2025yyi

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Information

Transient

Name: AT2025yyi
Right ascension: 9h21m35.63s
Declination: 54d35m02.35s
Discovery Date: Sept. 30, 2025, 11:24 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.021

Host

Name: 2473983
Right ascension: 9h21m35.66s
Declination: 54d35m04.25s
Redshift: None
Photometric Redshift: 0.077
 

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 4.7
Cutout download processed 1.58
Global aperture construction processed 0.64
Local aperture photometry processed 5.07
Global aperture photometry processed 5.45
Validate local photometry processed 0.02
Validate global photometry processed 14.03
Host information processed 0.04
Global host SED inference processed 505.05
Local host SED inference processed 415.81
Transient information processed 0.0
Transient MWEBV processed 0.25
Host MWEBV processed 0.04
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) = 9h21m35.63s, 54d35m02.35s
semi major axis, semi minor axis (arcsec) = 1.38, 1.38
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 21.77 0.39 20.555 0.019 AB
SDSS_r 36.85 1.67 19.984 0.049 AB
PanSTARRS_r 34.68 0.45 20.050 0.014 AB
SDSS_i 53.71 2.13 19.575 0.043 AB
PanSTARRS_i 50.23 0.4 19.648 0.009 AB
PanSTARRS_z 59.88 1.2 19.457 0.022 AB
SDSS_z 68.84 4.05 19.305 0.064 AB
PanSTARRS_y 67.79 2.66 19.322 0.043 AB

Aperture details

RA, DEC (J2000) = 9h21m35.67s, 54d35m04.74s
semi major axis, semi minor axis (arcsec) = 14.53, 7.1
angle (degrees, anti-clockwise from east) = -109.52

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_g 417.64 5.91 17.348 0.015 AB
PanSTARRS_g 454.37 2.78 17.256 0.007 AB
SDSS_r 723.68 8.13 16.751 0.012 AB
PanSTARRS_r 697.49 3.2 16.791 0.005 AB
SDSS_i 998.92 10.94 16.401 0.012 AB
PanSTARRS_i 963.32 2.88 16.441 0.003 AB
PanSTARRS_z 1142.59 8.75 16.255 0.008 AB
SDSS_z 1349.46 27.16 16.075 0.022 AB
PanSTARRS_y 1374.38 19.57 16.055 0.015 AB
2MASS_J 1578.58 198.86 15.009 0.137 Vega
2MASS_H 2286.33 289.13 14.135 0.137 Vega
2MASS_K 2184.23 333.39 13.714 0.166 Vega
WISE_W1 745.99 20.26 14.019 0.029 Vega
WISE_W2 497.81 24.01 13.818 0.052 Vega
WISE_W3 1276.16 99.77 10.961 0.085 Vega
WISE_W4 1183.16 582.34 9.597 0.534 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.996 9.160 9.284
{\rm log}_{10}({\rm SFR}) -1.426 -0.912 -0.358
{\rm log}_{10}({\rm sSFR}) -10.612 -10.077 -9.416
{\rm stellar\ age} 2.469 5.670 7.285

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.361 -0.636 -0.079
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.465 -0.780 -0.048

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.428 0.946 1.382
\delta -0.320 -0.033 0.261
\tau_1/\tau_2 0.654 1.016 1.361
Q_{PAH} 0.972 2.955 5.607
U_{min} 2.781 7.766 14.641
{\rm log}_{10}(\gamma_e)\, -3.068 -1.989 -0.716

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.792 -0.947 -0.261
{\rm log}_{10}(\tau_{AGN})\, 0.951 1.383 1.924

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.519 -0.986 -0.584
0.03-0.10 Gyr -1.637 -0.947 -0.280
0.10-0.33 Gyr -1.446 -0.785 -0.167
0.33-1.07 Gyr -1.310 -0.627 -0.163
1.07-3.51 Gyr -1.452 -0.741 -0.468
3.51-11.47 Gyr -1.833 -0.853 -0.596
11.47-12.75 Gyr -1.905 -0.897 -0.361

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.341 10.425 10.489
{\rm log}_{10}({\rm SFR}) -0.594 0.067 0.763
{\rm log}_{10}({\rm sSFR}) -10.929 -10.383 -9.652
{\rm stellar\ age} 6.405 7.346 8.958

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.686 -0.521 -0.382
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.864 -0.415 0.010

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.108 0.207 0.374
\delta -0.930 -0.728 -0.356
\tau_1/\tau_2 0.668 1.042 1.421
Q_{PAH} 0.341 1.220 3.086
U_{min} 2.684 7.742 14.702
{\rm log}_{10}(\gamma_e)\, -2.668 -1.614 -0.452

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.099 -2.887 -1.826
{\rm log}_{10}(\tau_{AGN})\, 1.181 1.676 1.990

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.777 -0.338 -0.116
0.03-0.10 Gyr -0.678 0.157 0.914
0.10-0.33 Gyr -0.766 0.150 0.623
0.33-1.07 Gyr -0.737 -0.007 0.326
1.07-3.51 Gyr -0.401 0.212 0.512
3.51-11.47 Gyr 0.241 0.557 0.687
11.47-12.75 Gyr 0.114 0.655 1.243