2025gdg

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Information

Transient

Name: AT2025gdg
Right ascension: 8h30m50.74s
Declination: 34d48m03.61s
Discovery Date: March 28, 2025, 8:06 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.036

Host

Name: 2025gdg
Right ascension: 8h30m51.06s
Declination: 34d48m09.12s
Redshift: None
Photometric Redshift: 0.151
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 3.57
Cutout download processed 21.16
Global aperture construction processed 0.64
Local aperture photometry processed 7.55
Global aperture photometry processed 7.67
Validate local photometry no valid phot 0.03
Validate global photometry processed 19.37
Host information processed 0.11
Global host SED inference processed 441.6
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.04
Host MWEBV processed 0.09
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) = 8h30m50.74s, 34d48m03.61s
semi major axis, semi minor axis (arcsec) = 0.76, 0.76
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) = 8h30m51.10s, 34d48m09.89s
semi major axis, semi minor axis (arcsec) = 14.44, 4.34
angle (degrees, anti-clockwise from east) = -137.38

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 22.11 1.29 20.538 0.063 AB
GALEX_NUV 24.67 0.98 20.420 0.043 AB
SDSS_u 49.74 7.21 19.658 0.157 AB
DES_g 134.78 1.15 18.576 0.009 AB
PanSTARRS_g 136.0 1.54 18.566 0.012 AB
SDSS_r 208.61 4.86 18.102 0.025 AB
PanSTARRS_r 190.41 1.91 18.201 0.011 AB
DES_r 203.0 1.64 18.131 0.009 AB
SDSS_i 216.36 6.43 18.062 0.032 AB
PanSTARRS_i 228.94 1.84 18.001 0.009 AB
PanSTARRS_z 236.77 4.85 17.964 0.022 AB
SDSS_z 105.44 16.24 18.842 0.167 AB
DES_z 249.05 3.17 17.909 0.014 AB
PanSTARRS_y 252.16 12.33 17.896 0.053 AB
2MASS_J 79.54 166.05 18.254 2.267 Vega
2MASS_H 202.14 258.78 16.768 1.390 Vega
2MASS_K -74.81 288.37 Vega
WISE_W1 101.18 12.14 16.188 0.130 Vega
WISE_W2 27.06 17.77 16.980 0.713 Vega
WISE_W3 137.73 112.52 13.378 0.887 Vega
WISE_W4 -597.35 517.79 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})\, 9.785 9.853 9.976
{\rm log}_{10}({\rm SFR}) -0.118 0.231 0.516
{\rm log}_{10}({\rm sSFR}) -10.020 -9.647 -9.314
{\rm stellar\ age} 0.685 1.401 3.216

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.287 -0.502 -0.120
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.580 -1.108 -0.133

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.079 0.131 0.239
\delta -0.862 -0.562 -0.153
\tau_1/\tau_2 0.782 1.213 1.615
Q_{PAH} 1.019 2.798 4.801
U_{min} 2.437 7.597 14.661
{\rm log}_{10}(\gamma_e)\, -2.564 -1.445 -0.517

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.968 -2.331 -1.309
{\rm log}_{10}(\tau_{AGN})\, 1.069 1.509 1.907

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.004 0.240 0.420
0.03-0.10 Gyr -0.397 0.229 0.581
0.10-0.32 Gyr 0.371 0.785 1.136
0.32-1.03 Gyr 0.637 0.945 1.087
1.03-3.32 Gyr -1.754 -0.587 0.080
3.32-10.66 Gyr -2.434 -1.040 -0.309
10.66-11.85 Gyr -2.559 -1.051 -0.213