2025xkk

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Information

Transient

Name: AT2025xkk
Right ascension: 23h23m14.41s
Declination: -2d16m59.22s
Discovery Date: Sept. 14, 2025, 5:54 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.046

Host

Name:
Right ascension: 23h23m14.35s
Declination: -2d17m00.84s
Redshift: None
Photometric Redshift: 0.078
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 18.76
Transient MWEBV processed 0.31
Host match processed 6.35
Host information processed 0.11
Host MWEBV processed 0.05
Global aperture construction processed 0.61
Global aperture photometry processed 6.52
Validate global photometry processed 17.15
Global host SED inference processed 395.21
Local aperture photometry processed 6.93
Validate local photometry processed 0.03
Local host SED inference processed 450.01
 

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) = 23h23m14.41s, -2d16m59.22s
semi major axis, semi minor axis (arcsec) = 1.36, 1.36
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
DES_g 25.76 0.45 20.373 0.019 AB
PanSTARRS_g 25.11 0.3 20.400 0.013 AB
SDSS_r 35.71 1.68 20.018 0.051 AB
PanSTARRS_r 37.39 0.46 19.968 0.013 AB
DES_r 42.21 2.2 19.837 0.057 AB
SDSS_i 47.66 2.09 19.705 0.048 AB
PanSTARRS_i 48.58 0.51 19.684 0.011 AB
PanSTARRS_z 53.36 0.91 19.582 0.018 AB
SDSS_z 55.37 6.18 19.542 0.121 AB
DES_z 58.45 1.2 19.483 0.022 AB
PanSTARRS_y 56.12 2.04 19.527 0.040 AB

Aperture details

RA, DEC (J2000) = 23h23m14.33s, -2d17m00.47s
semi major axis, semi minor axis (arcsec) = 5.84, 4.69
angle (degrees, anti-clockwise from east) = -151.46

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 11.45 0.73 21.253 0.069 AB
GALEX_NUV 16.37 0.58 20.865 0.038 AB
SDSS_u 33.54 5.68 20.086 0.184 AB
SDSS_g 131.94 3.41 18.599 0.028 AB
DES_g 135.65 1.07 18.569 0.009 AB
PanSTARRS_g 139.77 1.12 18.536 0.009 AB
SDSS_r 211.3 4.55 18.088 0.023 AB
PanSTARRS_r 212.48 1.73 18.082 0.009 AB
DES_r 234.7 5.28 17.974 0.024 AB
SDSS_i 282.53 6.08 17.772 0.023 AB
PanSTARRS_i 278.41 1.9 17.788 0.007 AB
PanSTARRS_z 306.08 3.43 17.685 0.012 AB
SDSS_z 262.87 23.18 17.851 0.096 AB
DES_z 332.26 3.01 17.596 0.010 AB
PanSTARRS_y 374.96 7.78 17.465 0.023 AB
2MASS_J 567.2 124.28 16.121 0.238 Vega
2MASS_H 533.8 204.82 15.714 0.417 Vega
2MASS_K 728.51 237.26 14.906 0.354 Vega
WISE_W1 183.12 12.56 15.544 0.074 Vega
WISE_W2 96.9 16.28 15.595 0.182 Vega
WISE_W3 249.75 76.14 12.732 0.331 Vega
WISE_W4 -550.09 441.56 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.839 8.987 9.090
{\rm log}_{10}({\rm SFR}) -1.819 -1.273 -0.701
{\rm log}_{10}({\rm sSFR}) -10.837 -10.281 -9.672
{\rm stellar\ age} 2.891 5.718 6.982

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.571 -1.099 -0.592
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.694 -0.710 0.181

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.084 0.277 0.715
\delta -0.674 -0.188 0.204
\tau_1/\tau_2 0.748 1.086 1.418
Q_{PAH} 0.989 2.601 5.130
U_{min} 2.983 8.152 14.953
{\rm log}_{10}(\gamma_e)\, -2.916 -1.806 -0.748

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -1.962 -0.416 -0.020
{\rm log}_{10}(\tau_{AGN})\, 1.147 1.456 1.906

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.911 -1.429 -0.987
0.03-0.10 Gyr -1.986 -1.262 -0.626
0.10-0.33 Gyr -1.562 -0.947 -0.371
0.33-1.07 Gyr -1.273 -0.772 -0.396
1.07-3.50 Gyr -1.299 -0.851 -0.638
3.50-11.45 Gyr -1.683 -0.989 -0.764
11.45-12.73 Gyr -1.918 -1.046 -0.586

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 9.685 9.749 9.811
{\rm log}_{10}({\rm SFR}) -0.759 -0.561 -0.361
{\rm log}_{10}({\rm sSFR}) -10.525 -10.316 -10.092
{\rm stellar\ age} 4.864 6.017 6.930

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.875 -0.618 -0.416
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.064 0.151 0.320

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.083 0.143 0.269
\delta -0.773 -0.383 -0.007
\tau_1/\tau_2 0.899 1.209 1.510
Q_{PAH} 0.588 1.672 3.522
U_{min} 2.508 7.358 14.161
{\rm log}_{10}(\gamma_e)\, -2.646 -1.587 -0.573

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.235 -3.170 -2.186
{\rm log}_{10}(\tau_{AGN})\, 0.981 1.463 1.887

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.610 -0.476 -0.341
0.03-0.10 Gyr -0.918 -0.599 -0.336
0.10-0.33 Gyr -0.599 -0.289 -0.029
0.33-1.07 Gyr -0.227 0.006 0.165
1.07-3.50 Gyr -0.255 -0.056 0.143
3.50-11.45 Gyr -0.408 -0.180 -0.049
11.45-12.73 Gyr -0.768 -0.227 0.169