2025sei

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Information

Transient

Name: SN2025sei
Right ascension: 17h48m59.45s
Declination: 25d29m45.09s
Discovery Date: July 23, 2025, 6:39 a.m.
Classification: SLSN-I
Redshift: 0.094900
MW E(B-V): 0.082

Host

Name:
Right ascension: 17h48m59.45s
Declination: 25d29m45.20s
Redshift: None
Photometric Redshift: 0.092
 

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 10.02
Cutout download processed 40.12
Global aperture construction processed 0.69
Local aperture photometry processed 7.47
Global aperture photometry processed 6.96
Validate local photometry processed 0.03
Validate global photometry processed 18.09
Host information processed 0.15
Global host SED inference processed 461.81
Local host SED inference processed 623.95
Transient information processed 0.0
Transient MWEBV processed 0.1
Host MWEBV processed 0.11
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) = 17h48m59.45s, 25d29m45.09s
semi major axis, semi minor axis (arcsec) = 1.14, 1.14
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_r 245.53 1.45 17.925 0.006 AB
PanSTARRS_i 286.22 0.43 17.758 0.002 AB
PanSTARRS_z 375.05 0.93 17.465 0.003 AB
DES_z 442.13 3.52 17.286 0.009 AB
PanSTARRS_y 400.56 2.15 17.393 0.006 AB

Aperture details

RA, DEC (J2000) = 17h48m59.44s, 25d29m45.39s
semi major axis, semi minor axis (arcsec) = 6.44, 4.99
angle (degrees, anti-clockwise from east) = -32.66

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_NUV 2.8 1.19 22.784 0.463 AB
SDSS_u 36.8 4.37 19.985 0.129 AB
SDSS_g 242.48 4.27 17.938 0.019 AB
DES_g 265.52 0.78 17.840 0.003 AB
PanSTARRS_g 272.61 1.47 17.811 0.006 AB
SDSS_r 566.62 6.59 17.017 0.013 AB
PanSTARRS_r 586.32 1.52 16.980 0.003 AB
DES_r 632.98 2.42 16.897 0.004 AB
SDSS_i 840.34 8.54 16.589 0.011 AB
PanSTARRS_i 839.42 1.82 16.590 0.002 AB
PanSTARRS_z 1097.42 4.17 16.299 0.004 AB
SDSS_z 1234.89 20.96 16.171 0.018 AB
DES_z 1165.75 5.89 16.233 0.005 AB
PanSTARRS_y 1249.08 10.43 16.159 0.009 AB
2MASS_J 1674.36 150.03 14.945 0.097 Vega
2MASS_H 2170.42 244.31 14.191 0.122 Vega
2MASS_K 1802.36 232.05 13.923 0.140 Vega
WISE_W1 754.69 19.88 14.007 0.029 Vega
WISE_W2 433.97 22.46 13.967 0.056 Vega
WISE_W3 215.29 64.46 12.893 0.325 Vega
WISE_W4 184.4 365.01 11.616 2.149 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})\, 9.799 10.085 10.224
{\rm log}_{10}({\rm SFR}) -1.494 -0.252 0.740
{\rm log}_{10}({\rm sSFR}) -11.648 -10.374 -9.244
{\rm stellar\ age} 1.654 5.847 7.977

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.934 -0.431 -0.066
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.573 -0.834 0.005

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.137 0.440 0.888
\delta -0.667 -0.275 0.200
\tau_1/\tau_2 0.658 1.060 1.460
Q_{PAH} 1.279 3.149 5.601
U_{min} 3.336 9.160 17.217
{\rm log}_{10}(\gamma_e)\, -3.173 -2.011 -0.723

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.846 -2.185 -0.717
{\rm log}_{10}(\tau_{AGN})\, 0.992 1.562 1.996

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.664 -1.127 -0.490
0.03-0.10 Gyr -1.726 -0.139 0.898
0.10-0.33 Gyr -1.234 0.221 0.979
0.33-1.06 Gyr -1.844 0.095 0.655
1.06-3.46 Gyr -2.247 0.006 0.405
3.46-11.26 Gyr -2.196 -0.016 0.329
11.26-12.52 Gyr -2.088 0.091 0.865

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.591 10.705 10.778
{\rm log}_{10}({\rm SFR}) -5.299 -2.205 -0.894
{\rm log}_{10}({\rm sSFR}) -16.284 -12.825 -11.537
{\rm stellar\ age} 5.831 7.357 9.904

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.176 -0.953 -0.788
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.521 -0.770 0.016

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.260 0.367 0.495
\delta -0.933 -0.767 -0.537
\tau_1/\tau_2 0.550 0.989 1.424
Q_{PAH} 0.514 1.438 2.911
U_{min} 3.320 10.266 18.440
{\rm log}_{10}(\gamma_e)\, -2.894 -1.956 -1.091

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.442 -3.509 -2.485
{\rm log}_{10}(\tau_{AGN})\, 1.043 1.545 1.918

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -6.657 -2.859 -1.104
0.03-0.10 Gyr -6.183 -2.457 -0.843
0.10-0.33 Gyr -4.886 -1.935 -0.473
0.33-1.06 Gyr -3.286 -1.107 0.157
1.06-3.46 Gyr -1.858 0.356 1.007
3.46-11.26 Gyr -0.466 0.854 1.048
11.26-12.52 Gyr -1.364 0.710 1.729