2025alhg

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Information

Transient

Name: AT2025alhg
Right ascension: 23h02m48.86s
Declination: 16d22m43.39s
Discovery Date: Aug. 23, 2025, 9 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.085

Host

Name:
Right ascension: 23h02m48.94s
Declination: 16d22m43.08s
Redshift: None
Photometric Redshift: 0.163
 

Processing Status: blocked

Task Name Status Time taken (s) Warning Flag
Cutout download processed 25.4
Transient MWEBV processed 0.49
Host match processed 8.18
Host information processed 0.2
Host MWEBV processed 0.07
Global aperture construction processed 3.82
Global aperture photometry processed 5.29
Validate global photometry processed 15.21
Global host SED inference processed 423.81
Local aperture photometry processed 8.47
Validate local photometry no valid phot 0.03
Local host SED inference not 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) = 23h02m48.86s, 16d22m43.39s
semi major axis, semi minor axis (arcsec) = 0.71, 0.71
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) = 23h02m48.95s, 16d22m43.37s
semi major axis, semi minor axis (arcsec) = 6.47, 4.99
angle (degrees, anti-clockwise from east) = -101.49

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 6.72 5.23 21.831 0.845 AB
SDSS_g 28.59 2.17 20.260 0.082 AB
DES_g 28.9 0.43 20.248 0.016 AB
PanSTARRS_g 27.37 1.48 20.307 0.059 AB
SDSS_r 49.47 3.4 19.664 0.075 AB
PanSTARRS_r 45.1 1.57 19.764 0.038 AB
DES_r 50.9 0.84 19.633 0.018 AB
SDSS_i 70.88 5.46 19.274 0.084 AB
PanSTARRS_i 69.77 2.1 19.291 0.033 AB
PanSTARRS_z 94.86 4.38 18.957 0.050 AB
SDSS_z 26.64 19.09 20.336 0.778 AB
DES_z 94.43 2.31 18.962 0.027 AB
2MASS_J -63.22 133.05 Vega
2MASS_H 94.14 166.16 17.598 1.916 Vega
2MASS_K -63.79 261.2 Vega
WISE_W1 42.38 13.56 17.133 0.347 Vega
WISE_W2 10.22 18.78 18.038 1.995 Vega
WISE_W3 99.93 65.32 13.727 0.710 Vega
WISE_W4 383.17 461.01 10.822 1.306 Vega
 

Imaging data

Click the image to load the interactive plot.


 

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})\, 9.545 9.815 9.980
{\rm log}_{10}({\rm SFR}) -0.433 0.445 1.038
{\rm log}_{10}({\rm sSFR}) -10.345 -9.398 -8.531
{\rm stellar\ age} 1.434 4.494 6.437

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.337 -0.503 -0.181
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.977 0.086 0.366

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.365 0.608 0.860
\delta -0.741 -0.470 -0.193
\tau_1/\tau_2 0.542 0.917 1.334
Q_{PAH} 0.533 1.593 3.500
U_{min} 3.043 8.735 16.753
{\rm log}_{10}(\gamma_e)\, -2.913 -1.812 -0.686

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.548 -2.009 -1.057
{\rm log}_{10}(\tau_{AGN})\, 1.110 1.504 1.863

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.502 -0.492 -0.089
0.03-0.10 Gyr -0.417 0.588 1.198
0.10-0.32 Gyr -1.122 0.438 0.894
0.32-1.03 Gyr -1.762 0.009 0.509
1.03-3.29 Gyr -2.187 -0.225 0.178
3.29-10.54 Gyr -2.034 -0.333 0.063
10.54-11.71 Gyr -2.029 -0.328 0.400