2026si

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Information

Transient

Name: AT2026si
Right ascension: 11h40m11.82s
Declination: 1d43m58.16s
Discovery Date: Jan. 9, 2026, 8:42 p.m.
Classification: None
Redshift: None
MW E(B-V):

Host

Name:
Right ascension: 11h40m11.88s
Declination: 1d43m59.50s
Redshift: 0.102370
Photometric Redshift:
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 20.34
Transient MWEBV processed 0.04
Host match processed 4.76
Host information processed 0.15
Host MWEBV processed 0.05
Global aperture construction processed 0.65
Global aperture photometry processed 6.73
Validate global photometry processed 19.24
Global host SED inference processed 410.03
Local aperture photometry processed 8.14
Validate local photometry processed 0.03
Local host SED inference processed 546.22
 

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) = 11h40m11.82s, 1d43m58.16s
semi major axis, semi minor axis (arcsec) = 1.06, 1.06
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 23.85 1.2 20.456 0.055 AB
PanSTARRS_y 21.01 1.45 20.594 0.075 AB

Aperture details

RA, DEC (J2000) = 11h40m11.88s, 1d43m59.71s
semi major axis, semi minor axis (arcsec) = 4.38, 2.73
angle (degrees, anti-clockwise from east) = -145.73

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 9.43 3.05 21.464 0.351 AB
GALEX_NUV 14.41 0.66 21.004 0.050 AB
SDSS_u 33.32 3.17 20.093 0.103 AB
SDSS_g 57.27 2.29 19.505 0.043 AB
DES_g 61.25 0.69 19.432 0.012 AB
PanSTARRS_g 57.86 0.67 19.494 0.013 AB
SDSS_r 86.21 3.0 19.061 0.038 AB
PanSTARRS_r 81.58 0.91 19.121 0.012 AB
DES_r 83.3 0.78 19.098 0.010 AB
SDSS_i 112.3 4.06 18.774 0.039 AB
PanSTARRS_i 104.66 0.75 18.851 0.008 AB
PanSTARRS_z 115.67 1.87 18.742 0.018 AB
SDSS_z 150.75 12.22 18.454 0.088 AB
DES_z 114.76 2.82 18.751 0.027 AB
PanSTARRS_y 128.09 4.56 18.631 0.039 AB
2MASS_J 36.85 121.01 19.089 3.566 Vega
2MASS_H 14.29 165.95 19.645 12.611 Vega
2MASS_K 123.66 209.92 16.832 1.843 Vega
WISE_W1 51.76 1.54 16.916 0.032 Vega
WISE_W2 39.09 1.93 16.581 0.054 Vega
WISE_W3 62.65 8.04 14.234 0.139 Vega
WISE_W4 476.98 36.4 10.584 0.083 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.400 8.904 9.155
{\rm log}_{10}({\rm SFR}) -0.995 -0.485 -0.076
{\rm log}_{10}({\rm sSFR}) -9.979 -9.350 -8.551
{\rm stellar\ age} 1.833 5.716 8.048

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.606 -0.824 -0.092
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.253 -0.641 0.064

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.508 0.928 1.415
\delta -0.551 -0.105 0.239
\tau_1/\tau_2 0.460 0.850 1.275
Q_{PAH} 0.712 2.344 4.952
U_{min} 3.182 8.551 16.211
{\rm log}_{10}(\gamma_e)\, -3.088 -1.951 -0.648

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.991 -1.035 -0.167
{\rm log}_{10}(\tau_{AGN})\, 0.932 1.390 1.906

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.869 -0.265 0.088
0.03-0.10 Gyr -2.243 -0.830 -0.135
0.10-0.33 Gyr -3.460 -1.336 -0.594
0.33-1.06 Gyr -3.712 -1.385 -0.651
1.06-3.44 Gyr -3.287 -1.390 -0.819
3.44-11.18 Gyr -2.816 -1.291 -0.740
11.18-12.42 Gyr -2.819 -1.225 -0.274

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.404 9.509 9.621
{\rm log}_{10}({\rm SFR}) -0.391 -0.064 0.227
{\rm log}_{10}({\rm sSFR}) -9.942 -9.599 -9.253
{\rm stellar\ age} 5.420 6.509 7.701

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.326 -0.898 -0.544
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.533 -0.105 0.329

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.098 0.175 0.320
\delta -0.777 -0.372 0.009
\tau_1/\tau_2 0.624 0.983 1.359
Q_{PAH} 0.297 0.938 1.986
U_{min} 2.814 7.777 14.697
{\rm log}_{10}(\gamma_e)\, -2.741 -1.966 -1.285

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.400 -3.459 -2.274
{\rm log}_{10}(\tau_{AGN})\, 1.014 1.477 1.915

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.222 -0.812 -0.599
0.03-0.10 Gyr -0.292 0.076 0.377
0.10-0.33 Gyr -0.481 -0.073 0.204
0.33-1.06 Gyr -1.088 -0.566 -0.275
1.06-3.44 Gyr -0.947 -0.552 -0.320
3.44-11.18 Gyr -0.651 -0.394 -0.214
11.18-12.42 Gyr -0.842 -0.314 0.195