2025ktw

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Information

Transient

Name: AT2025ktw
Right ascension: 16h08m58.21s
Declination: 18d27m02.45s
Discovery Date: May 3, 2025, 9:09 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.035

Host

Name: 2025ktw
Right ascension: 16h08m58.19s
Declination: 18d27m03.48s
Redshift: 0.072747
Photometric Redshift: 0.091
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 17.83
Transient MWEBV processed 0.05
Host match processed 2.17
Host information processed 0.09
Host MWEBV processed 0.04
Global aperture construction processed 0.67
Global aperture photometry processed 7.53
Validate global photometry processed 20.71
Global host SED inference processed 399.27
Local aperture photometry processed 7.44
Validate local photometry processed 0.03
Local host SED inference processed 416.26
 

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) = 16h08m58.21s, 18d27m02.45s
semi major axis, semi minor axis (arcsec) = 1.45, 1.45
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_g 48.39 1.84 19.688 0.041 AB
DES_g 64.12 0.44 19.383 0.007 AB
PanSTARRS_g 49.53 0.4 19.663 0.009 AB
SDSS_r 61.7 2.12 19.424 0.037 AB
PanSTARRS_r 53.72 0.43 19.575 0.009 AB
DES_r 79.28 0.57 19.152 0.008 AB
SDSS_i 89.77 2.65 19.017 0.032 AB
PanSTARRS_i 77.21 0.39 19.181 0.006 AB
PanSTARRS_z 69.16 0.94 19.300 0.015 AB
SDSS_z 78.05 4.67 19.169 0.065 AB
DES_z 88.78 2.49 19.029 0.030 AB
PanSTARRS_y 79.49 2.26 19.149 0.031 AB

Aperture details

RA, DEC (J2000) = 16h08m58.19s, 18d27m03.60s
semi major axis, semi minor axis (arcsec) = 2.87, 2.46
angle (degrees, anti-clockwise from east) = -13.12

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 14.9 2.94 20.967 0.215 AB
GALEX_NUV 18.47 2.01 20.734 0.118 AB
SDSS_u 47.03 2.48 19.719 0.057 AB
SDSS_g 88.53 2.53 19.032 0.031 AB
DES_g 96.48 0.55 18.939 0.006 AB
PanSTARRS_g 94.64 0.71 18.960 0.008 AB
SDSS_r 106.17 2.89 18.835 0.030 AB
PanSTARRS_r 105.8 0.76 18.839 0.008 AB
DES_r 126.02 0.74 18.649 0.006 AB
SDSS_i 151.74 3.67 18.447 0.026 AB
PanSTARRS_i 146.34 0.68 18.487 0.005 AB
PanSTARRS_z 133.49 1.64 18.586 0.013 AB
SDSS_z 133.03 8.05 18.590 0.066 AB
DES_z 146.6 3.25 18.485 0.024 AB
PanSTARRS_y 153.61 3.95 18.434 0.028 AB
2MASS_J 156.81 90.44 17.517 0.626 Vega
2MASS_H 79.5 163.59 17.781 2.234 Vega
2MASS_K 211.0 146.5 16.252 0.754 Vega
WISE_W1 67.69 7.38 16.625 0.118 Vega
WISE_W2 42.42 9.56 16.492 0.245 Vega
WISE_W3 161.16 58.06 13.208 0.391 Vega
WISE_W4 861.08 453.48 9.942 0.572 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})\, 8.570 8.825 9.015
{\rm log}_{10}({\rm SFR}) -0.808 -0.442 -0.038
{\rm log}_{10}({\rm sSFR}) -9.723 -9.276 -8.686
{\rm stellar\ age} 1.782 4.280 6.206

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.315 -0.460 0.030
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.505 -1.165 -0.278

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.140 0.287 0.555
\delta -0.731 -0.242 0.130
\tau_1/\tau_2 0.595 0.935 1.296
Q_{PAH} 0.727 2.861 5.603
U_{min} 3.455 8.610 15.278
{\rm log}_{10}(\gamma_e)\, -2.780 -1.699 -0.688

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.841 -1.865 -0.578
{\rm log}_{10}(\tau_{AGN})\, 1.062 1.602 1.980

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.681 -0.436 -0.232
0.03-0.10 Gyr -1.000 -0.441 0.048
0.10-0.33 Gyr -1.079 -0.567 -0.162
0.33-1.07 Gyr -1.377 -0.773 -0.446
1.07-3.52 Gyr -1.823 -1.066 -0.741
3.52-11.51 Gyr -2.337 -1.365 -0.952
11.51-12.79 Gyr -2.445 -1.431 -0.842

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.792 9.009 9.235
{\rm log}_{10}({\rm SFR}) -0.478 -0.156 0.142
{\rm log}_{10}({\rm sSFR}) -9.571 -9.192 -8.794
{\rm stellar\ age} 1.283 3.962 5.888

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.440 -0.767 -0.215
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.312 0.014 0.174

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.137 0.232 0.413
\delta -0.765 -0.425 -0.138
\tau_1/\tau_2 0.749 1.132 1.496
Q_{PAH} 0.803 2.029 3.506
U_{min} 2.585 7.559 14.477
{\rm log}_{10}(\gamma_e)\, -2.918 -1.877 -0.877

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.097 -2.757 -1.770
{\rm log}_{10}(\tau_{AGN})\, 1.013 1.484 1.900

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.658 -0.467 -0.327
0.03-0.10 Gyr -0.458 -0.062 0.266
0.10-0.33 Gyr -0.291 0.029 0.308
0.33-1.07 Gyr -1.523 -0.577 -0.215
1.07-3.52 Gyr -1.955 -0.998 -0.578
3.52-11.51 Gyr -2.339 -1.225 -0.749
11.51-12.79 Gyr -2.387 -1.196 -0.595