2026ytj results

Information

Transient
Name:AT2026ytj
Right ascension: 1h57m21.93s
Declination:27d56m11.72s
Discovery Date:July 19, 2026, 11:12 a.m.
Classification:None
Redshift:None
MW E(B-V):0.066
Host
Name:J015721.92+275611.70
Object ID:9906631595855603
Catalog Name:decals
Catalog Release:dr9
Right ascension: 1h57m21.92s
Declination:27d56m11.70s
Redshift:None
Photometric Redshift:0.098
 
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 19.25
Transient MWEBV processed 0.18
Host match processed 5.91
Host information processed 0.21
Host MWEBV processed 0.11
Host spectrum download not processed None
Global aperture construction processed 0.66
Global aperture photometry processed 8.43
Validate global photometry processed 18.73
Global host SED inference processed 445.87
Local aperture photometry processed 7.42
Validate local photometry processed 0.03
Local host SED inference processed 498.69
 

Imaging data

 

Spectral Energy Distribution

 

Host Galaxy Spectrum

 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.323 9.498 9.619
{\rm log}_{10}({\rm SFR}) -0.981 -0.256 0.354
{\rm log}_{10}({\rm sSFR}) -10.518 -9.738 -9.020
{\rm stellar\ age} 2.410 5.779 7.515

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.027 -0.452 0.003
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.827 -0.260 0.160

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.283 0.686 1.146
\delta -0.693 -0.208 0.208
\tau_1/\tau_2 0.627 1.034 1.431
Q_{PAH} 0.621 2.619 5.456
U_{min} 3.062 8.665 16.410
{\rm log}_{10}(\gamma_e)\, -2.954 -1.537 -0.497

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.716 -1.124 -0.115
{\rm log}_{10}(\tau_{AGN})\, 1.111 1.522 1.979

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.177 -0.522 0.055
0.03-0.10 Gyr -1.203 -0.256 0.446
0.10-0.33 Gyr -1.455 -0.530 0.094
0.33-1.06 Gyr -1.515 -0.483 0.056
1.06-3.45 Gyr -1.824 -0.534 -0.188
3.45-11.23 Gyr -1.504 -0.508 -0.236
11.23-12.48 Gyr -1.886 -0.543 0.038

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.965 10.018 10.120
{\rm log}_{10}({\rm SFR}) -1.183 -0.864 -0.555
{\rm log}_{10}({\rm sSFR}) -11.226 -10.889 -10.593
{\rm stellar\ age} 7.249 7.986 11.109

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.130 -0.799 -0.561
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.640 -0.435 0.266

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.186 0.327 0.500
\delta -0.203 0.080 0.257
\tau_1/\tau_2 0.602 0.941 1.299
Q_{PAH} 0.770 1.949 3.757
U_{min} 2.788 8.650 16.773
{\rm log}_{10}(\gamma_e)\, -2.874 -1.746 -0.778

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.625 -2.088 -1.404
{\rm log}_{10}(\tau_{AGN})\, 1.089 1.504 1.899

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.915 -0.704 -0.527
0.03-0.10 Gyr -1.850 -0.973 -0.540
0.10-0.33 Gyr -2.259 -1.042 -0.593
0.33-1.06 Gyr -2.527 -1.084 -0.591
1.06-3.45 Gyr -2.288 -0.699 -0.135
3.45-11.23 Gyr -0.516 0.182 0.304
11.23-12.48 Gyr -0.112 0.480 1.219
 

Aperture Photometry


Aperture details

RA, DEC (J2000):1h57m21.93s, 27d56m11.72s
semi major axis, semi minor axis (arcsec):1.11, 1.11
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_r 88.14 0.85 19.037 0.010 AB
PanSTARRS_z 133.05 0.95 18.590 0.008 AB
DES_z 154.91 2.45 18.425 0.017 AB
PanSTARRS_y 165.48 1.89 18.353 0.012 AB

Aperture details

RA, DEC (J2000):1h57m21.91s, 27d56m11.86s
semi major axis, semi minor axis (arcsec):5.05, 3.11
angle (degrees, anti-clockwise from east):329.8
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 7.09 1.83 21.773 0.281 AB
GALEX_NUV 6.09 1.47 21.938 0.262 AB
SDSS_u 13.13 4.06 21.105 0.336 AB
SDSS_g 92.19 2.71 18.988 0.032 AB
DES_g 103.08 0.51 18.867 0.005 AB
PanSTARRS_g 105.69 1.15 18.840 0.012 AB
SDSS_r 197.33 4.18 18.162 0.023 AB
PanSTARRS_r 189.22 1.2 18.208 0.007 AB
DES_r 213.34 1.4 18.077 0.007 AB
SDSS_i 292.07 5.48 17.736 0.020 AB
PanSTARRS_i 289.29 1.27 17.747 0.005 AB
PanSTARRS_z 344.19 3.2 17.558 0.010 AB
SDSS_z 378.57 17.53 17.455 0.050 AB
DES_z 373.84 3.91 17.468 0.011 AB
PanSTARRS_y 382.51 6.54 17.443 0.019 AB
2MASS_J 542.22 104.35 16.170 0.209 Vega
2MASS_H 832.0 169.28 15.232 0.221 Vega
2MASS_K 833.52 199.98 14.760 0.260 Vega
WISE_W1 273.33 12.17 15.109 0.048 Vega
WISE_W2 177.85 14.25 14.936 0.087 Vega
WISE_W3 483.23 54.86 12.016 0.123 Vega
WISE_W4 230.31 295.79 11.374 1.394 Vega