2026sfn results

Information

Transient
Name:AT2026sfn
Right ascension: 21h28m47.60s
Declination:20d31m03.04s
Discovery Date:July 7, 2026, 9:43 a.m.
Classification:Impostor-SN
Redshift:0.017700
MW E(B-V):0.079
Host
Name:21284834+2030392
Object ID:1034688.0
Catalog Name:glade
Catalog Release:latest
Right ascension: 21h28m48.35s
Declination:20d30m39.20s
Redshift:0.017617
Photometric Redshift:None
 

Cutout Download Report

Downloaded Unavailable
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
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 4.97
Transient MWEBV processed 0.13
Host match processed 4.35
Host information processed 0.13
Host MWEBV processed 0.08
Global aperture construction processed 1.36
Global aperture photometry processed 4.06
Validate global photometry processed 10.89
Global host SED inference processed 1821.35
Local aperture photometry processed 4.08
Validate local photometry processed 0.02
Local host SED inference processed 460.71
 

Imaging data


 

Spectral Energy Distribution


Warning: possible contaminating objects in the global aperture

 

Aperture Photometry


Aperture details

RA, DEC (J2000):21h28m47.60s, 20d31m03.04s
semi major axis, semi minor axis (arcsec):5.59, 5.59
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 6.56 2.42 21.858 0.401 AB
GALEX_NUV 8.79 1.73 21.540 0.214 AB
PanSTARRS_g 116.66 1.27 18.733 0.012 AB
PanSTARRS_r 192.48 1.57 18.189 0.009 AB
PanSTARRS_i 215.57 1.96 18.066 0.010 AB
PanSTARRS_z 245.26 4.16 17.926 0.018 AB
PanSTARRS_y 331.17 9.71 17.600 0.032 AB
2MASS_J 185.17 133.52 17.336 0.783 Vega
2MASS_H 635.4 208.47 15.525 0.356 Vega
2MASS_K 172.36 220.2 16.471 1.387 Vega

Aperture details

RA, DEC (J2000):21h28m48.35s, 20d30m38.99s
semi major axis, semi minor axis (arcsec):40.9, 12.43
angle (degrees, anti-clockwise from east):352.15
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 252.79 12.56 17.893 0.054 AB
GALEX_NUV 428.79 9.56 17.319 0.024 AB
PanSTARRS_g 17285.11 5.83 13.306 0.000 AB
PanSTARRS_r 30275.94 7.38 12.697 0.000 AB
PanSTARRS_z 42324.61 17.45 12.334 0.000 AB
PanSTARRS_y 45822.03 39.65 12.247 0.001 AB
2MASS_J 48018.64 549.51 11.302 0.012 Vega
2MASS_H 52380.97 853.26 10.734 0.018 Vega
2MASS_K 38727.48 900.98 10.592 0.025 Vega
WISE_W1 18378.94 403.34 10.540 0.024 Vega
WISE_W2 11425.27 173.71 10.416 0.017 Vega
WISE_W3 32471.65 775.87 7.447 0.026 Vega
WISE_W4 51761.52 3898.88 5.495 0.082 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.185 8.447 8.653
{\rm log}_{10}({\rm SFR}) -1.601 -1.162 -0.809
{\rm log}_{10}({\rm sSFR}) -10.153 -9.597 -9.086
{\rm stellar\ age} 3.116 6.295 8.402

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.803 -1.391 -0.533
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.259 -0.257 -0.005

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.480 0.813 1.129
\delta -0.404 -0.090 0.184
\tau_1/\tau_2 0.697 1.029 1.365
Q_{PAH} 0.539 1.795 3.650
U_{min} 2.774 7.687 14.720
{\rm log}_{10}(\gamma_e)\, -3.447 -2.211 -1.197

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.362 -3.203 -1.078
{\rm log}_{10}(\tau_{AGN})\, 0.941 1.474 1.962

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.353 -1.078 -0.779
0.03-0.10 Gyr -2.102 -1.244 -0.780
0.10-0.33 Gyr -2.411 -1.371 -0.895
0.33-1.10 Gyr -2.611 -1.546 -1.106
1.10-3.66 Gyr -2.683 -1.602 -1.236
3.66-12.17 Gyr -2.469 -1.590 -1.225
12.17-13.52 Gyr -2.569 -1.613 -0.925

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.789 10.917 10.957
{\rm log}_{10}({\rm SFR}) -1.697 -1.052 -0.510
{\rm log}_{10}({\rm sSFR}) -12.644 -11.954 -11.390
{\rm stellar\ age} 8.784 12.783 12.843

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.868 -1.700 -1.487
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.242 -0.498 0.081

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.037 0.091 0.151
\delta -0.915 -0.703 -0.306
\tau_1/\tau_2 0.384 0.896 1.453
Q_{PAH} 0.586 1.796 4.095
U_{min} 3.282 10.355 18.385
{\rm log}_{10}(\gamma_e)\, -3.200 -1.755 -0.674

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.172 -1.592 -1.270
{\rm log}_{10}(\tau_{AGN})\, 1.724 1.947 2.073

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.103 -0.988 -0.420
0.03-0.10 Gyr -3.780 -1.568 -0.520
0.10-0.33 Gyr -5.538 -2.875 -0.926
0.33-1.10 Gyr -6.122 -3.348 -0.982
1.10-3.66 Gyr -4.672 -2.617 -0.671
3.66-12.17 Gyr -2.358 -0.924 0.967
12.17-13.52 Gyr 1.192 2.038 2.082