2025altu results

Information

Transient
Name:AT2025altu
Right ascension: 11h18m07.38s
Declination:7d28m17.50s
Discovery Date:Dec. 24, 2025, 1:58 p.m.
Classification:None
Redshift:None
MW E(B-V):0.040
Host
Name:
Right ascension: 11h18m07.59s
Declination:7d28m21.67s
Redshift:0.036791
Photometric Redshift:None
 

Cutout Download Report

Downloaded Unavailable
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_z
 DES_i
DES_Y
 

Processing Status: completed

Task Name Status Time (s)
Cutout download processed 19.54
Transient MWEBV processed 0.14
Host match processed 6.28
Host information processed 0.05
Host MWEBV processed 0.05
Global aperture construction processed 0.64
Global aperture photometry processed 6.36
Validate global photometry processed 19.1
Global host SED inference processed 436.75
Local aperture photometry processed 6.22
Validate local photometry processed 0.03
Local host SED inference processed 410.25
 

Imaging data


 

Spectral Energy Distribution



 

Aperture Photometry


Aperture details

RA, DEC (J2000):11h18m07.38s, 7d28m17.50s
semi major axis, semi minor axis (arcsec):2.74, 2.74
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 7.33 2.4 21.737 0.355 AB
SDSS_g 26.17 1.55 20.356 0.064 AB
DES_g 30.24 0.31 20.199 0.011 AB
PanSTARRS_g 26.88 0.64 20.326 0.026 AB
SDSS_r 40.81 2.05 19.873 0.055 AB
PanSTARRS_r 36.25 0.87 20.002 0.026 AB
DES_r 43.83 0.62 19.796 0.015 AB
SDSS_i 48.57 2.66 19.684 0.059 AB
PanSTARRS_i 47.14 0.78 19.717 0.018 AB
PanSTARRS_z 51.01 1.52 19.631 0.032 AB
SDSS_z 63.6 8.76 19.391 0.150 AB
DES_z 55.81 1.27 19.533 0.025 AB
PanSTARRS_y 63.36 5.15 19.395 0.088 AB

Aperture details

RA, DEC (J2000):11h18m07.60s, 7d28m22.03s
semi major axis, semi minor axis (arcsec):11.92, 6.37
angle (degrees, anti-clockwise from east):-155.08
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 32.65 1.58 20.115 0.052 AB
GALEX_NUV 40.74 1.17 19.875 0.031 AB
SDSS_u 71.88 7.68 19.258 0.116 AB
SDSS_g 220.06 4.67 18.044 0.023 AB
DES_g 205.65 0.88 18.117 0.005 AB
PanSTARRS_g 229.1 2.04 18.000 0.010 AB
SDSS_r 310.54 6.05 17.670 0.021 AB
PanSTARRS_r 307.88 2.73 17.679 0.010 AB
DES_r 318.83 1.8 17.641 0.006 AB
SDSS_i 393.41 8.17 17.413 0.023 AB
PanSTARRS_i 396.65 2.44 17.404 0.007 AB
PanSTARRS_z 438.54 4.82 17.295 0.012 AB
SDSS_z 550.18 27.83 17.049 0.055 AB
DES_z 442.78 3.73 17.285 0.009 AB
PanSTARRS_y 440.94 16.29 17.289 0.040 AB
2MASS_J 821.2 238.03 15.719 0.315 Vega
2MASS_H 1090.83 318.74 14.938 0.317 Vega
2MASS_K 83.34 443.01 17.260 5.771 Vega
WISE_W1 193.95 13.57 15.482 0.076 Vega
WISE_W2 109.61 18.94 15.461 0.188 Vega
WISE_W3 129.33 176.82 13.447 1.484 Vega
WISE_W4 682.37 945.5 10.195 1.504 Vega
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 7.951 8.244 8.413
{\rm log}_{10}({\rm SFR}) -1.912 -1.336 -0.715
{\rm log}_{10}({\rm sSFR}) -10.228 -9.594 -8.724
{\rm stellar\ age} 1.363 5.288 7.172

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.484 -0.980 -0.386
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.420 -0.851 -0.126

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.224 0.544 0.900
\delta -0.589 -0.171 0.129
\tau_1/\tau_2 0.661 1.002 1.355
Q_{PAH} 0.770 2.531 5.206
U_{min} 2.863 7.905 15.422
{\rm log}_{10}(\gamma_e)\, -3.108 -1.979 -0.943

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.672 -0.760 -0.109
{\rm log}_{10}(\tau_{AGN})\, 1.071 1.549 1.971

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.970 -1.547 -1.223
0.03-0.10 Gyr -2.065 -1.288 -0.586
0.10-0.33 Gyr -2.107 -1.348 -0.869
0.33-1.09 Gyr -2.371 -1.561 -1.128
1.09-3.61 Gyr -2.973 -1.716 -1.406
3.61-11.94 Gyr -3.553 -1.861 -1.486
11.94-13.26 Gyr -3.526 -1.922 -1.334

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.351 9.435 9.535
{\rm log}_{10}({\rm SFR}) -0.674 -0.329 -0.018
{\rm log}_{10}({\rm sSFR}) -10.162 -9.750 -9.422
{\rm stellar\ age} 7.441 8.921 12.129

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.779 -1.527 -1.257
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.658 -0.838 0.113

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.132 0.231 0.361
\delta -0.396 -0.060 0.202
\tau_1/\tau_2 0.555 1.050 1.532
Q_{PAH} 0.575 1.838 4.059
U_{min} 3.425 9.958 17.914
{\rm log}_{10}(\gamma_e)\, -2.526 -1.390 -0.529

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.861 -2.654 -1.820
{\rm log}_{10}(\tau_{AGN})\, 1.202 1.697 1.979

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -4.485 -3.316 -2.072
0.03-0.10 Gyr -0.514 -0.166 0.146
0.10-0.33 Gyr -3.097 -1.172 -0.441
0.33-1.09 Gyr -3.976 -1.660 -0.878
1.09-3.61 Gyr -4.027 -1.683 -0.818
3.61-11.94 Gyr -2.071 -0.584 -0.351
11.94-13.26 Gyr -1.149 0.073 0.639