2025ahvb

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Information

Transient

Name: AT2025ahvb
Right ascension: 2h20m14.60s
Declination: -21d34m14.98s
Discovery Date: Dec. 16, 2025, 4:02 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.020

Host

Name:
Right ascension: 2h20m14.55s
Declination: -21d34m13.18s
Redshift: None
Photometric Redshift: 0.057
 

Processing Status: blocked

Task Name Status Time taken (s) Warning Flag
Cutout download processed 6.33
Transient MWEBV processed 0.04
Host match processed 5.87
Host information processed 0.14
Host MWEBV processed 0.04
Global aperture construction processed 0.63
Global aperture photometry processed 2.12
Validate global photometry processed 2.35
Global host SED inference processed 431.56
Local aperture photometry processed 5.15
Validate local photometry processed 0.04
Local host SED inference processed 561.02
 

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) = 2h20m14.60s, -21d34m14.98s
semi major axis, semi minor axis (arcsec) = 1.82, 1.82
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 175.73 0.4 18.288 0.002 AB
PanSTARRS_g 140.24 0.53 18.533 0.004 AB
PanSTARRS_r 257.4 0.67 17.873 0.003 AB
PanSTARRS_i 389.98 0.6 17.422 0.002 AB
PanSTARRS_z 493.57 1.46 17.167 0.003 AB
DES_z 706.75 2.94 16.777 0.005 AB
PanSTARRS_y 561.22 3.54 17.027 0.007 AB

Aperture details

RA, DEC (J2000) = 2h20m14.53s, -21d34m12.82s
semi major axis, semi minor axis (arcsec) = 11.22, 5.81
angle (degrees, anti-clockwise from east) = -24.15

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 35.06 4.1 20.038 0.127 AB
GALEX_NUV 41.98 2.71 19.842 0.070 AB
DES_g 699.96 1.16 16.787 0.002 AB
PanSTARRS_g 622.4 3.8 16.915 0.007 AB
PanSTARRS_r 1228.63 5.29 16.176 0.005 AB
PanSTARRS_i 1904.14 3.38 15.701 0.002 AB
PanSTARRS_z 2320.02 8.41 15.486 0.004 AB
DES_z 2649.99 6.36 15.342 0.003 AB
PanSTARRS_y 2448.63 23.12 15.428 0.010 AB
2MASS_J 3996.18 196.57 14.001 0.053 Vega
2MASS_H 4903.16 296.11 13.306 0.066 Vega
2MASS_K 4625.58 365.93 12.899 0.086 Vega
WISE_W1 1845.94 102.69 13.035 0.060 Vega
WISE_W2 1156.58 50.61 12.903 0.048 Vega
WISE_W3 1341.78 118.85 10.907 0.096 Vega
WISE_W4 104.37 366.15 12.234 3.809 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.650 9.957 10.075
{\rm log}_{10}({\rm SFR}) -0.568 0.156 0.755
{\rm log}_{10}({\rm sSFR}) -10.521 -9.855 -9.035
{\rm stellar\ age} 1.402 6.433 8.740

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.504 -0.121 0.081
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.471 -0.864 -0.481

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.517 1.247 1.781
\delta -0.280 0.069 0.274
\tau_1/\tau_2 0.609 1.073 1.502
Q_{PAH} 0.511 2.123 4.926
U_{min} 2.874 8.418 15.740
{\rm log}_{10}(\gamma_e)\, -3.276 -2.068 -1.082

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.221 -2.631 -0.612
{\rm log}_{10}(\tau_{AGN})\, 0.993 1.531 1.994

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.701 -0.044 0.431
0.03-0.10 Gyr -0.774 0.181 0.849
0.10-0.33 Gyr -0.894 0.054 0.798
0.33-1.08 Gyr -1.299 -0.282 0.404
1.08-3.56 Gyr -1.933 -0.381 0.134
3.56-11.70 Gyr -2.163 -0.151 0.192
11.70-13.00 Gyr -1.942 -0.061 0.688

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.652 10.728 10.782
{\rm log}_{10}({\rm SFR}) -0.533 -0.119 0.268
{\rm log}_{10}({\rm sSFR}) -11.291 -10.843 -10.421
{\rm stellar\ age} 8.690 11.833 12.301

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.675 -0.475 -0.316
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.835 -1.286 0.065

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.194 0.311 0.472
\delta -0.155 0.066 0.221
\tau_1/\tau_2 0.500 0.972 1.433
Q_{PAH} 0.473 1.338 2.776
U_{min} 2.080 6.325 13.940
{\rm log}_{10}(\gamma_e)\, -3.410 -2.727 -1.619

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.953 -2.767 -1.987
{\rm log}_{10}(\tau_{AGN})\, 1.061 1.498 1.889

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.626 -0.538 -0.185
0.03-0.10 Gyr -0.710 -0.034 0.404
0.10-0.33 Gyr -2.892 -0.751 -0.083
0.33-1.08 Gyr -4.447 -1.386 -0.514
1.08-3.56 Gyr -3.758 -1.479 -0.467
3.56-11.70 Gyr -1.552 -0.012 0.849
11.70-13.00 Gyr 1.160 1.828 1.907