2025ysn

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Information

Transient

Name: AT2025ysn
Right ascension: 0h24m36.14s
Declination: -11d29m36.36s
Discovery Date: Sept. 24, 2025, 11:41 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.032

Host

Name: 1538
Right ascension: 0h24m36.50s
Declination: -11d29m48.32s
Redshift: 0.053810
Photometric Redshift:
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 5.51
Transient MWEBV processed 0.05
Host match processed 3.73
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.63
Global aperture photometry processed 5.48
Validate global photometry processed 14.18
Global host SED inference processed 409.78
Local aperture photometry processed 5.44
Validate local photometry processed 0.02
Local host SED inference processed 414.08
 

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) = 0h24m36.14s, -11d29m36.36s
semi major axis, semi minor axis (arcsec) = 1.91, 1.91
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 14.57 0.21 20.991 0.015 AB
PanSTARRS_g 15.0 0.48 20.959 0.034 AB
PanSTARRS_r 29.43 0.43 20.228 0.016 AB
DES_r 33.72 0.52 20.080 0.017 AB
PanSTARRS_i 44.12 0.65 19.788 0.016 AB
PanSTARRS_z 55.11 1.32 19.547 0.026 AB
DES_z 63.38 1.66 19.395 0.028 AB
PanSTARRS_y 78.11 3.58 19.168 0.050 AB

Aperture details

RA, DEC (J2000) = 0h24m36.49s, -11d29m47.57s
semi major axis, semi minor axis (arcsec) = 18.69, 13.39
angle (degrees, anti-clockwise from east) = -18.84

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 12.41 2.14 21.165 0.187 AB
GALEX_NUV 18.01 2.78 20.761 0.168 AB
DES_g 1327.41 1.89 16.092 0.002 AB
PanSTARRS_g 1361.33 3.95 16.065 0.003 AB
PanSTARRS_r 2840.6 3.61 15.266 0.001 AB
DES_r 3091.83 4.89 15.174 0.002 AB
PanSTARRS_i 4337.32 5.5 14.807 0.001 AB
PanSTARRS_z 5670.22 10.88 14.516 0.002 AB
DES_z 6070.6 16.08 14.442 0.003 AB
PanSTARRS_y 7511.31 30.41 14.211 0.004 AB
2MASS_J 8964.44 401.6 13.124 0.049 Vega
2MASS_H 13042.82 693.67 12.244 0.058 Vega
2MASS_K 11593.45 751.44 11.902 0.070 Vega
WISE_W1 6158.15 52.06 11.727 0.009 Vega
WISE_W2 4441.81 60.96 11.442 0.015 Vega
WISE_W3 16610.56 218.74 8.175 0.014 Vega
WISE_W4 23256.58 1536.1 6.364 0.072 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})\, 8.824 8.977 9.094
{\rm log}_{10}({\rm SFR}) -1.728 -1.132 -0.666
{\rm log}_{10}({\rm sSFR}) -10.780 -10.152 -9.563
{\rm stellar\ age} 4.802 6.842 8.471

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.177 -0.441 -0.009
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.743 0.206 0.396

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.537 1.094 1.538
\delta -0.394 -0.115 0.147
\tau_1/\tau_2 0.620 0.959 1.288
Q_{PAH} 0.792 2.412 4.847
U_{min} 2.823 7.505 14.193
{\rm log}_{10}(\gamma_e)\, -3.054 -2.109 -0.995

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.629 -1.305 -0.368
{\rm log}_{10}(\tau_{AGN})\, 0.953 1.303 1.833

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.669 -1.070 -0.704
0.03-0.10 Gyr -1.991 -1.227 -0.652
0.10-0.33 Gyr -2.046 -1.238 -0.679
0.33-1.08 Gyr -2.064 -1.210 -0.739
1.08-3.57 Gyr -1.827 -1.045 -0.780
3.57-11.73 Gyr -1.535 -0.964 -0.759
11.73-13.04 Gyr -1.638 -0.941 -0.328

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.973 11.042 11.094
{\rm log}_{10}({\rm SFR}) -1.213 -0.804 -0.382
{\rm log}_{10}({\rm sSFR}) -12.257 -11.843 -11.364
{\rm stellar\ age} 7.203 8.046 10.061

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.109 0.026 0.117
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.924 0.057 0.360

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.225 0.326 0.439
\delta -0.572 -0.233 0.103
\tau_1/\tau_2 0.429 0.792 1.184
Q_{PAH} 1.532 3.402 5.142
U_{min} 2.358 7.296 14.881
{\rm log}_{10}(\gamma_e)\, -3.150 -1.997 -0.896

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.162 -0.919 -0.781
{\rm log}_{10}(\tau_{AGN})\, 1.628 1.855 2.014

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.851 -0.481 -0.025
0.03-0.10 Gyr -3.109 -1.314 -0.662
0.10-0.33 Gyr -2.729 -1.209 -0.494
0.33-1.08 Gyr -2.007 -0.787 -0.053
1.08-3.57 Gyr -0.651 0.490 1.076
3.57-11.73 Gyr 0.835 1.193 1.317
11.73-13.04 Gyr 0.674 1.330 1.971