2025aaan

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Information

Transient

Name: AT2025aaan
Right ascension: 2h31m18.37s
Declination: -20d28m13.95s
Discovery Date: Oct. 7, 2025, 10:02 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.020

Host

Name: ESO545-027
Right ascension: 2h31m18.57s
Declination: -20d28m06.96s
Redshift: 0.032920
Photometric Redshift:
 

Processing Status

Cutout download
 Cutout download
processed
 status
Transient information
Transient information
processed
 status
Transient MWEBV
Transient MWEBV
processed
 status
Host match
 Host match
processed
 status
Host information
Host information
processed
 status
Local aperture photometry
 Local aperture photometry
processed
 status
Validate local photometry
 Validate local photometry
processed
 status
Local host SED inference
Local host SED inference
processed
 status
Host MWEBV
Host MWEBV
processed
 status
Global host SED inference
Global host SED inference
processed
 status
Validate global photometry
Validate global photometr...
processed
 status
Global aperture construction
 Global aperture construct...
processed
 status
Global aperture photometry
 Global aperture photometr...
processed
 status
Task Name Status Time taken (s) Warning Flag
Host match processed 4.61
Cutout download processed 3.98
Global aperture construction processed 0.66
Local aperture photometry processed 4.17
Global aperture photometry processed 4.3
Validate local photometry processed 0.02
Validate global photometry processed 8.66
Host information processed 0.12
Global host SED inference processed 582.43
Local host SED inference processed 436.86
Transient information processed 0.0
Transient MWEBV processed 0.11
Host MWEBV processed 0.1
Processing status completed N/A N/A
 

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) = 2h31m18.37s, -20d28m13.95s
semi major axis, semi minor axis (arcsec) = 3.05, 3.05
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 121.98 0.88 18.684 0.008 AB
PanSTARRS_r 205.82 0.99 18.116 0.005 AB
DES_r 220.91 0.6 18.039 0.003 AB
PanSTARRS_i 276.0 0.89 17.798 0.003 AB
PanSTARRS_z 335.14 2.41 17.587 0.008 AB
PanSTARRS_y 410.49 5.51 17.367 0.015 AB
2MASS_J 478.99 77.54 16.304 0.176 Vega
2MASS_H 280.47 130.37 16.413 0.505 Vega
2MASS_K 447.21 135.63 15.436 0.329 Vega

Aperture details

RA, DEC (J2000) = 2h31m18.53s, -20d28m06.53s
semi major axis, semi minor axis (arcsec) = 27.72, 11.0
angle (degrees, anti-clockwise from east) = 0.26

Warning: possible contaminating objects in the global aperture
Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 2166.74 4.99 15.560 0.002 AB
PanSTARRS_r 3635.13 5.54 14.999 0.002 AB
DES_r 4059.91 2.68 14.879 0.001 AB
PanSTARRS_i 4861.99 5.01 14.683 0.001 AB
PanSTARRS_z 5961.83 13.48 14.462 0.002 AB
PanSTARRS_y 7102.39 31.42 14.271 0.005 AB
2MASS_J 8096.34 450.47 13.234 0.060 Vega
2MASS_H 7540.43 758.15 12.839 0.109 Vega
2MASS_K 7515.79 789.31 12.372 0.114 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
Warning: possible contaminating objects in the global aperture
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.999 9.169 9.306
{\rm log}_{10}({\rm SFR}) -1.389 -0.869 -0.408
{\rm log}_{10}({\rm sSFR}) -10.615 -10.074 -9.522
{\rm stellar\ age} 3.910 6.715 8.366

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.337 -0.662 -0.309
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.655 -0.567 0.199

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.395 0.880 1.189
\delta -0.530 -0.190 0.132
\tau_1/\tau_2 0.707 1.034 1.378
Q_{PAH} 0.491 1.761 4.078
U_{min} 2.721 7.950 14.801
{\rm log}_{10}(\gamma_e)\, -3.394 -1.918 -1.084

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.131 -2.596 -0.826
{\rm log}_{10}(\tau_{AGN})\, 0.943 1.313 1.829

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.378 -0.910 -0.600
0.03-0.10 Gyr -1.517 -0.876 -0.323
0.10-0.33 Gyr -1.481 -0.840 -0.343
0.33-1.09 Gyr -1.510 -0.830 -0.360
1.09-3.62 Gyr -1.428 -0.838 -0.554
3.62-11.98 Gyr -1.406 -0.813 -0.561
11.98-13.32 Gyr -1.543 -0.781 -0.206

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.255 10.418 10.549
{\rm log}_{10}({\rm SFR}) -0.411 0.100 0.666
{\rm log}_{10}({\rm sSFR}) -10.857 -10.340 -9.730
{\rm stellar\ age} 3.109 6.848 8.683

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.085 -0.592 -0.349
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.805 -1.261 0.173

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.367 0.755 1.124
\delta -0.495 -0.109 0.248
\tau_1/\tau_2 0.373 0.772 1.207
Q_{PAH} 0.358 1.672 3.127
U_{min} 2.832 7.785 15.055
{\rm log}_{10}(\gamma_e)\, -3.438 -2.404 -1.052

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.602 -3.698 -1.642
{\rm log}_{10}(\tau_{AGN})\, 0.961 1.509 1.890

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.219 0.178 0.512
0.03-0.10 Gyr -0.887 0.065 0.730
0.10-0.33 Gyr -0.978 0.110 0.816
0.33-1.09 Gyr -0.796 0.197 0.797
1.09-3.62 Gyr -0.375 0.428 0.838
3.62-11.98 Gyr -0.768 0.426 0.686
11.98-13.32 Gyr -0.888 0.434 1.138