046 -0.834 -0.617
{\rm log}_{10}({\rm sSFR}) -10.472 -10.252 -10.037
{\rm stellar\ age} 5.000 6.195 7.260

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.014 -0.604 -0.344
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.611 -1.082 -0.115

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.018 0.058 0.130
\delta -0.378 0.080 0.314
\tau_1/\tau_2 0.556 0.879 1.221
Q_{PAH} 1.353 2.788 4.588
U_{min} 3.891 9.276 16.119
{\rm log}_{10}(\gamma_e)\, -1.396 -0.645 -0.202

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.977 -2.485 -1.328
{\rm log}_{10}(\tau_{AGN})\, 1.146 1.628 1.978

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.156 -0.917 -0.760
0.03-0.10 Gyr -1.105 -0.796 -0.518
0.10-0.33 Gyr -0.853 -0.546 -0.287
0.33-1.06 Gyr -0.727 -0.430 -0.232
1.06-3.45 Gyr -0.642 -0.418 -0.230
3.45-11.24 Gyr -0.701 -0.496 -0.347
11.24-12.49 Gyr -0.970 -0.456 -0.045