2025gcu

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Information

Transient

Name: AT2025gcu
Right ascension: 17h11m54.66s
Declination: 28d54m31.88s
Discovery Date: March 27, 2025, 2:05 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.042

Host

Name: 2025gcu
Right ascension: 17h11m54.32s
Declination: 28d54m31.32s
Redshift: None
Photometric Redshift: 0.065
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 3.11
Cutout download processed 20.31
Global aperture construction processed 0.7
Local aperture photometry processed 7.34
Global aperture photometry processed 7.47
Validate local photometry processed 0.03
Validate global photometry processed 20.03
Host information processed 0.12
Global host SED inference processed 386.11
Local host SED inference processed 415.39
Transient information processed 0.0
Transient MWEBV processed 0.04
Host MWEBV processed 0.05
Log transient processing status processed 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) = 17h11m54.66s, 28d54m31.88s
semi major axis, semi minor axis (arcsec) = 1.6, 1.6
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 3.75 1.46 22.464 0.423 AB
SDSS_g 6.85 0.82 21.811 0.131 AB
DES_g 6.44 0.2 21.878 0.034 AB
PanSTARRS_g 6.05 0.35 21.946 0.063 AB
SDSS_r 10.61 1.09 21.335 0.111 AB
PanSTARRS_r 11.11 0.5 21.286 0.049 AB
DES_r 13.0 0.41 21.115 0.034 AB
SDSS_i 15.29 1.6 20.939 0.114 AB
PanSTARRS_i 17.7 0.7 20.780 0.043 AB
PanSTARRS_z 19.6 1.02 20.669 0.056 AB
SDSS_z 9.38 4.46 21.470 0.516 AB
DES_z 20.69 1.37 20.611 0.072 AB
PanSTARRS_y 22.93 2.46 20.499 0.116 AB

Aperture details

RA, DEC (J2000) = 17h11m54.31s, 28d54m31.31s
semi major axis, semi minor axis (arcsec) = 7.86, 4.68
angle (degrees, anti-clockwise from east) = -135.58

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 8.21 0.93 21.614 0.123 AB
GALEX_NUV 13.24 0.45 21.095 0.037 AB
SDSS_u 56.71 5.65 19.516 0.108 AB
SDSS_g 210.66 4.16 18.091 0.021 AB
DES_g 230.79 0.99 17.992 0.005 AB
PanSTARRS_g 224.46 1.34 18.022 0.006 AB
SDSS_r 424.36 5.94 17.331 0.015 AB
PanSTARRS_r 450.32 1.9 17.266 0.005 AB
DES_r 477.86 2.17 17.202 0.005 AB
SDSS_i 637.84 8.05 16.888 0.014 AB
PanSTARRS_i 629.42 2.65 16.903 0.005 AB
PanSTARRS_z 776.05 3.82 16.675 0.005 AB
SDSS_z 731.8 17.82 16.739 0.026 AB
DES_z 826.16 7.91 16.607 0.010 AB
PanSTARRS_y 901.2 9.24 16.513 0.011 AB
2MASS_J 1273.78 133.8 15.242 0.114 Vega
2MASS_H 1520.12 179.86 14.578 0.128 Vega
2MASS_K 1651.02 229.5 14.018 0.151 Vega
WISE_W1 643.39 34.54 14.180 0.058 Vega
WISE_W2 461.57 26.38 13.900 0.062 Vega
WISE_W3 1574.62 84.61 10.733 0.058 Vega
WISE_W4 1037.0 381.76 9.741 0.400 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})\, 8.401 8.602 8.758
{\rm log}_{10}({\rm SFR}) -1.829 -1.305 -0.684
{\rm log}_{10}({\rm sSFR}) -10.523 -9.930 -9.146
{\rm stellar\ age} 3.000 6.393 7.842

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.666 -1.072 -0.367
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.730 -0.722 0.214

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.627 1.056 1.600
\delta -0.257 -0.007 0.230
\tau_1/\tau_2 0.735 1.077 1.427
Q_{PAH} 0.811 2.283 4.387
U_{min} 3.171 8.052 15.379
{\rm log}_{10}(\gamma_e)\, -2.831 -1.680 -0.598

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.032 -0.596 -0.023
{\rm log}_{10}(\tau_{AGN})\, 1.094 1.505 1.897

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.957 -1.335 -0.903
0.03-0.10 Gyr -2.015 -1.347 -0.608
0.10-0.33 Gyr -2.215 -1.435 -0.856
0.33-1.08 Gyr -2.395 -1.485 -0.993
1.08-3.54 Gyr -2.405 -1.384 -1.096
3.54-11.60 Gyr -2.263 -1.347 -1.093
11.60-12.89 Gyr -2.340 -1.362 -0.778

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.192 10.240 10.308
{\rm log}_{10}({\rm SFR}) -0.719 -0.492 -0.254
{\rm log}_{10}({\rm sSFR}) -10.979 -10.734 -10.486
{\rm stellar\ age} 7.487 8.177 10.374

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.763 -0.562 -0.399
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.247 0.164 0.382

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.214 0.328 0.485
\delta -0.463 -0.153 0.094
\tau_1/\tau_2 0.664 1.020 1.404
Q_{PAH} 1.090 2.607 4.692
U_{min} 2.444 7.053 14.278
{\rm log}_{10}(\gamma_e)\, -3.067 -1.832 -1.019

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.105 -1.596 -1.241
{\rm log}_{10}(\tau_{AGN})\, 1.018 1.392 1.731

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.620 -0.427 -0.254
0.03-0.10 Gyr -0.909 -0.526 -0.211
0.10-0.33 Gyr -1.131 -0.634 -0.310
0.33-1.08 Gyr -1.264 -0.684 -0.324
1.08-3.54 Gyr -1.119 -0.407 0.034
3.54-11.60 Gyr 0.095 0.412 0.509
11.60-12.89 Gyr 0.157 0.655 1.246