2025ahnh

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Information

Transient

Name: AT2025ahnh
Right ascension: 23h15m50.63s
Declination: 15d11m53.90s
Discovery Date: Dec. 15, 2025, 2:55 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.040

Host

Name: SDSSJ231550.63+15115
Right ascension: 23h15m50.64s
Declination: 15d11m59.14s
Redshift: None
Photometric Redshift: 0.105
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 7.79
Transient MWEBV processed 0.08
Host match processed 4.21
Host information processed 0.05
Host MWEBV processed 0.06
Global aperture construction processed 0.59
Global aperture photometry processed 6.44
Validate global photometry processed 1.65
Global host SED inference processed 401.52
Local aperture photometry processed 5.6
Validate local photometry processed 0.03
Local host SED inference processed 525.19
 

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) = 23h15m50.63s, 15d11m53.90s
semi major axis, semi minor axis (arcsec) = 1.04, 1.04
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_z 4.88 0.59 22.178 0.132 AB
PanSTARRS_y 5.09 1.62 22.133 0.346 AB

Aperture details

RA, DEC (J2000) = 23h15m50.63s, 15d11m59.13s
semi major axis, semi minor axis (arcsec) = 6.82, 5.36
angle (degrees, anti-clockwise from east) = -96.06

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 9.58 0.62 21.446 0.071 AB
GALEX_NUV 12.5 0.4 21.157 0.035 AB
DES_g 177.36 0.75 18.278 0.005 AB
PanSTARRS_g 180.19 1.26 18.261 0.008 AB
PanSTARRS_r 334.68 1.64 17.588 0.005 AB
DES_r 365.3 1.79 17.493 0.005 AB
PanSTARRS_i 474.73 2.04 17.209 0.005 AB
PanSTARRS_z 588.48 3.96 16.976 0.007 AB
DES_z 624.9 6.3 16.910 0.011 AB
PanSTARRS_y 690.53 9.34 16.802 0.015 AB
2MASS_J 980.1 129.88 15.527 0.144 Vega
2MASS_H 737.29 208.49 15.363 0.307 Vega
2MASS_K 1111.36 268.71 14.448 0.263 Vega
WISE_W1 405.93 18.26 14.680 0.049 Vega
WISE_W2 249.92 23.06 14.566 0.100 Vega
WISE_W3 214.24 78.54 12.899 0.398 Vega
WISE_W4 525.18 585.57 10.479 1.211 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})\, 7.762 8.270 8.657
{\rm log}_{10}({\rm SFR}) -1.138 -0.700 -0.224
{\rm log}_{10}({\rm sSFR}) -9.570 -8.927 -8.057
{\rm stellar\ age} 0.418 4.775 7.243

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.653 -1.072 -0.398
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.499 -0.768 0.031

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.951 1.512 2.120
\delta -0.205 0.073 0.295
\tau_1/\tau_2 0.539 0.934 1.354
Q_{PAH} 0.912 2.579 5.074
U_{min} 3.024 8.661 16.416
{\rm log}_{10}(\gamma_e)\, -3.284 -2.151 -0.827

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.128 -0.418 0.239
{\rm log}_{10}(\tau_{AGN})\, 1.082 1.494 1.942

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.890 -0.431 0.132
0.03-0.10 Gyr -2.775 -1.318 -0.573
0.10-0.32 Gyr -3.944 -1.720 -0.955
0.32-1.06 Gyr -4.524 -1.955 -1.289
1.06-3.43 Gyr -4.737 -1.999 -1.334
3.43-11.15 Gyr -4.765 -1.974 -1.274
11.15-12.39 Gyr -4.794 -1.984 -1.022

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.470 10.504 10.576
{\rm log}_{10}({\rm SFR}) -0.386 -0.068 0.295
{\rm log}_{10}({\rm sSFR}) -10.908 -10.563 -10.185
{\rm stellar\ age} 7.116 7.752 9.905

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.785 -0.563 -0.426
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.416 -0.106 0.315

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.112 0.205 0.367
\delta -0.641 -0.319 -0.047
\tau_1/\tau_2 0.667 1.025 1.410
Q_{PAH} 0.785 2.247 4.130
U_{min} 2.740 8.133 15.434
{\rm log}_{10}(\gamma_e)\, -2.043 -1.054 -0.354

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.927 -2.511 -1.627
{\rm log}_{10}(\tau_{AGN})\, 1.133 1.591 1.950

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.895 -0.432 -0.198
0.03-0.10 Gyr -0.367 0.024 0.441
0.10-0.32 Gyr -0.500 -0.039 0.281
0.32-1.06 Gyr -0.608 -0.137 0.148
1.06-3.43 Gyr -0.688 0.015 0.354
3.43-11.15 Gyr 0.383 0.690 0.782
11.15-12.39 Gyr 0.439 0.933 1.530