2025ysj

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Information

Transient

Name: AT2025ysj
Right ascension: 1h16m52.83s
Declination: -28d46m47.87s
Discovery Date: Sept. 25, 2025, 1:54 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.014

Host

Name:
Right ascension: 1h16m53.01s
Declination: -28d46m48.59s
Redshift: None
Photometric Redshift: 0.047
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 5.48
Transient MWEBV processed 0.04
Host match processed 6.41
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.62
Global aperture photometry processed 5.58
Validate global photometry processed 13.81
Global host SED inference processed 388.16
Local aperture photometry processed 5.63
Validate local photometry processed 0.02
Local host SED inference processed 479.55
 

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) = 1h16m52.83s, -28d46m47.87s
semi major axis, semi minor axis (arcsec) = 2.18, 2.18
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 78.16 0.32 19.167 0.004 AB
PanSTARRS_g 84.59 0.76 19.082 0.010 AB
PanSTARRS_r 101.3 1.1 18.886 0.012 AB
DES_r 102.71 0.47 18.871 0.005 AB
PanSTARRS_i 131.64 0.82 18.602 0.007 AB
PanSTARRS_z 115.23 1.71 18.746 0.016 AB
DES_z 116.24 1.37 18.737 0.013 AB
PanSTARRS_y 137.61 5.03 18.553 0.040 AB

Aperture details

RA, DEC (J2000) = 1h16m52.98s, -28d46m48.38s
semi major axis, semi minor axis (arcsec) = 9.08, 6.33
angle (degrees, anti-clockwise from east) = -95.09

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 59.46 7.56 19.464 0.138 AB
GALEX_NUV 88.37 5.46 19.034 0.067 AB
DES_g 327.11 0.72 17.613 0.002 AB
PanSTARRS_g 312.27 2.53 17.664 0.009 AB
PanSTARRS_r 391.6 3.75 17.418 0.010 AB
DES_r 441.98 1.05 17.286 0.003 AB
PanSTARRS_i 511.94 2.77 17.127 0.006 AB
PanSTARRS_z 478.19 5.9 17.201 0.013 AB
DES_z 526.34 3.21 17.097 0.007 AB
PanSTARRS_y 577.33 17.4 16.996 0.033 AB
2MASS_J 865.99 176.9 15.661 0.222 Vega
2MASS_H 881.25 275.8 15.170 0.340 Vega
2MASS_K 712.38 348.68 14.930 0.531 Vega
WISE_W1 255.81 13.96 15.181 0.059 Vega
WISE_W2 176.02 17.5 14.947 0.108 Vega
WISE_W3 541.02 85.16 11.893 0.171 Vega
WISE_W4 836.74 446.84 9.974 0.580 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})\, 8.700 8.903 9.032
{\rm log}_{10}({\rm SFR}) -1.222 -0.658 -0.185
{\rm log}_{10}({\rm sSFR}) -10.167 -9.564 -8.961
{\rm stellar\ age} 2.902 6.102 7.993

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.892 -1.666 -1.179
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.623 -0.636 0.110

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.152 0.497 0.797
\delta -0.350 0.041 0.291
\tau_1/\tau_2 0.808 1.167 1.511
Q_{PAH} 0.520 1.866 4.223
U_{min} 2.568 7.173 13.933
{\rm log}_{10}(\gamma_e)\, -3.419 -2.457 -1.093

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.581 -1.587 -0.546
{\rm log}_{10}(\tau_{AGN})\, 1.062 1.437 1.940

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.211 -0.832 -0.518
0.03-0.10 Gyr -1.341 -0.619 -0.080
0.10-0.33 Gyr -1.731 -0.838 -0.316
0.33-1.09 Gyr -1.972 -1.128 -0.686
1.09-3.58 Gyr -1.895 -1.142 -0.816
3.58-11.82 Gyr -1.966 -1.122 -0.831
11.82-13.13 Gyr -2.140 -1.141 -0.516

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.295 9.388 9.500
{\rm log}_{10}({\rm SFR}) -0.451 -0.252 -0.040
{\rm log}_{10}({\rm sSFR}) -9.898 -9.660 -9.400
{\rm stellar\ age} 5.231 6.361 7.440

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.100 -0.762 -0.531
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, 0.006 0.128 0.265

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.087 0.166 0.310
\delta -0.573 -0.074 0.258
\tau_1/\tau_2 0.790 1.071 1.390
Q_{PAH} 0.310 0.901 2.086
U_{min} 2.685 6.994 13.091
{\rm log}_{10}(\gamma_e)\, -3.131 -2.197 -1.406

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.158 -2.941 -2.003
{\rm log}_{10}(\tau_{AGN})\, 0.986 1.371 1.799

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.562 -0.421 -0.289
0.03-0.10 Gyr -0.459 -0.186 0.061
0.10-0.33 Gyr -0.486 -0.184 0.057
0.33-1.09 Gyr -0.747 -0.451 -0.229
1.09-3.58 Gyr -0.813 -0.555 -0.356
3.58-11.82 Gyr -0.785 -0.554 -0.373
11.82-13.13 Gyr -0.935 -0.501 -0.116