2025ssj results

Information

Transient
Name:AT2025ssj
Right ascension: 16h20m20.67s
Declination:1d13m38.91s
Discovery Date:July 26, 2025, 7:15 a.m.
Classification:None
Redshift:None
MW E(B-V):0.067
Host
Name:57868
Right ascension: 16h20m20.77s
Declination:1d13m42.33s
Redshift:0.032240
Photometric Redshift:None
 

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
SDSS_i
SDSS_r
SDSS_u
SDSS_z
SDSS_g
DES_g
DES_r
DES_z
 GALEX_NUV
GALEX_FUV
DES_i
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 30.43
Transient MWEBV processed 0.15
Host match processed 4.68
Host information processed 0.15
Host MWEBV processed 0.04
Global aperture construction processed 0.67
Global aperture photometry processed 6.54
Validate global photometry processed 17.58
Global host SED inference processed 430.74
Local aperture photometry processed 7.01
Validate local photometry processed 0.03
Local host SED inference processed 540.53
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):16h20m20.67s, 1d13m38.91s
semi major axis, semi minor axis (arcsec):3.11, 3.11
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 54.46 2.82 19.560 0.056 AB
SDSS_g 189.18 3.67 18.208 0.021 AB
DES_g 200.4 0.93 18.145 0.005 AB
PanSTARRS_g 192.54 1.01 18.189 0.006 AB
SDSS_r 306.93 4.77 17.682 0.017 AB
PanSTARRS_r 302.71 0.95 17.697 0.003 AB
DES_r 337.71 1.95 17.579 0.006 AB
SDSS_i 398.57 5.72 17.399 0.016 AB
PanSTARRS_i 388.71 0.87 17.426 0.002 AB
PanSTARRS_z 419.44 2.45 17.343 0.006 AB
SDSS_z 478.24 10.88 17.201 0.025 AB
DES_z 506.52 6.79 17.139 0.015 AB
PanSTARRS_y 549.65 6.91 17.050 0.014 AB
2MASS_J 688.18 78.42 15.911 0.124 Vega
2MASS_H 702.29 122.78 15.416 0.190 Vega
2MASS_K 585.67 131.81 15.143 0.244 Vega

Aperture details

RA, DEC (J2000):16h20m20.79s, 1d13m42.36s
semi major axis, semi minor axis (arcsec):19.2, 17.3
angle (degrees, anti-clockwise from east):-50.75
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 535.3 14.24 17.079 0.029 AB
SDSS_g 2142.07 13.12 15.573 0.007 AB
DES_g 2201.48 3.25 15.543 0.002 AB
PanSTARRS_g 2139.52 5.72 15.574 0.003 AB
SDSS_r 3215.25 17.05 15.132 0.006 AB
PanSTARRS_r 3178.17 5.32 15.145 0.002 AB
DES_r 3572.75 6.75 15.017 0.002 AB
SDSS_i 4185.9 22.19 14.846 0.006 AB
PanSTARRS_i 4142.64 4.88 14.857 0.001 AB
PanSTARRS_z 4202.33 14.04 14.841 0.004 AB
SDSS_z 4902.33 57.95 14.674 0.013 AB
DES_z 5042.66 22.22 14.643 0.005 AB
PanSTARRS_y 5682.01 40.13 14.514 0.008 AB
2MASS_J 5815.23 462.22 13.594 0.086 Vega
2MASS_H 6867.78 725.12 12.940 0.115 Vega
2MASS_K 6908.61 779.87 12.464 0.123 Vega
WISE_W1 3270.15 45.93 12.415 0.015 Vega
WISE_W2 2047.01 52.93 12.283 0.028 Vega
WISE_W3 9728.25 216.65 8.756 0.024 Vega
WISE_W4 11521.43 1232.36 7.126 0.116 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.980 9.215 9.370
{\rm log}_{10}({\rm SFR}) -1.137 -0.605 -0.183
{\rm log}_{10}({\rm sSFR}) -10.458 -9.778 -9.264
{\rm stellar\ age} 3.043 6.097 8.446

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.749 -1.324 -0.652
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.452 -0.104 0.083

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.265 0.649 1.048
\delta -0.590 -0.201 0.072
\tau_1/\tau_2 0.718 1.054 1.411
Q_{PAH} 0.402 1.618 3.191
U_{min} 2.589 7.298 14.111
{\rm log}_{10}(\gamma_e)\, -3.558 -2.693 -1.431

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.338 -2.830 -0.400
{\rm log}_{10}(\tau_{AGN})\, 0.976 1.329 1.866

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.961 -0.628 -0.345
0.03-0.10 Gyr -1.557 -0.615 -0.107
0.10-0.33 Gyr -1.699 -0.549 0.007
0.33-1.10 Gyr -1.808 -0.738 -0.289
1.10-3.62 Gyr -1.722 -0.853 -0.494
3.62-11.99 Gyr -1.654 -0.856 -0.497
11.99-13.32 Gyr -1.733 -0.833 -0.157

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.925 10.098 10.319
{\rm log}_{10}({\rm SFR}) -0.034 0.273 0.520
{\rm log}_{10}({\rm sSFR}) -10.300 -9.829 -9.456
{\rm stellar\ age} 3.053 5.803 7.654

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.321 -0.863 -0.513
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.325 -0.182 -0.089

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.407 0.527 0.660
\delta -0.648 -0.300 0.214
\tau_1/\tau_2 0.477 0.816 1.155
Q_{PAH} 0.252 0.557 1.070
U_{min} 2.453 6.426 12.381
{\rm log}_{10}(\gamma_e)\, -3.701 -3.237 -2.631

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.332 -3.486 -2.705
{\rm log}_{10}(\tau_{AGN})\, 0.940 1.407 1.883

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.263 0.417 0.543
0.03-0.10 Gyr -0.440 0.197 0.538
0.10-0.33 Gyr -0.373 0.282 0.655
0.33-1.10 Gyr -0.151 0.374 0.674
1.10-3.62 Gyr -0.163 0.255 0.512
3.62-11.99 Gyr -0.628 0.069 0.443
11.99-13.32 Gyr -0.972 0.009 0.621