2025syj

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Information

Transient

Name: AT2025syj
Right ascension: 23h22m13.97s
Declination: 8d48m58.63s
Discovery Date: July 28, 2025, 9:35 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.040

Host

Name:
Right ascension: 23h22m13.94s
Declination: 8d48m58.43s
Redshift: None
Photometric Redshift: 0.104
 

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 7.81
Cutout download processed 28.07
Global aperture construction processed 0.63
Local aperture photometry processed 8.06
Global aperture photometry processed 6.85
Validate local photometry processed 0.03
Validate global photometry processed 17.38
Host information processed 0.15
Global host SED inference processed 406.71
Local host SED inference processed 599.34
Transient information processed 0.0
Transient MWEBV processed 0.06
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) = 23h22m13.97s, 8d48m58.63s
semi major axis, semi minor axis (arcsec) = 1.05, 1.05
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_z 54.07 1.39 19.568 0.028 AB
PanSTARRS_y 50.98 1.92 19.632 0.041 AB

Aperture details

RA, DEC (J2000) = 23h22m13.92s, 8d48m58.53s
semi major axis, semi minor axis (arcsec) = 5.63, 3.58
angle (degrees, anti-clockwise from east) = -92.29

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 16.59 0.66 20.850 0.043 AB
GALEX_NUV 24.57 0.49 20.424 0.022 AB
SDSS_u 48.95 4.34 19.676 0.096 AB
SDSS_g 94.55 3.01 18.961 0.035 AB
DES_g 102.57 0.54 18.872 0.006 AB
PanSTARRS_g 98.72 0.98 18.914 0.011 AB
SDSS_r 129.99 3.61 18.615 0.030 AB
PanSTARRS_r 127.77 1.03 18.634 0.009 AB
DES_r 137.59 0.95 18.554 0.008 AB
SDSS_i 186.97 5.08 18.221 0.030 AB
PanSTARRS_i 170.77 1.51 18.319 0.010 AB
PanSTARRS_z 170.68 2.66 18.320 0.017 AB
SDSS_z 154.42 11.22 18.428 0.079 AB
DES_z 176.92 2.81 18.281 0.017 AB
PanSTARRS_y 183.3 8.06 18.242 0.048 AB
2MASS_J 586.39 135.68 16.085 0.251 Vega
2MASS_H 78.57 213.64 17.794 2.952 Vega
2MASS_K 150.99 213.2 16.615 1.533 Vega
WISE_W1 98.6 9.36 16.216 0.103 Vega
WISE_W2 70.94 13.31 15.934 0.204 Vega
WISE_W3 146.23 64.16 13.313 0.476 Vega
WISE_W4 955.47 455.78 9.829 0.518 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})\, 8.804 9.259 9.489
{\rm log}_{10}({\rm SFR}) -0.853 -0.201 0.271
{\rm log}_{10}({\rm sSFR}) -10.245 -9.462 -8.637
{\rm stellar\ age} 2.410 6.081 8.250

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.482 -0.558 0.023
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.464 -0.628 0.063

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.290 0.613 1.028
\delta -0.719 -0.297 0.119
\tau_1/\tau_2 0.507 0.950 1.438
Q_{PAH} 1.063 2.922 5.098
U_{min} 3.047 8.093 15.456
{\rm log}_{10}(\gamma_e)\, -3.145 -2.210 -0.962

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.789 -1.569 -0.146
{\rm log}_{10}(\tau_{AGN})\, 0.996 1.425 1.950

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.721 -0.094 0.320
0.03-0.10 Gyr -1.846 -0.476 0.270
0.10-0.33 Gyr -2.774 -1.003 -0.292
0.33-1.06 Gyr -2.997 -1.060 -0.365
1.06-3.43 Gyr -2.903 -0.966 -0.465
3.43-11.16 Gyr -2.266 -0.819 -0.391
11.16-12.40 Gyr -2.102 -0.745 0.116

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.290 9.487 9.674
{\rm log}_{10}({\rm SFR}) 0.012 0.312 0.576
{\rm log}_{10}({\rm sSFR}) -9.545 -9.200 -8.799
{\rm stellar\ age} 2.352 4.702 6.163

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.338 -0.680 -0.212
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.914 0.224 0.404

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.141 0.266 0.443
\delta -0.600 -0.211 0.063
\tau_1/\tau_2 0.742 1.084 1.438
Q_{PAH} 0.823 2.351 4.373
U_{min} 2.498 7.486 14.645
{\rm log}_{10}(\gamma_e)\, -3.009 -2.019 -0.711

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.198 -2.932 -1.783
{\rm log}_{10}(\tau_{AGN})\, 0.985 1.461 1.874

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.317 -0.105 0.069
0.03-0.10 Gyr 0.067 0.423 0.708
0.10-0.33 Gyr 0.083 0.411 0.683
0.33-1.06 Gyr -0.942 -0.225 0.100
1.06-3.43 Gyr -1.073 -0.467 -0.161
3.43-11.16 Gyr -1.281 -0.590 -0.248
11.16-12.40 Gyr -1.346 -0.547 -0.040