2025ahhj

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Information

Transient

Name: AT2025ahhj
Right ascension: 8h22m31.24s
Declination: 1d06m47.79s
Discovery Date: Dec. 14, 2025, 2:46 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.034

Host

Name:
Right ascension: 8h22m31.16s
Declination: 1d06m48.49s
Redshift: None
Photometric Redshift: 0.087
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 19.54
Transient MWEBV processed 0.05
Host match processed 5.74
Host information processed 0.11
Host MWEBV processed 0.14
Global aperture construction processed 0.66
Global aperture photometry processed 6.86
Validate global photometry processed 19.87
Global host SED inference processed 444.42
Local aperture photometry processed 7.01
Validate local photometry processed 0.03
Local host SED inference processed 469.29
 

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) = 8h22m31.24s, 1d06m47.79s
semi major axis, semi minor axis (arcsec) = 1.22, 1.22
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 20.64 0.24 20.613 0.013 AB
PanSTARRS_r 38.33 0.34 19.941 0.010 AB
DES_r 48.3 0.34 19.690 0.008 AB
PanSTARRS_i 53.7 0.41 19.575 0.008 AB
PanSTARRS_z 67.47 0.91 19.327 0.015 AB
DES_z 87.73 1.79 19.042 0.022 AB
PanSTARRS_y 74.74 2.15 19.216 0.031 AB

Aperture details

RA, DEC (J2000) = 8h22m31.15s, 1d06m48.74s
semi major axis, semi minor axis (arcsec) = 6.26, 4.4
angle (degrees, anti-clockwise from east) = -18.44

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 2.01 1.14 23.141 0.613 AB
GALEX_NUV 47.05 3.31 19.719 0.076 AB
SDSS_u 63.33 4.03 19.396 0.069 AB
PanSTARRS_z 500.08 3.83 17.152 0.008 AB
SDSS_z 497.89 17.23 17.157 0.038 AB
PanSTARRS_y 593.85 9.12 16.966 0.017 AB
2MASS_J 752.74 164.76 15.813 0.238 Vega
2MASS_K 1263.45 282.4 14.308 0.243 Vega
WISE_W1 695.62 16.04 14.095 0.025 Vega
WISE_W2 402.49 21.69 14.049 0.058 Vega
WISE_W3 74.11 80.74 14.051 1.183 Vega
WISE_W4 -258.47 401.76 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})\, 9.314 9.404 9.487
{\rm log}_{10}({\rm SFR}) -1.904 -1.225 -0.541
{\rm log}_{10}({\rm sSFR}) -11.326 -10.665 -9.932
{\rm stellar\ age} 5.157 6.752 8.027

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.912 -0.336 -0.014
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.641 -0.641 0.241

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.177 0.479 0.935
\delta -0.586 -0.196 0.109
\tau_1/\tau_2 0.705 1.037 1.382
Q_{PAH} 1.557 3.800 5.852
U_{min} 3.119 8.142 15.049
{\rm log}_{10}(\gamma_e)\, -2.852 -1.674 -0.570

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.977 -0.525 -0.015
{\rm log}_{10}(\tau_{AGN})\, 1.093 1.607 1.984

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.135 -1.409 -0.870
0.03-0.10 Gyr -1.992 -1.210 -0.448
0.10-0.33 Gyr -1.696 -1.020 -0.451
0.33-1.07 Gyr -1.460 -0.855 -0.358
1.07-3.48 Gyr -1.087 -0.552 -0.312
3.48-11.35 Gyr -0.866 -0.489 -0.330
11.35-12.61 Gyr -1.082 -0.476 0.060

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.035 10.193 10.335
{\rm log}_{10}({\rm SFR}) 0.416 0.666 0.906
{\rm log}_{10}({\rm sSFR}) -9.797 -9.531 -9.205
{\rm stellar\ age} 4.465 6.359 7.896

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.903 -0.448 -0.132
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.312 -0.418 0.206

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.564 0.762 0.995
\delta 0.190 0.305 0.370
\tau_1/\tau_2 0.774 1.109 1.460
Q_{PAH} 1.082 2.640 4.571
U_{min} 2.608 7.362 14.430
{\rm log}_{10}(\gamma_e)\, -3.256 -2.301 -1.300

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.439 -3.597 -2.582
{\rm log}_{10}(\tau_{AGN})\, 0.978 1.474 1.922

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.336 0.544 0.777
0.03-0.10 Gyr 0.305 0.700 0.992
0.10-0.33 Gyr -0.088 0.471 0.872
0.33-1.07 Gyr -0.343 0.182 0.540
1.07-3.48 Gyr -0.316 0.165 0.415
3.48-11.35 Gyr -0.205 0.238 0.464
11.35-12.61 Gyr -0.405 0.310 0.889