2025ykj

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Information

Transient

Name: AT2025ykj
Right ascension: 4h03m16.62s
Declination: -5d12m34.84s
Discovery Date: Sept. 15, 2025, 10:09 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.088

Host

Name:
Right ascension: 4h03m16.63s
Declination: -5d12m35.10s
Redshift: None
Photometric Redshift: 0.148
 

Processing Status: blocked

Task Name Status Time taken (s) Warning Flag
Cutout download processed 18.28
Transient MWEBV processed 0.05
Host match processed 5.59
Host information processed 0.11
Host MWEBV processed 0.12
Global aperture construction processed 0.62
Global aperture photometry processed 6.2
Validate global photometry processed 16.97
Global host SED inference processed 529.42
Local aperture photometry processed 6.62
Validate local photometry no valid phot 0.03
Local host SED inference not processed None
 

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) = 4h03m16.62s, -5d12m34.84s
semi major axis, semi minor axis (arcsec) = 0.77, 0.77
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys

Data not available


Aperture details

RA, DEC (J2000) = 4h03m16.61s, -5d12m35.04s
semi major axis, semi minor axis (arcsec) = 4.43, 3.17
angle (degrees, anti-clockwise from east) = -115.63

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV -0.42 0.61 AB
GALEX_NUV 0.63 0.58 24.398 1.002 AB
SDSS_u 7.18 3.25 21.759 0.491 AB
SDSS_g 68.6 2.46 19.309 0.039 AB
DES_g 81.12 0.39 19.127 0.005 AB
PanSTARRS_g 85.38 1.18 19.072 0.015 AB
SDSS_r 205.4 4.18 18.119 0.022 AB
PanSTARRS_r 208.85 1.22 18.100 0.006 AB
DES_r 228.09 1.09 18.005 0.005 AB
SDSS_i 325.45 5.7 17.619 0.019 AB
PanSTARRS_i 329.23 1.32 17.606 0.004 AB
PanSTARRS_z 425.98 2.83 17.327 0.007 AB
SDSS_z 430.68 13.0 17.315 0.033 AB
DES_z 473.42 2.44 17.212 0.006 AB
PanSTARRS_y 537.33 6.59 17.074 0.013 AB
2MASS_J 928.11 97.36 15.586 0.114 Vega
2MASS_H 945.53 144.13 15.093 0.165 Vega
2MASS_K 1007.66 195.62 14.554 0.211 Vega
WISE_W1 309.97 13.31 14.973 0.047 Vega
WISE_W2 191.42 15.64 14.856 0.089 Vega
WISE_W3 -2.72 61.14 Vega
WISE_W4 -290.89 405.02 Vega
 

Imaging data

Click the image to load the interactive plot.


 

Spectral Energy Distribution

 

Host SED inference


Local parameter details

Documentation

Data not available


Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.651 10.742 10.877
{\rm log}_{10}({\rm SFR}) -1.075 -0.034 0.645
{\rm log}_{10}({\rm sSFR}) -11.912 -10.753 -10.026
{\rm stellar\ age} 6.297 7.297 11.004

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.387 -1.034 -0.795
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.355 -0.386 0.163

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.371 0.523 0.710
\delta -0.947 -0.831 -0.625
\tau_1/\tau_2 0.650 1.121 1.576
Q_{PAH} 0.516 1.899 4.354
U_{min} 3.200 9.146 16.817
{\rm log}_{10}(\gamma_e)\, -2.738 -1.556 -0.580

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.287 -3.064 -1.997
{\rm log}_{10}(\tau_{AGN})\, 1.006 1.475 1.865

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.448 -0.159 0.284
0.03-0.10 Gyr -1.962 -0.022 0.753
0.10-0.32 Gyr -2.504 -0.049 0.693
0.32-1.03 Gyr -3.156 -0.217 0.501
1.03-3.32 Gyr -2.415 0.170 0.751
3.32-10.69 Gyr -0.609 0.857 1.042
10.69-11.88 Gyr 0.288 1.143 2.034