2025ahan

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Information

Transient

Name: AT2025ahan
Right ascension: 12h23m47.72s
Declination: 3d15m03.76s
Discovery Date: Dec. 15, 2025, 11:49 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.014

Host

Name:
Right ascension: 12h23m47.66s
Declination: 3d15m02.46s
Redshift: None
Photometric Redshift: 0.043
 

Processing Status: blocked

Task Name Status Time taken (s) Warning Flag
Cutout download processed 17.81
Transient MWEBV processed 0.07
Host match processed 6.03
Host information processed 0.21
Host MWEBV processed 0.05
Global aperture construction processed 2.86
Global aperture photometry processed 4.89
Validate global photometry processed 13.55
Global host SED inference processed 1019.39
Local aperture photometry processed 5.28
Validate local photometry processed 0.02
Local host SED inference processed 455.76
 

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) = 12h23m47.72s, 3d15m03.76s
semi major axis, semi minor axis (arcsec) = 2.37, 2.37
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 8.29 2.12 21.603 0.278 AB
SDSS_g 20.28 1.4 20.632 0.075 AB
PanSTARRS_g 20.96 0.61 20.597 0.032 AB
SDSS_r 23.62 1.72 20.467 0.079 AB
PanSTARRS_r 26.97 0.7 20.323 0.028 AB
SDSS_i 32.4 2.63 20.124 0.088 AB
PanSTARRS_i 25.99 0.66 20.363 0.028 AB
PanSTARRS_z 28.37 1.44 20.268 0.055 AB
SDSS_z 39.9 8.18 19.898 0.222 AB
PanSTARRS_y 22.86 3.19 20.502 0.152 AB

Aperture details

RA, DEC (J2000) = 12h23m47.66s, 3d15m02.56s
semi major axis, semi minor axis (arcsec) = 7.01, 5.72
angle (degrees, anti-clockwise from east) = -28.78

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 11.67 3.35 21.232 0.312 AB
GALEX_NUV 19.23 0.8 20.690 0.045 AB
SDSS_u 6.7 5.51 21.835 0.894 AB
SDSS_g 57.44 2.96 19.502 0.056 AB
PanSTARRS_g 52.91 1.62 19.591 0.033 AB
SDSS_r 57.01 3.84 19.510 0.073 AB
PanSTARRS_r 77.05 1.86 19.183 0.026 AB
SDSS_i 99.08 6.51 18.910 0.071 AB
PanSTARRS_i 69.63 1.75 19.293 0.027 AB
PanSTARRS_z 66.03 3.79 19.351 0.062 AB
SDSS_z 130.73 21.73 18.609 0.180 AB
PanSTARRS_y 30.66 8.45 20.183 0.299 AB
WISE_W1 21.36 9.9 17.877 0.503 Vega
WISE_W2 -9.98 18.55 Vega
WISE_W3 9.47 109.43 16.285 12.541 Vega
WISE_W4 307.31 498.52 11.061 1.761 Vega
 

Imaging data

Click the image to load the interactive plot.


 

Spectral Energy Distribution

 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 7.689 7.959 8.138
{\rm log}_{10}({\rm SFR}) -1.956 -1.518 -0.905
{\rm log}_{10}({\rm sSFR}) -10.007 -9.455 -8.654
{\rm stellar\ age} 1.430 4.669 6.579

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.539 -1.042 -0.494
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.846 -1.573 -0.908

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.102 0.243 0.522
\delta -0.762 -0.361 0.013
\tau_1/\tau_2 0.791 1.163 1.534
Q_{PAH} 1.105 2.904 5.343
U_{min} 2.878 8.011 15.167
{\rm log}_{10}(\gamma_e)\, -3.002 -1.876 -0.768

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.494 -0.397 0.058
{\rm log}_{10}(\tau_{AGN})\, 1.123 1.539 1.912

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.047 -1.608 -1.282
0.03-0.10 Gyr -2.074 -1.487 -0.790
0.10-0.33 Gyr -2.065 -1.479 -1.041
0.33-1.09 Gyr -2.437 -1.663 -1.328
1.09-3.59 Gyr -3.106 -1.970 -1.643
3.59-11.86 Gyr -3.555 -2.192 -1.791
11.86-13.18 Gyr -3.612 -2.266 -1.692

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.314 8.497 8.652
{\rm log}_{10}({\rm SFR}) -1.488 -0.953 -0.254
{\rm log}_{10}({\rm sSFR}) -9.987 -9.434 -8.624
{\rm stellar\ age} 0.915 5.121 7.252

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.889 -1.666 -1.292
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.938 -1.794 -1.515

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.082 0.392 0.837
\delta -0.395 0.040 0.286
\tau_1/\tau_2 0.415 0.803 1.227
Q_{PAH} 2.280 4.638 6.210
U_{min} 3.987 9.772 17.039
{\rm log}_{10}(\gamma_e)\, -3.075 -1.883 -0.572

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.525 -1.391 -0.374
{\rm log}_{10}(\tau_{AGN})\, 0.979 1.537 1.954

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.662 -1.443 -0.966
0.03-0.10 Gyr -1.544 -0.865 -0.108
0.10-0.33 Gyr -1.501 -0.870 -0.246
0.33-1.09 Gyr -2.198 -1.295 -0.877
1.09-3.59 Gyr -3.164 -1.549 -1.225
3.59-11.86 Gyr -3.801 -1.666 -1.280
11.86-13.18 Gyr -3.783 -1.573 -0.953