2025ssn

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Information

Transient

Name: AT2025ssn
Right ascension: 21h44m58.29s
Declination: 34d19m38.96s
Discovery Date: July 25, 2025, 9:27 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.220

Host

Name:
Right ascension: 21h44m58.48s
Declination: 34d19m47.42s
Redshift: 0.091055
Photometric Redshift:
 

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 6.53
Cutout download processed 25.33
Global aperture construction processed 0.79
Local aperture photometry processed 4.44
Global aperture photometry processed 3.73
Validate local photometry processed 0.02
Validate global photometry processed 11.43
Host information processed 0.16
Global host SED inference processed 503.47
Local host SED inference processed 673.15
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) = 21h44m58.29s, 34d19m38.96s
semi major axis, semi minor axis (arcsec) = 1.18, 1.18
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_i 2.09 0.4 23.098 0.210 AB
PanSTARRS_z 2.39 0.89 22.955 0.403 AB
PanSTARRS_y -0.04 2.68 AB

Aperture details

RA, DEC (J2000) = 21h44m58.48s, 34d19m47.60s
semi major axis, semi minor axis (arcsec) = 6.87, 3.89
angle (degrees, anti-clockwise from east) = -71.95

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 3.88 3.05 22.429 0.854 AB
GALEX_NUV -0.01 2.08 AB
PanSTARRS_g 201.32 1.44 18.140 0.008 AB
PanSTARRS_r 524.2 1.38 17.101 0.003 AB
PanSTARRS_i 875.13 1.81 16.545 0.002 AB
PanSTARRS_z 1219.03 3.98 16.185 0.004 AB
PanSTARRS_y 1469.04 11.45 15.982 0.008 AB
2MASS_J 2311.88 174.04 14.595 0.082 Vega
2MASS_H 3076.65 253.42 13.812 0.089 Vega
2MASS_K 2880.87 236.92 13.413 0.089 Vega
WISE_W1 1090.67 27.73 13.607 0.028 Vega
WISE_W3 122.51 47.44 13.506 0.420 Vega
WISE_W4 131.01 267.03 11.987 2.213 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})\, 7.534 8.090 8.572
{\rm log}_{10}({\rm SFR}) -1.176 -0.729 -0.226
{\rm log}_{10}({\rm sSFR}) -9.567 -8.711 -7.966
{\rm stellar\ age} 0.092 4.408 7.206

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.237 -0.503 0.049
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.449 -0.732 0.043

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 1.190 1.741 2.528
\delta -0.032 0.177 0.334
\tau_1/\tau_2 0.704 1.079 1.494
Q_{PAH} 0.822 2.679 5.307
U_{min} 3.116 8.899 16.667
{\rm log}_{10}(\gamma_e)\, -2.864 -1.541 -0.505

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.615 -0.367 0.268
{\rm log}_{10}(\tau_{AGN})\, 1.152 1.603 1.992

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.064 -0.512 0.027
0.03-0.10 Gyr -3.054 -1.320 -0.466
0.10-0.33 Gyr -4.475 -1.920 -1.080
0.33-1.06 Gyr -5.603 -2.238 -1.448
1.06-3.47 Gyr -6.047 -2.342 -1.490
3.47-11.31 Gyr -6.294 -2.282 -1.428
11.31-12.56 Gyr -6.581 -2.289 -1.137

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.801 10.896 11.007
{\rm log}_{10}({\rm SFR}) -4.472 -1.447 -0.082
{\rm log}_{10}({\rm sSFR}) -15.284 -12.307 -10.969
{\rm stellar\ age} 7.112 8.634 11.900

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.311 -0.936 -0.648
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.499 -0.626 0.132

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.304 0.488 0.686
\delta -0.888 -0.673 -0.388
\tau_1/\tau_2 0.521 0.972 1.440
Q_{PAH} 0.274 1.175 3.853
U_{min} 2.878 9.115 17.023
{\rm log}_{10}(\gamma_e)\, -3.223 -1.688 -0.579

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.346 -3.200 -1.889
{\rm log}_{10}(\tau_{AGN})\, 1.086 1.533 1.917

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -5.965 -1.993 -0.460
0.03-0.10 Gyr -5.304 -1.712 -0.024
0.10-0.33 Gyr -5.250 -1.699 0.077
0.33-1.06 Gyr -5.118 -1.775 0.115
1.06-3.47 Gyr -3.381 -0.991 0.728
3.47-11.31 Gyr -1.394 0.790 1.166
11.31-12.56 Gyr -0.155 1.545 2.152