2025ygd

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Information

Transient

Name: AT2025ygd
Right ascension: 23h05m10.52s
Declination: 13d30m30.92s
Discovery Date: Sept. 21, 2025, 7:07 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.196

Host

Name: 1432786
Right ascension: 23h05m10.56s
Declination: 13d30m29.09s
Redshift: None
Photometric Redshift: 0.048
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 17.02
Transient MWEBV processed 0.08
Host match processed 4.25
Host information processed 0.12
Host MWEBV processed 0.05
Global aperture construction processed 0.65
Global aperture photometry processed 7.29
Validate global photometry processed 18.48
Global host SED inference processed 402.41
Local aperture photometry processed 6.89
Validate local photometry processed 0.03
Local host SED inference processed 433.16
 

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) = 23h05m10.52s, 13d30m30.92s
semi major axis, semi minor axis (arcsec) = 2.13, 2.13
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 13.73 1.98 21.056 0.156 AB
SDSS_g 59.25 2.07 19.468 0.038 AB
DES_g 64.36 0.39 19.378 0.007 AB
PanSTARRS_g 65.86 0.48 19.353 0.008 AB
SDSS_r 126.23 3.03 18.647 0.026 AB
PanSTARRS_r 131.39 0.47 18.604 0.004 AB
DES_r 143.9 0.95 18.505 0.007 AB
SDSS_i 191.71 3.88 18.193 0.022 AB
PanSTARRS_i 199.95 0.81 18.148 0.004 AB
PanSTARRS_z 248.56 1.38 17.911 0.006 AB
SDSS_z 260.83 6.41 17.859 0.027 AB
DES_z 266.0 2.73 17.838 0.011 AB
PanSTARRS_y 315.35 3.11 17.653 0.011 AB

Aperture details

RA, DEC (J2000) = 23h05m10.48s, 13d30m30.40s
semi major axis, semi minor axis (arcsec) = 10.81, 6.33
angle (degrees, anti-clockwise from east) = -180.01

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 3.8 0.79 22.449 0.225 AB
GALEX_NUV 9.81 0.76 21.421 0.084 AB
SDSS_u 54.08 7.27 19.567 0.146 AB
SDSS_g 240.78 4.62 17.946 0.021 AB
DES_g 255.02 0.86 17.884 0.004 AB
PanSTARRS_g 261.72 1.79 17.855 0.007 AB
SDSS_r 488.75 6.64 17.177 0.015 AB
PanSTARRS_r 494.88 1.71 17.164 0.004 AB
SDSS_i 735.15 9.13 16.734 0.013 AB
PanSTARRS_i 753.98 3.04 16.707 0.004 AB
PanSTARRS_z 930.62 5.19 16.478 0.006 AB
SDSS_z 1000.86 20.73 16.399 0.022 AB
PanSTARRS_y 1188.72 11.96 16.212 0.011 AB
2MASS_J 1353.97 193.19 15.176 0.155 Vega
2MASS_H 1447.23 256.91 14.631 0.193 Vega
2MASS_K 808.03 371.41 14.794 0.499 Vega
WISE_W1 690.74 20.82 14.103 0.033 Vega
WISE_W2 434.43 25.82 13.966 0.065 Vega
WISE_W3 1393.67 114.35 10.866 0.089 Vega
WISE_W4 1494.13 612.05 9.344 0.445 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})\, 9.349 9.488 9.611
{\rm log}_{10}({\rm SFR}) -1.196 -0.683 -0.184
{\rm log}_{10}({\rm sSFR}) -10.787 -10.176 -9.622
{\rm stellar\ age} 5.117 7.143 8.957

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.514 -0.975 -0.551
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.052 0.049 0.317

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.314 0.651 1.058
\delta -0.574 -0.227 0.077
\tau_1/\tau_2 0.715 1.043 1.394
Q_{PAH} 0.948 2.442 4.606
U_{min} 2.539 7.511 14.391
{\rm log}_{10}(\gamma_e)\, -3.364 -2.194 -0.989

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.109 -2.271 -0.693
{\rm log}_{10}(\tau_{AGN})\, 1.031 1.495 1.936

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.140 -0.759 -0.424
0.03-0.10 Gyr -1.365 -0.670 -0.098
0.10-0.33 Gyr -1.572 -0.698 -0.098
0.33-1.09 Gyr -1.626 -0.715 -0.261
1.09-3.58 Gyr -1.474 -0.587 -0.285
3.58-11.80 Gyr -0.917 -0.454 -0.234
11.80-13.12 Gyr -0.966 -0.358 0.278

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.965 10.035 10.105
{\rm log}_{10}({\rm SFR}) -0.365 -0.021 0.326
{\rm log}_{10}({\rm sSFR}) -10.433 -10.043 -9.693
{\rm stellar\ age} 6.938 7.826 9.925

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.940 -0.671 -0.501
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.443 -0.066 0.133

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.210 0.331 0.544
\delta -0.849 -0.564 -0.304
\tau_1/\tau_2 0.636 0.994 1.379
Q_{PAH} 0.219 0.678 1.558
U_{min} 2.649 7.574 14.356
{\rm log}_{10}(\gamma_e)\, -3.094 -2.084 -1.331

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.495 -3.592 -2.632
{\rm log}_{10}(\tau_{AGN})\, 1.139 1.637 1.979

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.003 -0.513 -0.265
0.03-0.10 Gyr -0.336 0.092 0.474
0.10-0.33 Gyr -0.603 -0.104 0.264
0.33-1.09 Gyr -1.160 -0.442 -0.111
1.09-3.58 Gyr -1.042 -0.356 -0.003
3.58-11.80 Gyr -0.131 0.162 0.285
11.80-13.12 Gyr -0.243 0.346 0.970