2025ydd

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Information

Transient

Name: SN2025ydd
Right ascension: 17h14m54.83s
Declination: 35d30m57.34s
Discovery Date: Sept. 20, 2025, 3:21 a.m.
Classification: SN Ia
Redshift: 0.037376
MW E(B-V): 0.026

Host

Name:
Right ascension: 17h14m55.01s
Declination: 35d31m13.67s
Redshift: 0.037358
Photometric Redshift:
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 5.35
Transient MWEBV processed 0.11
Host match processed 5.82
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.66
Global aperture photometry processed 6.64
Validate global photometry processed 17.91
Global host SED inference processed 411.78
Local aperture photometry processed 6.41
Validate local photometry processed 0.02
Local host SED inference processed 522.43
 

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) = 17h14m54.83s, 35d30m57.34s
semi major axis, semi minor axis (arcsec) = 2.7, 2.7
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 5.63 2.08 22.024 0.401 AB
SDSS_g 21.3 1.42 20.579 0.072 AB
DES_g 21.04 0.3 20.592 0.016 AB
PanSTARRS_g 19.27 0.52 20.688 0.029 AB
SDSS_r 28.61 1.79 20.259 0.068 AB
PanSTARRS_r 30.57 0.8 20.187 0.029 AB
SDSS_i 37.75 2.51 19.958 0.072 AB
PanSTARRS_i 30.48 0.5 20.190 0.018 AB
PanSTARRS_z 41.43 2.01 19.857 0.053 AB
SDSS_z 43.86 7.06 19.795 0.175 AB
DES_z 26.66 0.97 20.335 0.039 AB
PanSTARRS_y 39.06 4.24 19.921 0.118 AB

Aperture details

RA, DEC (J2000) = 17h14m55.08s, 35d31m13.20s
semi major axis, semi minor axis (arcsec) = 28.62, 20.3
angle (degrees, anti-clockwise from east) = -49.58

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 450.59 17.41 17.266 0.042 AB
GALEX_NUV 722.44 12.9 16.753 0.019 AB
SDSS_g 4943.71 19.58 14.665 0.004 AB
PanSTARRS_g 5110.29 4.74 14.629 0.001 AB
SDSS_r 7437.12 24.72 14.221 0.004 AB
PanSTARRS_r 8163.41 7.33 14.120 0.001 AB
SDSS_i 9756.96 31.1 13.927 0.003 AB
PanSTARRS_i 9588.38 4.54 13.946 0.001 AB
SDSS_z 11289.14 67.0 13.768 0.006 AB
DES_z 10536.82 15.33 13.843 0.002 AB
2MASS_J 15454.33 527.66 12.532 0.037 Vega
2MASS_H 17048.27 916.18 11.953 0.058 Vega
2MASS_K 14795.55 929.3 11.637 0.068 Vega
WISE_W1 9210.67 60.84 11.290 0.007 Vega
WISE_W2 6345.72 61.55 11.055 0.011 Vega
WISE_W3 44656.21 263.18 7.101 0.006 Vega
WISE_W4 71126.14 4404.81 5.150 0.067 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})\, 7.889 8.086 8.222
{\rm log}_{10}({\rm SFR}) -2.240 -1.686 -1.058
{\rm log}_{10}({\rm sSFR}) -10.357 -9.761 -9.070
{\rm stellar\ age} 2.854 5.980 7.557

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.717 -1.290 -0.736
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.905 -1.650 -0.489

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.087 0.281 0.760
\delta -0.682 -0.199 0.169
\tau_1/\tau_2 0.765 1.135 1.505
Q_{PAH} 1.297 3.251 5.560
U_{min} 2.937 8.221 15.439
{\rm log}_{10}(\gamma_e)\, -2.782 -1.627 -0.588

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.447 -0.404 -0.022
{\rm log}_{10}(\tau_{AGN})\, 1.260 1.600 1.994

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.432 -1.838 -1.403
0.03-0.10 Gyr -2.341 -1.656 -0.960
0.10-0.33 Gyr -2.338 -1.649 -1.096
0.33-1.09 Gyr -2.559 -1.833 -1.424
1.09-3.61 Gyr -2.555 -1.880 -1.626
3.61-11.93 Gyr -2.786 -1.930 -1.660
11.93-13.26 Gyr -2.944 -1.976 -1.438

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.366 10.540 10.719
{\rm log}_{10}({\rm SFR}) 0.547 0.970 1.309
{\rm log}_{10}({\rm sSFR}) -10.100 -9.572 -9.112
{\rm stellar\ age} 2.126 4.839 6.675

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.260 -0.719 -0.413
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.867 -1.317 0.267

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.484 0.676 0.869
\delta -0.143 0.014 0.232
\tau_1/\tau_2 0.602 0.947 1.303
Q_{PAH} 0.770 1.519 2.635
U_{min} 2.679 7.439 14.203
{\rm log}_{10}(\gamma_e)\, -3.510 -2.555 -1.865

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.669 -1.963 -1.519
{\rm log}_{10}(\tau_{AGN})\, 1.048 1.496 1.881

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.344 0.851 1.162
0.03-0.10 Gyr 0.311 0.977 1.402
0.10-0.33 Gyr 0.587 1.098 1.509
0.33-1.09 Gyr 0.439 0.935 1.263
1.09-3.61 Gyr 0.026 0.685 1.010
3.61-11.93 Gyr -0.743 0.368 0.721
11.93-13.26 Gyr -0.956 0.329 0.929