2025xtd

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Information

Transient

Name: AT2025xtd
Right ascension: 17h37m50.42s
Declination: 58d36m45.17s
Discovery Date: Sept. 14, 2025, 3:50 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.035

Host

Name: 3136524
Right ascension: 17h37m50.16s
Declination: 58d36m42.88s
Redshift: 0.133814
Photometric Redshift: 0.132
 

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 4.02
Cutout download processed 18.0
Global aperture construction processed 0.62
Local aperture photometry processed 5.09
Global aperture photometry processed 4.83
Validate local photometry no valid phot 0.02
Validate global photometry processed 14.7
Host information processed 0.11
Global host SED inference processed 489.18
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.05
Host MWEBV processed 0.04
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) = 17h37m50.42s, 58d36m45.17s
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

Data not available


Aperture details

RA, DEC (J2000) = 17h37m50.15s, 58d36m43.43s
semi major axis, semi minor axis (arcsec) = 8.22, 6.42
angle (degrees, anti-clockwise from east) = -174.47

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 38.41 6.08 19.939 0.172 AB
GALEX_NUV 53.36 1.19 19.582 0.024 AB
SDSS_u 143.67 5.45 18.507 0.041 AB
SDSS_g 308.2 5.22 17.678 0.018 AB
PanSTARRS_g 334.79 1.64 17.588 0.005 AB
SDSS_r 463.91 6.39 17.234 0.015 AB
PanSTARRS_r 490.84 1.99 17.173 0.004 AB
SDSS_i 630.3 8.01 16.901 0.014 AB
PanSTARRS_i 631.65 2.52 16.899 0.004 AB
PanSTARRS_z 693.72 5.73 16.797 0.009 AB
SDSS_z 612.87 20.03 16.932 0.035 AB
PanSTARRS_y 832.36 13.85 16.599 0.018 AB
2MASS_J 621.44 185.28 16.022 0.324 Vega
2MASS_H 1438.93 291.9 14.637 0.220 Vega
2MASS_K 1317.7 293.18 14.263 0.242 Vega
WISE_W1 459.67 11.16 14.545 0.026 Vega
WISE_W2 355.62 13.41 14.184 0.041 Vega
WISE_W3 1524.49 59.06 10.768 0.042 Vega
WISE_W4 2024.32 390.98 9.014 0.210 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Data not available


Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.326 10.430 10.500
{\rm log}_{10}({\rm SFR}) 1.035 1.268 1.482
{\rm log}_{10}({\rm sSFR}) -9.415 -9.170 -8.895
{\rm stellar\ age} 4.480 5.698 6.698

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.508 -0.257 -0.127
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.800 0.144 0.343

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.140 0.189 0.301
\delta -0.933 -0.778 -0.505
\tau_1/\tau_2 0.788 1.158 1.555
Q_{PAH} 0.340 1.051 2.301
U_{min} 2.250 6.926 13.417
{\rm log}_{10}(\gamma_e)\, -3.268 -2.140 -1.332

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.954 -2.733 -1.798
{\rm log}_{10}(\tau_{AGN})\, 1.081 1.513 1.903

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.339 0.548 0.730
0.03-0.10 Gyr 1.161 1.407 1.629
0.10-0.32 Gyr 0.525 1.005 1.252
0.32-1.04 Gyr -0.067 0.470 0.762
1.04-3.36 Gyr 0.128 0.456 0.685
3.36-10.84 Gyr 0.191 0.472 0.635
10.84-12.05 Gyr 0.027 0.533 0.981