2025ktt

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Information

Transient

Name: SN2025ktt
Right ascension: 18h08m46.78s
Declination: 23d10m14.19s
Discovery Date: May 16, 2025, 10:16 a.m.
Classification: SN Ia
Redshift: 0.080000
MW E(B-V): 0.106

Host

Name: 2025ktt
Right ascension: 18h08m46.77s
Declination: 23d10m14.41s
Redshift: 0.056893
Photometric Redshift: 0.061
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 0.33
Transient MWEBV processed 0.17
Host match processed 7.17
Host information processed 0.1
Host MWEBV processed 0.08
Global aperture construction processed 0.68
Global aperture photometry processed 7.4
Validate global photometry processed 18.36
Global host SED inference processed 757.02
Local aperture photometry processed 7.03
Validate local photometry processed 0.03
Local host SED inference processed 503.89
 

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) = 18h08m46.78s, 23d10m14.19s
semi major axis, semi minor axis (arcsec) = 1.33, 1.33
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 135.57 0.43 18.570 0.003 AB
SDSS_r 348.77 4.88 17.544 0.015 AB
PanSTARRS_r 324.85 0.56 17.621 0.002 AB
DES_r 246.25 2.17 17.922 0.010 AB
SDSS_i 564.5 6.23 17.021 0.012 AB
PanSTARRS_i 545.01 0.67 17.059 0.001 AB
PanSTARRS_z 703.44 1.16 16.782 0.002 AB
SDSS_z 734.98 7.9 16.734 0.012 AB
DES_z 809.48 8.49 16.629 0.011 AB
PanSTARRS_y 851.11 2.58 16.575 0.003 AB

Aperture details

RA, DEC (J2000) = 18h08m46.75s, 23d10m14.55s
semi major axis, semi minor axis (arcsec) = 8.16, 5.91
angle (degrees, anti-clockwise from east) = -75.42

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
SDSS_u 102.38 5.32 18.874 0.056 AB
SDSS_g 434.29 5.7 17.306 0.014 AB
PanSTARRS_r 1121.66 2.23 16.275 0.002 AB
DES_r 672.27 3.67 16.831 0.006 AB
SDSS_i 1684.84 11.59 15.834 0.007 AB
PanSTARRS_z 2240.72 5.12 15.524 0.002 AB
DES_z 2223.22 14.3 15.533 0.007 AB
2MASS_J 3427.82 211.73 14.168 0.067 Vega
2MASS_H 4386.06 331.0 13.427 0.082 Vega
2MASS_K 3807.67 365.93 13.111 0.104 Vega
WISE_W4 -26.98 379.37 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})\, 10.091 10.368 10.525
{\rm log}_{10}({\rm SFR}) 0.200 0.865 1.392
{\rm log}_{10}({\rm sSFR}) -10.286 -9.510 -8.683
{\rm stellar\ age} 1.460 5.945 8.300

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.759 -0.366 -0.131
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.150 -0.874 -0.457

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.903 1.419 1.895
\delta -0.546 -0.314 -0.114
\tau_1/\tau_2 0.536 0.998 1.486
Q_{PAH} 0.547 2.004 3.787
U_{min} 2.941 8.578 16.247
{\rm log}_{10}(\gamma_e)\, -3.424 -2.127 -0.942

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.241 -2.544 -0.262
{\rm log}_{10}(\tau_{AGN})\, 0.948 1.572 2.040

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.378 0.897 1.335
0.03-0.10 Gyr -0.316 0.710 1.429
0.10-0.33 Gyr -1.129 0.251 0.913
0.33-1.07 Gyr -1.218 0.329 0.920
1.07-3.50 Gyr -1.697 0.146 0.641
3.50-11.43 Gyr -1.754 0.283 0.628
11.43-12.70 Gyr -1.601 0.341 1.141

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.835 11.038 11.232
{\rm log}_{10}({\rm SFR}) 0.667 1.573 2.111
{\rm log}_{10}({\rm sSFR}) -10.390 -9.505 -8.854
{\rm stellar\ age} 2.204 6.947 10.594

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.573 -0.959 -0.424
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -0.951 -0.623 -0.373

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 1.131 1.642 2.352
\delta -0.180 0.019 0.271
\tau_1/\tau_2 0.311 0.789 1.364
Q_{PAH} 0.688 2.674 4.840
U_{min} 2.794 8.744 17.217
{\rm log}_{10}(\gamma_e)\, -2.985 -1.531 -0.500

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.440 -1.205 -0.165
{\rm log}_{10}(\tau_{AGN})\, 0.992 1.530 1.938

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr 0.514 1.196 1.650
0.03-0.10 Gyr 0.286 1.612 2.243
0.10-0.33 Gyr -1.631 0.379 1.606
0.33-1.07 Gyr -2.785 0.029 1.301
1.07-3.50 Gyr -2.147 0.470 1.347
3.50-11.43 Gyr -1.319 0.782 1.282
11.43-12.70 Gyr -1.508 1.037 2.197