2026ark

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Information

Transient

Name: AT2026ark
Right ascension: 4h34m44.88s
Declination: -10d22m38.48s
Discovery Date: Jan. 19, 2026, 11:41 a.m.
Classification: None
Redshift: None
MW E(B-V):

Host

Name: 146402
Right ascension: 4h34m44.77s
Declination: -10d22m38.76s
Redshift: None
Photometric Redshift: 0.047
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 0.89
Transient MWEBV processed 0.04
Host match processed 3.57
Host information processed 0.18
Host MWEBV processed 0.05
Global aperture construction processed 0.61
Global aperture photometry processed 5.04
Validate global photometry processed 14.21
Global host SED inference processed 406.76
Local aperture photometry processed 4.68
Validate local photometry processed 0.02
Local host SED inference processed 482.44
 

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) = 4h34m44.88s, -10d22m38.48s
semi major axis, semi minor axis (arcsec) = 2.17, 2.17
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 236.71 0.65 17.964 0.003 AB
PanSTARRS_g 223.09 0.66 18.029 0.003 AB
PanSTARRS_r 458.94 0.77 17.246 0.002 AB
DES_r 557.18 1.83 17.035 0.004 AB
PanSTARRS_i 704.39 0.7 16.780 0.001 AB
PanSTARRS_z 885.6 2.17 16.532 0.003 AB
DES_z 1118.44 3.92 16.278 0.004 AB
PanSTARRS_y 1168.37 4.59 16.231 0.004 AB

Aperture details

RA, DEC (J2000) = 4h34m44.74s, -10d22m39.02s
semi major axis, semi minor axis (arcsec) = 13.52, 11.3
angle (degrees, anti-clockwise from east) = -179.04

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 29.47 4.35 20.226 0.160 AB
GALEX_NUV 46.84 4.28 19.723 0.099 AB
DES_g 1404.01 1.71 16.032 0.001 AB
PanSTARRS_g 1425.82 3.38 16.015 0.003 AB
DES_r 2984.51 4.44 15.213 0.002 AB
PanSTARRS_z 4866.29 11.62 14.682 0.003 AB
DES_z 5353.33 8.88 14.578 0.002 AB
PanSTARRS_y 6324.3 25.65 14.397 0.004 AB
2MASS_J 8266.23 295.37 13.212 0.039 Vega
2MASS_H 10258.28 480.68 12.505 0.051 Vega
2MASS_K 9857.54 573.48 12.078 0.063 Vega
WISE_W1 5196.21 42.68 11.912 0.009 Vega
WISE_W2 3694.76 47.47 11.642 0.014 Vega
WISE_W3 21699.73 199.98 7.885 0.010 Vega
WISE_W4 39658.53 1784.39 5.784 0.049 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})\, 9.824 9.990 10.139
{\rm log}_{10}({\rm SFR}) -0.295 0.176 0.558
{\rm log}_{10}({\rm sSFR}) -10.363 -9.829 -9.342
{\rm stellar\ age} 4.950 7.097 9.321

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.948 -0.365 0.001
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.237 -0.077 0.199

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.655 1.007 1.377
\delta -0.814 -0.491 -0.281
\tau_1/\tau_2 0.583 0.989 1.408
Q_{PAH} 0.333 1.880 3.446
U_{min} 2.253 7.151 13.955
{\rm log}_{10}(\gamma_e)\, -3.575 -2.711 -1.475

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.362 -2.931 -0.993
{\rm log}_{10}(\tau_{AGN})\, 0.981 1.485 1.968

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.029 0.330 0.624
0.03-0.10 Gyr -0.920 0.013 0.554
0.10-0.33 Gyr -1.300 -0.278 0.229
0.33-1.09 Gyr -1.347 -0.267 0.181
1.09-3.58 Gyr -1.171 -0.118 0.208
3.58-11.81 Gyr -0.569 0.002 0.264
11.81-13.13 Gyr -0.631 0.116 0.885

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.648 10.761 10.868
{\rm log}_{10}({\rm SFR}) -0.218 0.178 0.533
{\rm log}_{10}({\rm sSFR}) -11.004 -10.571 -10.219
{\rm stellar\ age} 5.615 7.283 8.813

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.874 -0.428 -0.091
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.306 -0.037 0.210

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.432 0.691 1.018
\delta -0.432 -0.194 -0.018
\tau_1/\tau_2 0.313 0.676 1.059
Q_{PAH} 0.480 1.274 2.826
U_{min} 2.701 7.718 14.748
{\rm log}_{10}(\gamma_e)\, -2.949 -1.918 -1.276

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.221 -1.442 -0.941
{\rm log}_{10}(\tau_{AGN})\, 1.352 1.801 2.047

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.155 0.564 0.900
0.03-0.10 Gyr -2.317 -0.495 0.203
0.10-0.33 Gyr -2.081 -0.460 0.194
0.33-1.09 Gyr -0.925 0.132 0.611
1.09-3.58 Gyr 0.065 0.792 1.095
3.58-11.81 Gyr 0.368 0.839 1.043
11.81-13.13 Gyr 0.018 0.857 1.515