2025sad

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Information

Transient

Name: AT2025sad
Right ascension: 20h59m05.73s
Declination: 11d08m40.98s
Discovery Date: July 24, 2025, 1:13 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.066

Host

Name: 65831
Right ascension: 20h59m06.24s
Declination: 11d08m44.02s
Redshift: None
Photometric Redshift: 0.032
 

Processing Status

Cutout download
 Cutout download
processed
 status
Transient information
Transient information
processed
 status
Transient MWEBV
Transient MWEBV
processed
 status
Host match
 Host match
processed
 status
Host information
Host information
processed
 status
Local aperture photometry
 Local aperture photometry
processed
 status
Validate local photometry
 Validate local photometry
processed
 status
Local host SED inference
Local host SED inference
processed
 status
Host MWEBV
Host MWEBV
processed
 status
Global host SED inference
Global host SED inference
processed
 status
Validate global photometry
Validate global photometr...
processed
 status
Global aperture construction
 Global aperture construct...
processed
 status
Global aperture photometry
 Global aperture photometr...
processed
 status
Task Name Status Time taken (s) Warning Flag
Host match processed 3.8
Cutout download processed 25.36
Global aperture construction processed 3.76
Local aperture photometry processed 5.61
Global aperture photometry processed 4.99
Validate local photometry processed 0.02
Validate global photometry processed 14.12
Host information processed 0.14
Global host SED inference processed 2300.88
Local host SED inference processed 591.64
Transient information processed 0.0
Transient MWEBV processed 0.05
Host MWEBV processed 0.04
Processing status completed N/A N/A
 

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) = 20h59m05.73s, 11d08m40.98s
semi major axis, semi minor axis (arcsec) = 3.15, 3.15
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 67.57 0.41 19.326 0.007 AB
PanSTARRS_g 63.03 0.82 19.401 0.014 AB
PanSTARRS_r 109.04 0.91 18.806 0.009 AB
DES_r 114.12 0.96 18.757 0.009 AB
PanSTARRS_i 133.11 1.16 18.590 0.010 AB
PanSTARRS_z 154.52 2.38 18.428 0.017 AB
DES_z 165.66 2.85 18.352 0.019 AB
PanSTARRS_y 165.99 6.47 18.350 0.042 AB
2MASS_J 164.75 77.04 17.463 0.508 Vega
2MASS_H 104.71 135.08 17.482 1.401 Vega
2MASS_K 66.76 119.41 17.501 1.942 Vega

Aperture details

RA, DEC (J2000) = 20h59m06.36s, 11d08m39.81s
semi major axis, semi minor axis (arcsec) = 4.42, 3.75
angle (degrees, anti-clockwise from east) = -154.09

Warning: possible contaminating objects in the global aperture
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 17.03 3.09 20.822 0.197 AB
GALEX_NUV 32.28 2.73 20.128 0.092 AB
DES_g 153.6 0.58 18.434 0.004 AB
PanSTARRS_g 150.16 1.07 18.459 0.008 AB
PanSTARRS_r 270.17 1.18 17.821 0.005 AB
DES_r 292.15 1.48 17.736 0.006 AB
PanSTARRS_i 357.6 1.49 17.517 0.005 AB
PanSTARRS_z 419.22 3.02 17.344 0.008 AB
DES_z 472.35 4.61 17.214 0.011 AB
PanSTARRS_y 521.51 8.1 17.107 0.017 AB
2MASS_J 1027.66 118.34 15.475 0.125 Vega
2MASS_H 1064.41 204.63 14.965 0.209 Vega
2MASS_K 1023.65 183.23 14.537 0.194 Vega
WISE_W1 566.27 19.29 14.318 0.037 Vega
WISE_W2 413.15 21.52 14.021 0.057 Vega
WISE_W3 528.31 87.09 11.919 0.179 Vega
WISE_W4 2500.71 597.86 8.785 0.260 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
Warning: possible contaminating objects in the global aperture
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.649 8.780 8.915
{\rm log}_{10}({\rm SFR}) -2.025 -1.329 -0.820
{\rm log}_{10}({\rm sSFR}) -10.811 -10.111 -9.573
{\rm stellar\ age} 5.320 7.116 8.563

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.703 -1.208 -0.814
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.866 -1.554 -0.203

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.199 0.513 0.796
\delta -0.693 -0.235 0.178
\tau_1/\tau_2 0.768 1.105 1.452
Q_{PAH} 0.878 2.743 5.197
U_{min} 3.008 8.080 14.806
{\rm log}_{10}(\gamma_e)\, -3.084 -1.915 -0.699

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.505 -1.516 -0.520
{\rm log}_{10}(\tau_{AGN})\, 0.945 1.443 1.932

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.873 -1.349 -1.052
0.03-0.10 Gyr -2.276 -1.361 -0.726
0.10-0.33 Gyr -2.257 -1.345 -0.847
0.33-1.10 Gyr -2.002 -1.359 -0.975
1.10-3.63 Gyr -1.798 -1.245 -0.993
3.63-12.00 Gyr -1.526 -1.155 -0.950
12.00-13.33 Gyr -1.687 -1.100 -0.550

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.379 9.477 9.587
{\rm log}_{10}({\rm SFR}) -0.536 -0.200 0.047
{\rm log}_{10}({\rm sSFR}) -9.999 -9.680 -9.428
{\rm stellar\ age} 7.615 9.100 12.178

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.128 -0.639 -0.313
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.790 0.191 0.411

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.523 0.840 1.127
\delta 0.288 0.356 0.388
\tau_1/\tau_2 0.438 0.880 1.358
Q_{PAH} 0.219 0.678 1.622
U_{min} 2.631 6.770 13.691
{\rm log}_{10}(\gamma_e)\, -3.672 -3.191 -2.430

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.088 -1.752 -1.524
{\rm log}_{10}(\tau_{AGN})\, 0.767 0.916 1.156

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.854 -0.525 -0.193
0.03-0.10 Gyr -0.497 -0.125 0.151
0.10-0.33 Gyr -2.334 -1.208 -0.660
0.33-1.10 Gyr -3.383 -1.574 -1.013
1.10-3.63 Gyr -2.849 -1.339 -0.769
3.63-12.00 Gyr -1.611 -0.530 -0.339
12.00-13.33 Gyr -0.570 0.147 0.644