2025hel

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Information

Transient

Name: AT2025hel
Right ascension: 20h11m45.10s
Declination: 19d53m07.55s
Discovery Date: April 6, 2025, 11:23 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.344

Host

Name: 2025hel
Right ascension: 20h11m44.66s
Declination: 19d53m10.81s
Redshift: None
Photometric Redshift: 0.095
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 7.68
Cutout download processed 3.18
Global aperture construction processed 0.75
Local aperture photometry processed 4.15
Global aperture photometry processed 4.32
Validate local photometry processed 0.02
Validate global photometry processed 12.51
Host information processed 0.09
Global host SED inference processed 515.18
Local host SED inference processed 497.19
Transient information processed 0.0
Transient MWEBV processed 0.05
Host MWEBV processed 0.08
Log transient processing status 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) = 20h11m45.10s, 19d53m07.55s
semi major axis, semi minor axis (arcsec) = 1.14, 1.14
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_i 30.93 0.66 20.174 0.023 AB
PanSTARRS_z 38.47 1.27 19.937 0.036 AB
PanSTARRS_y 44.61 2.59 19.776 0.063 AB

Aperture details

RA, DEC (J2000) = 20h11m44.44s, 19d53m13.30s
semi major axis, semi minor axis (arcsec) = 1.66, 1.37
angle (degrees, anti-clockwise from east) = -152.31

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
PanSTARRS_g 10.93 0.48 21.304 0.048 AB
PanSTARRS_r 23.04 0.43 20.494 0.020 AB
PanSTARRS_i 26.38 0.77 20.347 0.032 AB
PanSTARRS_z 29.54 1.46 20.224 0.054 AB
PanSTARRS_y 36.17 2.85 20.004 0.086 AB
2MASS_J 101.64 80.37 17.987 0.858 Vega
2MASS_H 52.7 125.61 18.228 2.588 Vega
2MASS_K -21.04 124.7 Vega
WISE_W1 -19.39 52.36 Vega
WISE_W3 16.88 63.9 15.658 4.110 Vega
WISE_W4 -665.33 380.7 Vega
 

Imaging data

 

Spectral Energy Distribution

 
 
 
 

Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.931 9.212 9.409
{\rm log}_{10}({\rm SFR}) -1.229 -0.577 0.104
{\rm log}_{10}({\rm sSFR}) -10.488 -9.844 -8.951
{\rm stellar\ age} 1.384 5.741 8.000

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.062 -0.401 -0.053
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.215 -0.674 -0.170

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.199 0.477 0.932
\delta -0.745 -0.315 0.142
\tau_1/\tau_2 0.504 0.917 1.353
Q_{PAH} 0.666 2.816 5.621
U_{min} 3.149 8.228 14.734
{\rm log}_{10}(\gamma_e)\, -3.094 -2.026 -0.803

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -2.521 -0.642 -0.013
{\rm log}_{10}(\tau_{AGN})\, 1.080 1.538 1.983

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.154 -0.572 -0.191
0.03-0.10 Gyr -1.619 -0.654 0.191
0.10-0.33 Gyr -2.133 -0.862 -0.110
0.33-1.06 Gyr -2.470 -0.807 -0.176
1.06-3.46 Gyr -2.619 -0.910 -0.495
3.46-11.27 Gyr -2.384 -0.836 -0.470
11.27-12.52 Gyr -2.505 -0.826 -0.086

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 8.588 8.841 9.057
{\rm log}_{10}({\rm SFR}) -0.944 -0.350 0.281
{\rm log}_{10}({\rm sSFR}) -9.921 -9.226 -8.311
{\rm stellar\ age} 0.231 2.275 5.606

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.713 -1.088 -0.219
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.189 -0.356 0.132

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.174 0.431 0.871
\delta -0.551 -0.125 0.201
\tau_1/\tau_2 0.564 0.964 1.407
Q_{PAH} 1.691 3.744 5.559
U_{min} 3.203 8.999 16.637
{\rm log}_{10}(\gamma_e)\, -2.801 -1.568 -0.392

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.708 -1.571 -0.568
{\rm log}_{10}(\tau_{AGN})\, 1.021 1.539 1.940

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.999 -0.572 -0.254
0.03-0.10 Gyr -1.183 -0.293 0.416
0.10-0.33 Gyr -1.092 -0.274 0.270
0.33-1.06 Gyr -2.841 -0.864 -0.245
1.06-3.46 Gyr -4.237 -1.499 -0.762
3.46-11.27 Gyr -5.067 -1.866 -0.993
11.27-12.52 Gyr -5.018 -1.863 -0.837