2020ukj

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Information

Transient

Name: AT2020ukj
Right ascension: 7h31m34.22s
Declination: 57d16m28.81s
Discovery Date: Sept. 28, 2020, 11:27 a.m.
Classification: TDE
Redshift: 0.066000
MW E(B-V): 0.054

Host

Name: 2020ukj
Right ascension: 7h31m34.20s
Declination: 57d16m29.03s
Redshift: None
Photometric Redshift: 0.088
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 2.35
Cutout download processed 6.07
Global aperture construction processed 0.64
Local aperture photometry processed 4.81
Global aperture photometry processed 4.75
Validate local photometry processed 0.02
Validate global photometry processed 13.76
Host information processed 0.08
Global host SED inference processed 464.55
Local host SED inference processed 522.31
Transient information processed 0.0
Transient MWEBV processed 0.05
Host MWEBV processed 0.1
Log transient processing status processed None
 

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) = 7h31m34.22s, 57d16m28.81s
semi major axis, semi minor axis (arcsec) = 1.58, 1.58
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error
DES_g 111.3 0.85 18.784 0.008
PanSTARRS_g 122.15 0.37 18.683 0.003
PanSTARRS_r 288.02 0.67 17.751 0.003
PanSTARRS_i 435.16 0.54 17.303 0.001
PanSTARRS_z 569.28 1.62 17.012 0.003
DES_z 706.22 4.51 16.778 0.007
PanSTARRS_y 642.55 3.2 16.880 0.005

Aperture details

RA, DEC (J2000) = 7h31m34.19s, 57d16m29.15s
semi major axis, semi minor axis (arcsec) = 7.61, 6.77
angle (degrees, anti-clockwise from east) = -35.98

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error
GALEX_FUV 5.63 2.43 22.023 0.468
GALEX_NUV -0.96 2.82
DES_g 319.92 1.47 17.637 0.005
PanSTARRS_g 353.93 1.38 17.528 0.004
PanSTARRS_r 766.82 2.46 16.688 0.003
PanSTARRS_i 1117.47 2.02 16.279 0.002
PanSTARRS_z 1418.43 6.62 16.020 0.005
DES_z 1496.78 6.94 15.962 0.005
PanSTARRS_y 1694.66 13.69 15.827 0.009
2MASS_J 2523.53 191.69 14.500 0.082
2MASS_H 3032.25 316.63 13.828 0.113
2MASS_K 2968.63 305.8 13.381 0.112
WISE_W1 1102.9 27.14 13.595 0.027
WISE_W2 650.59 31.6 13.528 0.053
WISE_W3 355.56 101.83 12.349 0.311
WISE_W4 622.69 537.94 10.294 0.938
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.191 10.308 10.434
{\rm log}_{10}({\rm SFR}) -3.201 -1.331 -0.480
{\rm log}_{10}({\rm sSFR}) -13.315 -11.630 -10.733
{\rm stellar\ age} 7.526 9.732 12.205

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.380 -0.853 -0.539
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.677 -0.868 0.067

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.511 0.882 1.177
\delta -0.630 -0.313 0.010
\tau_1/\tau_2 0.595 1.013 1.425
Q_{PAH} 0.822 2.900 5.497
U_{min} 3.104 8.799 16.343
{\rm log}_{10}(\gamma_e)\, -3.243 -1.738 -0.513

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.787 -1.476 -0.535
{\rm log}_{10}(\tau_{AGN})\, 0.953 1.440 1.931

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -4.262 -1.677 -0.710
0.03-0.10 Gyr -4.066 -1.446 -0.440
0.10-0.33 Gyr -4.663 -1.623 -0.402
0.33-1.08 Gyr -5.367 -1.861 -0.450
1.08-3.53 Gyr -4.141 -1.580 -0.066
3.53-11.59 Gyr -1.828 0.178 0.520
11.59-12.88 Gyr 0.016 1.145 1.552

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.536 10.643 10.700
{\rm log}_{10}({\rm SFR}) -6.301 -2.868 -1.683
{\rm log}_{10}({\rm sSFR}) -17.051 -13.525 -12.340
{\rm stellar\ age} 7.609 11.408 12.230

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.936 -0.732 -0.562
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.555 -0.658 0.127

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.228 0.348 0.483
\delta -0.786 -0.475 -0.208
\tau_1/\tau_2 0.466 0.900 1.357
Q_{PAH} 0.852 2.071 3.998
U_{min} 3.099 9.357 17.622
{\rm log}_{10}(\gamma_e)\, -3.053 -1.897 -0.867

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.326 -3.341 -2.371
{\rm log}_{10}(\tau_{AGN})\, 1.018 1.465 1.907

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -7.074 -3.051 -1.624
0.03-0.10 Gyr -7.504 -3.551 -1.789
0.10-0.33 Gyr -7.533 -3.973 -1.842
0.33-1.08 Gyr -6.886 -3.660 -1.628
1.08-3.53 Gyr -4.455 -2.438 -0.503
3.53-11.59 Gyr -2.117 0.148 0.845
11.59-12.88 Gyr 0.253 1.721 1.845