2025gcn

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Information

Transient

Name: AT2025gcn
Right ascension: 12h42m46.61s
Declination: -22d59m39.56s
Discovery Date: March 23, 2025, 7:31 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.063

Host

Name: 2025gcn
Right ascension: 12h42m46.50s
Declination: -22d59m40.52s
Redshift: None
Photometric Redshift: 0.134
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 2.36
Cutout download processed 14.93
Global aperture construction processed 0.63
Local aperture photometry processed 5.53
Global aperture photometry processed 5.52
Validate local photometry no valid phot 0.02
Validate global photometry processed 16.25
Host information processed 0.09
Global host SED inference processed 400.72
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.04
Host MWEBV processed 0.04
Log transient processing status blocked None
 

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) = 12h42m46.61s, -22d59m39.56s
semi major axis, semi minor axis (arcsec) = 0.84, 0.84
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys

Aperture details

RA, DEC (J2000) = 12h42m46.51s, -22d59m40.23s
semi major axis, semi minor axis (arcsec) = 6.26, 4.16
angle (degrees, anti-clockwise from east) = -101.32

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 9.68 3.12 21.435 0.350 AB
GALEX_NUV 14.28 2.01 21.013 0.153 AB
SDSS_u 16.58 5.53 20.851 0.362 AB
SDSS_g 86.19 3.02 19.061 0.038 AB
PanSTARRS_g 89.14 1.53 19.025 0.019 AB
SDSS_r 145.52 4.27 18.493 0.032 AB
PanSTARRS_r 131.73 1.74 18.601 0.014 AB
SDSS_i 192.75 5.89 18.188 0.033 AB
PanSTARRS_i 184.32 1.74 18.236 0.010 AB
PanSTARRS_z 199.5 3.4 18.150 0.019 AB
SDSS_z 266.43 17.58 17.836 0.072 AB
PanSTARRS_y 221.36 7.23 18.037 0.035 AB
2MASS_J 126.34 108.78 17.751 0.935 Vega
2MASS_H 534.9 172.92 15.712 0.351 Vega
2MASS_K 513.91 230.44 15.285 0.487 Vega
WISE_W1 112.68 10.88 16.071 0.105 Vega
WISE_W2 78.89 14.21 15.819 0.196 Vega
WISE_W3 186.44 53.67 13.050 0.313 Vega
WISE_W4 133.36 315.61 11.967 2.569 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.936 10.013 10.108
{\rm log}_{10}({\rm SFR}) -0.120 0.195 0.532
{\rm log}_{10}({\rm sSFR}) -10.136 -9.824 -9.473
{\rm stellar\ age} 4.633 5.707 6.660

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.221 -0.819 -0.443
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.115 0.259 0.410

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.120 0.211 0.352
\delta -0.700 -0.291 0.048
\tau_1/\tau_2 0.744 1.069 1.413
Q_{PAH} 0.316 1.040 2.338
U_{min} 2.330 6.802 13.942
{\rm log}_{10}(\gamma_e)\, -2.916 -2.040 -1.071

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.290 -3.236 -2.160
{\rm log}_{10}(\tau_{AGN})\, 1.003 1.508 1.901

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.419 -0.203 -0.027
0.03-0.10 Gyr -0.069 0.302 0.670
0.10-0.32 Gyr 0.275 0.525 0.746
0.32-1.04 Gyr -0.070 0.240 0.470
1.04-3.36 Gyr -0.141 0.120 0.321
3.36-10.84 Gyr -0.124 0.105 0.264
10.84-12.04 Gyr -0.379 0.086 0.510