2025gtd

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Information

Transient

Name: AT2025gtd
Right ascension: 8h24m52.41s
Declination: 2d53m39.58s
Discovery Date: April 4, 2025, 12:05 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.035

Host

Name: 2025gtd
Right ascension: 8h24m52.68s
Declination: 2d53m56.06s
Redshift: None
Photometric Redshift: 0.127
 

Processing Status

Cutout download
 Cutout download
processed
 status
Transient information
Transient information
processed
 status
Transient MWEBV
Transient MWEBV
processed
 status
Host match
 Host match
processed
 status
Host information
Host information
processed
 status
Local aperture photometry
 Local aperture photometry
processed
 status
Validate local photometry
 Validate local photometry
no valid phot
 status
Local host SED inference
Local host SED inference
not processed
 status
Host MWEBV
Host MWEBV
processed
 status
Global host SED inference
Global host SED inference
processed
 status
Validate global photometry
Validate global photometr...
processed
 status
Global aperture construction
 Global aperture construct...
processed
 status
Global aperture photometry
 Global aperture photometr...
processed
 status
Task Name Status Time taken (s) Warning Flag
Host match processed 2.25
Cutout download processed 19.23
Global aperture construction processed 0.65
Local aperture photometry processed 6.66
Global aperture photometry processed 6.86
Validate local photometry no valid phot 0.03
Validate global photometry processed 18.41
Host information processed 0.08
Global host SED inference processed 449.54
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.11
Host MWEBV processed 0.05
Processing status blocked N/A N/A
 

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) = 8h24m52.41s, 2d53m39.58s
semi major axis, semi minor axis (arcsec) = 0.88, 0.88
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) = 8h24m52.67s, 2d53m56.21s
semi major axis, semi minor axis (arcsec) = 5.85, 4.93
angle (degrees, anti-clockwise from east) = -13.52

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 24.86 4.12 20.411 0.180 AB
SDSS_g 92.52 2.95 18.984 0.035 AB
DES_g 95.07 0.59 18.955 0.007 AB
PanSTARRS_g 99.29 1.33 18.908 0.015 AB
SDSS_r 180.48 4.2 18.259 0.025 AB
PanSTARRS_r 183.95 1.3 18.238 0.008 AB
DES_r 201.44 1.28 18.140 0.007 AB
SDSS_i 275.45 5.79 17.800 0.023 AB
PanSTARRS_i 264.92 2.02 17.842 0.008 AB
PanSTARRS_z 336.88 3.46 17.581 0.011 AB
SDSS_z 323.04 17.3 17.627 0.058 AB
DES_z 360.72 3.65 17.507 0.011 AB
PanSTARRS_y 426.83 9.65 17.324 0.025 AB
2MASS_J 317.7 168.1 16.750 0.574 Vega
2MASS_H 685.03 204.51 15.443 0.324 Vega
2MASS_K 1162.34 284.89 14.399 0.266 Vega
WISE_W1 211.34 13.74 15.389 0.071 Vega
WISE_W2 125.17 19.52 15.317 0.169 Vega
WISE_W3 125.22 105.0 13.482 0.910 Vega
WISE_W4 527.59 546.35 10.474 1.124 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})\, 10.145 10.312 10.402
{\rm log}_{10}({\rm SFR}) -0.793 0.089 0.800
{\rm log}_{10}({\rm sSFR}) -11.113 -10.230 -9.433
{\rm stellar\ age} 4.414 6.375 7.690

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.104 -0.711 -0.485
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.004 0.044 0.342

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.268 0.468 0.777
\delta -0.902 -0.710 -0.457
\tau_1/\tau_2 0.605 0.983 1.393
Q_{PAH} 0.337 1.165 3.096
U_{min} 2.561 7.709 14.677
{\rm log}_{10}(\gamma_e)\, -3.000 -1.804 -0.839

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.355 -3.248 -2.070
{\rm log}_{10}(\tau_{AGN})\, 1.122 1.589 1.941

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.866 -0.662 -0.243
0.03-0.10 Gyr -0.807 0.204 0.958
0.10-0.32 Gyr -0.544 0.366 0.931
0.32-1.04 Gyr -0.732 0.154 0.552
1.04-3.38 Gyr -0.460 0.264 0.576
3.38-10.92 Gyr -0.315 0.403 0.612
10.92-12.13 Gyr -0.527 0.419 1.016