2026gcy results

Information

Transient
Name:AT2026gcy
Right ascension: 10h17m23.42s
Declination:37d28m55.06s
Discovery Date:Feb. 20, 2026, 4:35 p.m.
Classification:None
Redshift:None
MW E(B-V):0.011
Host
Name:J101723.40+372855.39
Object ID:9907734156215859
Catalog Name:decals
Catalog Release:dr9
Right ascension: 10h17m23.40s
Declination:37d28m55.39s
Redshift:None
Photometric Redshift:0.055
 

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_z
DES_r
DES_i
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 19.46
Transient MWEBV processed 0.11
Host match processed 6.17
Host information processed 0.15
Host MWEBV processed 0.17
Global aperture construction processed 0.66
Global aperture photometry processed 5.72
Validate global photometry processed 15.96
Global host SED inference processed 474.16
Local aperture photometry processed 5.93
Validate local photometry processed 0.03
Local host SED inference processed 495.74
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):10h17m23.42s, 37d28m55.06s
semi major axis, semi minor axis (arcsec):1.87, 1.87
angle (degrees, anti-clockwise from east):0.0
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 18.31 2.6 20.743 0.154 AB
SDSS_g 29.45 1.74 20.227 0.064 AB
DES_g 28.35 0.42 20.269 0.016 AB
PanSTARRS_g 25.86 0.61 20.369 0.025 AB
SDSS_r 28.41 1.83 20.266 0.070 AB
PanSTARRS_r 28.95 0.57 20.246 0.021 AB
SDSS_i 34.4 2.27 20.059 0.072 AB
PanSTARRS_i 34.1 0.51 20.068 0.016 AB
PanSTARRS_z 32.27 0.91 20.128 0.031 AB
SDSS_z 37.2 5.38 19.974 0.157 AB
DES_z 38.3 0.85 19.942 0.024 AB
PanSTARRS_y 31.76 2.59 20.145 0.089 AB

Aperture details

RA, DEC (J2000):10h17m23.33s, 37d28m56.37s
semi major axis, semi minor axis (arcsec):4.67, 3.22
angle (degrees, anti-clockwise from east):-51.82
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 22.77 4.88 20.507 0.233 AB
GALEX_NUV 24.68 0.8 20.419 0.035 AB
SDSS_u 32.98 5.3 20.104 0.175 AB
SDSS_g 57.86 2.98 19.494 0.056 AB
DES_g 58.0 0.62 19.491 0.012 AB
PanSTARRS_g 59.53 1.25 19.463 0.023 AB
SDSS_r 64.77 3.31 19.372 0.055 AB
PanSTARRS_r 64.71 1.16 19.373 0.019 AB
SDSS_i 80.92 4.23 19.130 0.057 AB
PanSTARRS_i 74.71 1.02 19.216 0.015 AB
PanSTARRS_z 73.78 1.84 19.230 0.027 AB
SDSS_z 87.15 11.0 19.049 0.137 AB
DES_z 74.13 1.35 19.225 0.020 AB
PanSTARRS_y 76.42 5.26 19.192 0.075 AB
WISE_W1 33.44 8.66 17.390 0.281 Vega
WISE_W2 7.1 12.95 18.432 1.980 Vega
WISE_W3 -0.58 58.83 Vega
WISE_W4 -602.92 398.74 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 7.823 8.113 8.345
{\rm log}_{10}({\rm SFR}) -1.557 -0.541 0.019
{\rm log}_{10}({\rm sSFR}) -9.729 -8.609 -7.917
{\rm stellar\ age} 0.081 1.128 5.426

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.645 -1.174 -0.498
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.639 -1.063 -0.245

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.123 0.421 0.892
\delta -0.605 -0.170 0.114
\tau_1/\tau_2 0.616 1.110 1.544
Q_{PAH} 1.079 2.765 5.182
U_{min} 3.186 9.352 17.694
{\rm log}_{10}(\gamma_e)\, -3.126 -2.131 -0.962

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.659 -0.606 0.079
{\rm log}_{10}(\tau_{AGN})\, 1.156 1.483 1.875

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.724 -1.627 -1.136
0.03-0.10 Gyr -1.571 -0.393 0.180
0.10-0.33 Gyr -3.325 -1.232 -0.442
0.33-1.08 Gyr -5.251 -2.304 -1.149
1.08-3.56 Gyr -6.562 -3.114 -1.642
3.56-11.72 Gyr -7.658 -3.450 -1.821
11.72-13.02 Gyr -7.915 -3.266 -1.648

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.252 8.611 8.817
{\rm log}_{10}({\rm SFR}) -0.626 -0.293 0.077
{\rm log}_{10}({\rm sSFR}) -9.301 -8.912 -8.228
{\rm stellar\ age} 1.113 5.041 7.153

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.641 -1.177 -0.553
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.498 0.009 0.365

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.073 0.272 0.599
\delta -0.245 0.112 0.297
\tau_1/\tau_2 0.660 1.143 1.572
Q_{PAH} 0.988 2.581 4.743
U_{min} 3.146 9.244 16.819
{\rm log}_{10}(\gamma_e)\, -2.808 -1.674 -0.751

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.245 -1.205 -0.554
{\rm log}_{10}(\tau_{AGN})\, 1.311 1.642 1.927

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.233 -1.254 -0.950
0.03-0.10 Gyr -0.496 -0.150 0.235
0.10-0.33 Gyr -2.302 -0.765 -0.345
0.33-1.08 Gyr -3.389 -1.479 -0.975
1.08-3.56 Gyr -3.794 -1.608 -1.147
3.56-11.72 Gyr -3.614 -1.596 -1.158
11.72-13.02 Gyr -3.707 -1.535 -0.805