2025zsi

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Information

Transient

Name: AT2025zsi
Right ascension: 20h33m07.57s
Declination: 4d07m50.21s
Discovery Date: Oct. 10, 2025, 9:16 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.083

Host

Name: 20330758+0407480
Right ascension: 20h33m07.58s
Declination: 4d07m48.01s
Redshift: None
Photometric Redshift: 0.079
 

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 5.45
Cutout download processed 16.35
Global aperture construction processed 0.66
Local aperture photometry processed 5.14
Global aperture photometry processed 5.34
Validate local photometry processed 0.02
Validate global photometry processed 15.75
Host information processed 0.13
Global host SED inference processed 428.24
Local host SED inference processed 429.43
Transient information processed 0.0
Transient MWEBV processed 0.04
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) = 20h33m07.57s, 4d07m50.21s
semi major axis, semi minor axis (arcsec) = 1.34, 1.34
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 56.5 0.35 19.520 0.007 AB
SDSS_r 96.66 2.62 18.937 0.029 AB
PanSTARRS_r 104.2 0.42 18.855 0.004 AB
SDSS_i 144.75 3.28 18.498 0.025 AB
PanSTARRS_i 154.72 0.39 18.426 0.003 AB
PanSTARRS_z 187.19 0.95 18.219 0.005 AB
SDSS_z 183.7 5.83 18.240 0.034 AB
PanSTARRS_y 220.79 2.59 18.040 0.013 AB

Aperture details

RA, DEC (J2000) = 20h33m07.47s, 4d07m49.11s
semi major axis, semi minor axis (arcsec) = 14.32, 9.01
angle (degrees, anti-clockwise from east) = -40.51

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 24.85 4.27 20.412 0.187 AB
GALEX_NUV 39.46 2.86 19.910 0.079 AB
SDSS_u 277.03 11.21 17.794 0.044 AB
SDSS_g 974.63 8.75 16.428 0.010 AB
PanSTARRS_g 1087.7 2.75 16.309 0.003 AB
SDSS_r 1913.64 12.46 15.695 0.007 AB
PanSTARRS_r 2026.33 3.32 15.633 0.002 AB
SDSS_i 2906.03 16.5 15.242 0.006 AB
PanSTARRS_i 2921.02 3.05 15.236 0.001 AB
PanSTARRS_z 3549.72 7.76 15.025 0.002 AB
SDSS_z 3945.21 42.86 14.910 0.012 AB
PanSTARRS_y 4234.72 21.73 14.833 0.006 AB
2MASS_J 5345.41 291.32 13.685 0.059 Vega
2MASS_H 7985.55 495.29 12.777 0.067 Vega
2MASS_K 8101.88 436.59 12.291 0.059 Vega
WISE_W1 3863.41 51.61 12.234 0.015 Vega
WISE_W2 2871.86 56.73 11.916 0.021 Vega
WISE_W3 17639.87 202.06 8.110 0.012 Vega
WISE_W4 46085.9 1896.21 5.621 0.045 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.632 9.752 9.883
{\rm log}_{10}({\rm SFR}) -1.229 -0.577 -0.036
{\rm log}_{10}({\rm sSFR}) -11.045 -10.386 -9.793
{\rm stellar\ age} 4.850 6.905 8.211

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.425 -0.747 -0.351
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.686 -0.743 0.141

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.233 0.655 1.094
\delta -0.748 -0.247 0.153
\tau_1/\tau_2 0.672 1.035 1.386
Q_{PAH} 0.741 2.537 5.053
U_{min} 2.744 7.953 15.269
{\rm log}_{10}(\gamma_e)\, -3.125 -2.010 -0.749

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.640 -1.394 -0.331
{\rm log}_{10}(\tau_{AGN})\, 0.949 1.310 1.829

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.187 -0.741 -0.350
0.03-0.10 Gyr -1.459 -0.588 0.073
0.10-0.33 Gyr -1.355 -0.479 0.104
0.33-1.07 Gyr -1.137 -0.403 0.068
1.07-3.50 Gyr -0.884 -0.285 0.014
3.50-11.44 Gyr -0.612 -0.168 0.029
11.44-12.72 Gyr -0.769 -0.086 0.449

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.902 10.976 11.044
{\rm log}_{10}({\rm SFR}) 0.003 0.352 0.739
{\rm log}_{10}({\rm sSFR}) -11.034 -10.617 -10.210
{\rm stellar\ age} 4.957 6.205 7.159

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.449 -0.212 -0.049
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.436 0.057 0.362

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.191 0.318 0.494
\delta -0.612 -0.311 0.149
\tau_1/\tau_2 0.542 0.896 1.250
Q_{PAH} 0.741 2.118 4.020
U_{min} 2.247 7.060 14.665
{\rm log}_{10}(\gamma_e)\, -2.819 -1.144 -0.321

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.047 -0.742 -0.573
{\rm log}_{10}(\tau_{AGN})\, 1.792 2.019 2.117

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.025 0.367 0.627
0.03-0.10 Gyr -0.119 0.330 0.803
0.10-0.33 Gyr 0.047 0.594 1.029
0.33-1.07 Gyr 0.399 0.889 1.137
1.07-3.50 Gyr 1.005 1.231 1.411
3.50-11.44 Gyr 0.796 1.056 1.205
11.44-12.72 Gyr 0.449 0.989 1.396