2025ygn results

Information

Transient
Name:AT2025ygn
Right ascension: 21h19m13.51s
Declination:-50d22m47.73s
Discovery Date:Sept. 22, 2025, 3:26 a.m.
Classification:None
Redshift:None
MW E(B-V):0.022
Host
Name:
Right ascension: 21h19m13.49s
Declination:-50d22m48.88s
Redshift:None
Photometric Redshift:0.051
 

Cutout Download Report

Downloaded Unavailable
2MASS_H
2MASS_J
2MASS_K
WISE_W1
WISE_W2
WISE_W3
WISE_W4
GALEX_NUV
GALEX_FUV
DES_g
DES_r
DES_z
 PanSTARRS_g
PanSTARRS_r
PanSTARRS_i
PanSTARRS_z
PanSTARRS_y
SDSS_i
SDSS_r
SDSS_u
SDSS_z
SDSS_g
DES_i
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 5.33
Transient MWEBV processed 0.04
Host match processed 5.48
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.39
Global aperture photometry processed 1.06
Validate global photometry processed 3.07
Global host SED inference processed 505.28
Local aperture photometry processed 1.83
Validate local photometry processed 0.02
Local host SED inference processed 560.79
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):21h19m13.51s, -50d22m47.73s
semi major axis, semi minor axis (arcsec):2.0, 2.0
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 41.15 0.2 19.864 0.005 AB
DES_r 47.86 0.34 19.700 0.008 AB
DES_z 48.29 0.88 19.690 0.020 AB

Aperture details

RA, DEC (J2000):21h19m13.66s, -50d22m48.37s
semi major axis, semi minor axis (arcsec):10.79, 3.18
angle (degrees, anti-clockwise from east):110.52
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 21.29 3.22 20.580 0.164 AB
GALEX_NUV 35.92 2.52 20.012 0.076 AB
2MASS_J 49.23 149.45 18.774 3.296 Vega
2MASS_H 42.29 231.41 18.467 5.940 Vega
2MASS_K -161.97 243.91 Vega
WISE_W2 65.83 14.94 16.015 0.246 Vega
WISE_W3 57.15 79.05 14.333 1.502 Vega
WISE_W4 191.38 414.51 11.575 2.352 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 7.990 8.273 8.509
{\rm log}_{10}({\rm SFR}) -1.315 -0.710 -0.220
{\rm log}_{10}({\rm sSFR}) -9.652 -9.017 -8.174
{\rm stellar\ age} 0.573 4.183 6.690

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.774 -1.300 -0.353
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.406 -0.903 -0.069

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.137 0.405 0.782
\delta -0.610 -0.138 0.192
\tau_1/\tau_2 0.661 1.078 1.462
Q_{PAH} 0.778 2.456 4.966
U_{min} 3.243 8.839 16.236
{\rm log}_{10}(\gamma_e)\, -2.991 -1.708 -0.622

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.363 -1.208 -0.260
{\rm log}_{10}(\tau_{AGN})\, 1.034 1.570 2.014

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.257 -0.811 -0.521
0.03-0.10 Gyr -1.543 -0.695 -0.114
0.10-0.33 Gyr -2.441 -1.209 -0.643
0.33-1.08 Gyr -3.181 -1.542 -1.014
1.08-3.57 Gyr -3.951 -1.796 -1.340
3.57-11.77 Gyr -4.524 -1.961 -1.433
11.77-13.07 Gyr -4.417 -2.034 -1.279

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.214 8.747 9.182
{\rm log}_{10}({\rm SFR}) -0.586 -0.317 0.099
{\rm log}_{10}({\rm sSFR}) -9.534 -9.000 -8.254
{\rm stellar\ age} 1.013 5.774 8.468

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.605 -0.909 -0.081
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.262 -0.401 0.082

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.164 0.308 0.587
\delta -0.715 -0.250 0.203
\tau_1/\tau_2 0.411 0.926 1.435
Q_{PAH} 0.584 1.448 3.913
U_{min} 2.993 8.041 15.591
{\rm log}_{10}(\gamma_e)\, -3.489 -2.601 -1.480

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.326 -3.362 -2.249
{\rm log}_{10}(\tau_{AGN})\, 0.982 1.477 1.887

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.855 -0.274 0.012
0.03-0.10 Gyr -1.317 -0.347 0.207
0.10-0.33 Gyr -2.943 -1.196 -0.402
0.33-1.08 Gyr -3.969 -1.708 -0.907
1.08-3.57 Gyr -3.723 -1.686 -1.032
3.57-11.77 Gyr -3.322 -1.465 -0.805
11.77-13.07 Gyr -3.267 -1.337 -0.341