2025xkw

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Information

Transient

Name: AT2025xkw
Right ascension: 2h04m56.96s
Declination: 31d12m01.76s
Discovery Date: Sept. 14, 2025, 8:21 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.049

Host

Name:
Right ascension: 2h04m56.92s
Declination: 31d12m05.34s
Redshift: 0.074485
Photometric Redshift: 0.076
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 18.2
Transient MWEBV processed 0.12
Host match processed 6.26
Host information processed 0.11
Host MWEBV processed 0.05
Global aperture construction processed 0.67
Global aperture photometry processed 6.02
Validate global photometry processed 16.9
Global host SED inference processed 534.7
Local aperture photometry processed 6.41
Validate local photometry processed 0.03
Local host SED inference processed 438.15
 

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) = 2h04m56.96s, 31d12m01.76s
semi major axis, semi minor axis (arcsec) = 1.41, 1.41
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 17.71 0.22 20.780 0.014 AB
PanSTARRS_g 15.15 0.37 20.949 0.026 AB
SDSS_r 40.59 1.86 19.879 0.050 AB
PanSTARRS_r 34.03 0.45 20.070 0.014 AB
DES_r 42.24 0.54 19.836 0.014 AB
SDSS_i 64.38 2.57 19.378 0.043 AB
PanSTARRS_i 51.7 0.49 19.616 0.010 AB
PanSTARRS_z 66.02 1.04 19.351 0.017 AB
SDSS_z 82.48 5.3 19.109 0.070 AB
DES_z 85.4 1.83 19.071 0.023 AB
PanSTARRS_y 76.37 2.96 19.193 0.042 AB

Aperture details

RA, DEC (J2000) = 2h04m56.90s, 31d12m05.46s
semi major axis, semi minor axis (arcsec) = 7.21, 6.48
angle (degrees, anti-clockwise from east) = -51.85

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 1.25 1.81 23.660 1.574 AB
GALEX_NUV 1.55 1.44 23.425 1.013 AB
SDSS_u 58.86 6.5 19.475 0.120 AB
SDSS_g 383.02 5.71 17.442 0.016 AB
DES_g 439.75 1.1 17.292 0.003 AB
PanSTARRS_g 429.73 1.78 17.317 0.005 AB
SDSS_r 975.41 9.11 16.427 0.010 AB
PanSTARRS_r 997.02 2.16 16.403 0.002 AB
DES_r 1114.55 2.78 16.282 0.003 AB
SDSS_i 1483.36 12.35 15.972 0.009 AB
PanSTARRS_i 1538.16 2.35 15.932 0.002 AB
PanSTARRS_z 1975.97 4.99 15.661 0.003 AB
SDSS_z 2105.45 25.92 15.592 0.013 AB
DES_z 2149.74 9.19 15.569 0.005 AB
PanSTARRS_y 2360.22 14.03 15.468 0.006 AB
2MASS_J 3167.02 153.82 14.253 0.053 Vega
2MASS_H 4277.35 253.66 13.454 0.064 Vega
2MASS_K 3728.88 267.31 13.133 0.078 Vega
WISE_W1 1389.57 45.27 13.344 0.035 Vega
WISE_W2 822.07 65.5 13.274 0.086 Vega
WISE_W3 99.16 122.04 13.735 1.336 Vega
WISE_W4 -201.41 530.84 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})\, 9.289 9.389 9.516
{\rm log}_{10}({\rm SFR}) -1.995 -1.279 -0.647
{\rm log}_{10}({\rm sSFR}) -11.362 -10.671 -9.989
{\rm stellar\ age} 5.827 7.337 9.573

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.227 -0.572 -0.090
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.595 -0.286 0.317

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.363 0.871 1.322
\delta -0.406 -0.083 0.203
\tau_1/\tau_2 0.718 1.069 1.392
Q_{PAH} 1.240 3.544 5.807
U_{min} 2.880 7.964 14.661
{\rm log}_{10}(\gamma_e)\, -3.124 -1.825 -0.531

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.157 -0.548 -0.003
{\rm log}_{10}(\tau_{AGN})\, 1.041 1.552 1.995

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.018 -1.303 -0.727
0.03-0.10 Gyr -2.192 -1.324 -0.616
0.10-0.33 Gyr -2.312 -1.304 -0.545
0.33-1.07 Gyr -2.313 -1.130 -0.491
1.07-3.51 Gyr -2.000 -0.749 -0.410
3.51-11.49 Gyr -0.916 -0.504 -0.326
11.49-12.77 Gyr -0.960 -0.409 0.313

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.780 10.866 10.949
{\rm log}_{10}({\rm SFR}) -2.543 -0.813 0.223
{\rm log}_{10}({\rm sSFR}) -13.468 -11.579 -10.574
{\rm stellar\ age} 7.502 10.503 12.113

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.419 -0.994 -0.719
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.505 -0.467 0.226

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.394 0.551 0.744
\delta -0.929 -0.788 -0.599
\tau_1/\tau_2 0.497 0.960 1.444
Q_{PAH} 0.544 2.168 4.379
U_{min} 3.182 9.833 18.239
{\rm log}_{10}(\gamma_e)\, -2.600 -1.208 -0.503

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.478 -3.565 -2.483
{\rm log}_{10}(\tau_{AGN})\, 1.133 1.638 1.992

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -3.643 -1.324 -0.292
0.03-0.10 Gyr -3.665 -0.916 0.347
0.10-0.33 Gyr -4.202 -1.426 0.137
0.33-1.07 Gyr -4.946 -2.227 -0.230
1.07-3.51 Gyr -3.723 -1.505 0.279
3.51-11.49 Gyr -1.765 0.663 1.107
11.49-12.77 Gyr 0.327 1.858 2.097