2025gdd

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Information

Transient

Name: AT2025gdd
Right ascension: 18h37m38.60s
Declination: -81d21m16.70s
Discovery Date: March 6, 2025, 7:53 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.162

Host

Name: 2025gdd
Right ascension: 18h37m36.40s
Declination: -81d21m17.15s
Redshift: 0.052472
Photometric Redshift:
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 1.05
Cutout download processed 2.84
Global aperture construction processed 0.16
Local aperture photometry processed 0.8
Global aperture photometry processed 0.87
Validate local photometry no valid phot 0.01
Validate global photometry processed 0.8
Host information processed 0.09
Global host SED inference processed 542.84
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.05
Host MWEBV processed 0.08
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) = 18h37m38.60s, -81d21m16.70s
semi major axis, semi minor axis (arcsec) = 1.96, 1.96
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) = 18h37m36.53s, -81d21m17.04s
semi major axis, semi minor axis (arcsec) = 12.19, 9.12
angle (degrees, anti-clockwise from east) = -36.49

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_NUV 29.35 3.56 20.231 0.132 AB
WISE_W1 848.95 33.35 13.879 0.043 Vega
WISE_W2 545.94 29.8 13.718 0.059 Vega
WISE_W3 2204.83 110.64 10.368 0.054 Vega
WISE_W4 1904.85 491.05 9.080 0.280 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})\, 9.811 10.054 10.192
{\rm log}_{10}({\rm SFR}) -0.304 0.131 0.554
{\rm log}_{10}({\rm sSFR}) -10.391 -9.894 -9.392
{\rm stellar\ age} 5.127 7.569 10.420

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.801 -0.349 -0.010
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.508 -0.540 0.073

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.145 0.279 0.506
\delta -0.692 -0.265 0.080
\tau_1/\tau_2 0.247 0.684 1.275
Q_{PAH} 0.409 1.320 3.401
U_{min} 2.263 6.523 13.470
{\rm log}_{10}(\gamma_e)\, -3.648 -3.033 -2.062

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.110 -2.909 -1.863
{\rm log}_{10}(\tau_{AGN})\, 0.989 1.422 1.838

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.353 0.177 0.500
0.03-0.10 Gyr -1.262 -0.036 0.653
0.10-0.33 Gyr -1.872 -0.607 0.170
0.33-1.08 Gyr -2.101 -0.585 0.078
1.08-3.57 Gyr -1.507 -0.270 0.143
3.57-11.75 Gyr -0.759 0.045 0.308
11.75-13.06 Gyr -0.693 0.247 1.104