ASASSN-15tg

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Information

Transient

Name: ASASSN-15tg
Right ascension: 0h20m41.04s
Declination: 25d13m44.57s
Discovery Date: None
Classification: SN Ia
Redshift: 0.035430
MW E(B-V): 0.025

Host

Name: ASASSN-15tg
Right ascension: 0h20m41.60s
Declination: 25d13m40.58s
Redshift: 0.035615
Photometric Redshift: 0.048
 

Processing Status

Task Name Status Time taken (s) Warning Flag
Host match processed 0.97
Cutout download processed 16.62
Global aperture construction processed 0.58
Local aperture photometry processed 5.8
Global aperture photometry processed 5.48
Validate local photometry processed 0.03
Validate global photometry processed 16.82
Host information processed 0.12
Global host SED inference processing None
Local host SED inference processed None
Transient information processed 0.0
Transient MWEBV processed 0.03
Host MWEBV processed 0.05
Log transient processing status processing 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) = 0h20m41.04s, 25d13m44.57s
semi major axis, semi minor axis (arcsec) = 2.82, 2.82
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error
SDSS_u 26.12 2.55 20.357 0.106
SDSS_g 245.04 4.12 17.927 0.018
PanSTARRS_g 293.27 0.9 17.732 0.003
SDSS_r 791.57 7.39 16.654 0.010
PanSTARRS_r 866.74 0.86 16.555 0.001
DES_r 909.71 2.56 16.503 0.003
SDSS_i 1328.97 9.66 16.091 0.008
PanSTARRS_i 1469.71 1.34 15.982 0.001
PanSTARRS_z 1941.52 2.74 15.680 0.002
SDSS_z 1732.37 14.02 15.803 0.009
DES_z 1688.76 7.88 15.831 0.005
PanSTARRS_y 2002.16 6.2 15.646 0.003
2MASS_H 1809.4 86.57 14.389 0.052

Aperture details

RA, DEC (J2000) = 0h20m41.28s, 25d13m42.56s
semi major axis, semi minor axis (arcsec) = 16.75, 6.33
angle (degrees, anti-clockwise from east) = -57.79

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error
GALEX_FUV 86.14 5.55 19.062 0.070
GALEX_NUV 108.22 3.11 18.814 0.031
SDSS_u 133.85 8.76 18.583 0.071
SDSS_g 734.81 7.5 16.735 0.011
PanSTARRS_g 808.53 3.01 16.631 0.004
SDSS_r 1651.28 11.33 15.855 0.007
PanSTARRS_r 1671.97 2.61 15.842 0.002
DES_r 1772.43 3.78 15.779 0.002
SDSS_i 2455.57 14.75 15.425 0.007
PanSTARRS_i 2507.23 3.92 15.402 0.002
SDSS_z 3029.11 35.65 15.197 0.013
DES_z 3100.47 10.93 15.171 0.004
2MASS_J 4154.85 231.67 13.959 0.061
2MASS_H 4911.06 362.52 13.304 0.080
2MASS_K 3613.33 359.04 13.167 0.108
WISE_W1 1706.49 27.93 13.121 0.018
WISE_W2 945.74 32.76 13.122 0.038
WISE_W3 1087.54 136.58 11.135 0.136
WISE_W4 3839.38 957.29 8.319 0.271
 

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})\, 10.179 10.283 10.362
{\rm log}_{10}({\rm SFR}) -1.483 -0.662 -0.187
{\rm log}_{10}({\rm sSFR}) -11.842 -10.922 -10.428
{\rm stellar\ age} 7.902 11.307 12.580

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.906 -1.726 -1.444
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.909 -1.572 -0.606

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 1.064 1.228 1.392
\delta -0.806 -0.686 -0.543
\tau_1/\tau_2 0.575 1.001 1.406
Q_{PAH} 0.418 2.092 4.619
U_{min} 3.497 9.692 17.708
{\rm log}_{10}(\gamma_e)\, -2.879 -1.581 -0.842

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.230 -2.250 -0.479
{\rm log}_{10}(\tau_{AGN})\, 0.940 1.442 1.861

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.339 -0.796 -0.202
0.03-0.10 Gyr -2.244 -0.780 -0.156
0.10-0.33 Gyr -3.499 -1.111 -0.321
0.33-1.09 Gyr -4.185 -1.418 -0.464
1.09-3.61 Gyr -4.198 -1.605 -0.188
3.61-11.95 Gyr -2.299 -0.108 0.429
11.95-13.28 Gyr 0.338 1.322 1.492

Global parameter details

Documentation