2025yyj

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Information

Transient

Name: SN2025yyj
Right ascension: 8h27m51.28s
Declination: 56d04m17.99s
Discovery Date: Sept. 30, 2025, 10:47 a.m.
Classification: SN Ia
Redshift: 0.041000
MW E(B-V): 0.041

Host

Name: 2524523
Right ascension: 8h27m51.84s
Declination: 56d04m15.20s
Redshift: None
Photometric Redshift: 0.045
 

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 4.14
Cutout download processed 16.24
Global aperture construction processed 0.66
Local aperture photometry processed 5.16
Global aperture photometry processed 5.39
Validate local photometry processed 0.02
Validate global photometry processed 14.9
Host information processed 0.05
Global host SED inference processed 376.22
Local host SED inference processed 419.91
Transient information processed 0.0
Transient MWEBV processed 0.07
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) = 8h27m51.28s, 56d04m17.99s
semi major axis, semi minor axis (arcsec) = 2.47, 2.47
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 11.05 2.21 21.292 0.217 AB
SDSS_g 47.79 1.91 19.702 0.043 AB
PanSTARRS_g 51.88 0.67 19.613 0.014 AB
SDSS_r 80.73 2.66 19.132 0.036 AB
PanSTARRS_r 84.87 0.76 19.078 0.010 AB
SDSS_i 112.7 3.37 18.770 0.032 AB
PanSTARRS_i 113.13 0.72 18.766 0.007 AB
PanSTARRS_z 129.55 1.7 18.619 0.014 AB
SDSS_z 149.45 10.28 18.464 0.075 AB
PanSTARRS_y 161.9 4.45 18.377 0.030 AB

Aperture details

RA, DEC (J2000) = 8h27m51.83s, 56d04m15.71s
semi major axis, semi minor axis (arcsec) = 21.59, 6.08
angle (degrees, anti-clockwise from east) = -41.63

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 37.87 4.37 19.954 0.125 AB
GALEX_NUV 42.81 1.17 19.821 0.030 AB
SDSS_u 129.01 10.02 18.623 0.084 AB
SDSS_g 498.29 6.6 17.156 0.014 AB
PanSTARRS_i 1248.17 3.31 16.159 0.003 AB
SDSS_z 1549.99 46.81 15.924 0.033 AB
PanSTARRS_y 1890.04 20.56 15.709 0.012 AB
2MASS_J 2569.19 267.97 14.481 0.113 Vega
2MASS_H 2328.62 408.87 14.115 0.191 Vega
2MASS_K 2205.9 484.63 13.703 0.239 Vega
WISE_W1 1083.98 24.86 13.613 0.025 Vega
WISE_W2 661.46 28.91 13.510 0.047 Vega
WISE_W3 1934.25 113.3 10.510 0.064 Vega
WISE_W4 3045.38 808.36 8.571 0.288 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})\, 8.755 8.926 9.067
{\rm log}_{10}({\rm SFR}) -1.718 -1.161 -0.609
{\rm log}_{10}({\rm sSFR}) -10.696 -10.103 -9.453
{\rm stellar\ age} 3.899 6.635 8.262

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.457 -0.871 -0.338
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.072 -0.176 0.164

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.297 0.684 1.044
\delta -0.574 -0.223 0.104
\tau_1/\tau_2 0.713 1.075 1.433
Q_{PAH} 0.606 2.010 4.858
U_{min} 2.773 7.681 14.182
{\rm log}_{10}(\gamma_e)\, -3.194 -2.266 -1.197

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.429 -1.320 -0.488
{\rm log}_{10}(\tau_{AGN})\, 0.980 1.409 1.849

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.697 -1.227 -0.857
0.03-0.10 Gyr -1.941 -1.157 -0.521
0.10-0.33 Gyr -1.852 -1.076 -0.527
0.33-1.09 Gyr -1.861 -1.105 -0.622
1.09-3.60 Gyr -1.772 -1.090 -0.795
3.60-11.89 Gyr -1.665 -1.048 -0.801
11.89-13.21 Gyr -1.812 -1.037 -0.432

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.070 10.124 10.206
{\rm log}_{10}({\rm SFR}) -0.843 -0.572 -0.325
{\rm log}_{10}({\rm sSFR}) -10.981 -10.695 -10.463
{\rm stellar\ age} 7.733 8.657 11.484

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.724 -0.527 -0.362
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.460 -0.200 0.022

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.137 0.243 0.407
\delta -0.264 0.026 0.222
\tau_1/\tau_2 0.568 0.935 1.321
Q_{PAH} 0.419 1.353 3.629
U_{min} 2.553 7.500 14.513
{\rm log}_{10}(\gamma_e)\, -2.726 -1.601 -0.669

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.402 -3.368 -2.212
{\rm log}_{10}(\tau_{AGN})\, 1.097 1.625 1.979

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.747 -0.497 -0.256
0.03-0.10 Gyr -1.354 -0.650 -0.277
0.10-0.33 Gyr -1.654 -0.812 -0.366
0.33-1.09 Gyr -1.747 -0.884 -0.438
1.09-3.60 Gyr -1.550 -0.662 -0.183
3.60-11.89 Gyr -0.275 0.252 0.359
11.89-13.21 Gyr 0.101 0.626 1.238