2020gbt results

2020gbt results

Information

Transient

Name:	`AT2020gbt`
Right ascension:	`12h24m24.91s`
Declination:	`31d11m13.13s`
Discovery Date:	`April 4, 2020, 9:46 a.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):	`0.019`

Host

Name:	`1935516`
Right ascension:	`12h24m25.16s`
Declination:	`31d11m08.86s`
Redshift:	`0.059507`
Photometric Redshift:	`0.060`

Cutout Download Report

Downloaded	Unavailable
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_r DES_z	DES_g DES_i DES_Y

Processing Status: completed

Task Name	Status	Time (s)
Cutout download	processed	24.6
Transient MWEBV	processed	0.04
Host match	processed	3.69
Host information	processed	0.16
Host MWEBV	processed	0.04
Global aperture construction	processed	0.63
Global aperture photometry	processed	5.46
Validate global photometry	processed	15.97
Global host SED inference	processed	417.32
Local aperture photometry	processed	6.32
Validate local photometry	processed	0.02
Local host SED inference	processed	436.45

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	12h24m24.91s, 31d11m13.13s
semi major axis, semi minor axis (arcsec):	1.74, 1.74
angle (degrees, anti-clockwise from east):	0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	0.62	1.26	24.427	2.221	AB
SDSS_g	13.36	1.03	21.085	0.084	AB
PanSTARRS_g	14.19	0.37	21.020	0.029	AB
SDSS_r	18.59	1.32	20.727	0.077	AB
PanSTARRS_r	21.36	0.41	20.576	0.021	AB
DES_r	22.04	0.93	20.542	0.046	AB
SDSS_i	26.69	1.74	20.334	0.071	AB
PanSTARRS_i	29.21	0.56	20.236	0.021	AB
PanSTARRS_z	30.41	1.49	20.192	0.053	AB
SDSS_z	35.44	4.55	20.026	0.139	AB
DES_z	27.27	1.12	20.311	0.044	AB
PanSTARRS_y	34.73	2.41	20.048	0.075	AB

Aperture details

RA, DEC (J2000):	12h24m25.17s, 31d11m08.65s
semi major axis, semi minor axis (arcsec):	16.62, 6.21
angle (degrees, anti-clockwise from east):	-8.51

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	51.56	5.98	19.619	0.126	AB
GALEX_NUV	64.59	0.48	19.375	0.008	AB
SDSS_u	52.71	7.52	19.595	0.155	AB
SDSS_g	555.05	6.59	17.039	0.013	AB
PanSTARRS_g	584.99	2.2	16.982	0.004	AB
SDSS_r	984.26	9.15	16.417	0.010	AB
PanSTARRS_r	992.93	2.4	16.408	0.003	AB
SDSS_i	1360.02	11.62	16.066	0.009	AB
PanSTARRS_i	1344.4	3.31	16.079	0.003	AB
PanSTARRS_z	1602.4	8.6	15.888	0.006	AB
SDSS_z	1684.16	27.29	15.834	0.018	AB
PanSTARRS_y	1857.05	14.0	15.728	0.008	AB
2MASS_J	2566.55	228.64	14.482	0.097	Vega
2MASS_H	2397.05	381.54	14.083	0.173	Vega
2MASS_K	1869.82	373.54	13.883	0.217	Vega
WISE_W1	1148.74	24.97	13.550	0.024	Vega
WISE_W2	670.26	29.54	13.495	0.048	Vega
WISE_W3	1051.98	127.27	11.171	0.131	Vega
WISE_W4	272.11	575.07	11.193	2.295	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.469	8.597	8.717
{\rm log}_{10}({\rm SFR})	-1.851	-1.278	-0.762
{\rm log}_{10}({\rm sSFR})	-10.462	-9.913	-9.351
{\rm stellar\ age}	3.931	6.292	7.669

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.769	-1.355	-0.833
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.739	-0.995	0.126

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.299	0.738	1.113
\delta	-0.347	0.064	0.283
\tau_1/\tau_2	0.778	1.104	1.429
Q_{PAH}	0.905	2.506	4.935
U_{min}	2.896	7.659	14.443
{\rm log}_{10}(\gamma_e)\,	-2.909	-1.842	-0.743

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.706	-0.800	-0.027
{\rm log}_{10}(\tau_{AGN})\,	1.076	1.579	1.992

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.882	-1.350	-0.935
0.03-0.10 Gyr	-1.947	-1.286	-0.686
0.10-0.33 Gyr	-1.958	-1.327	-0.777
0.33-1.08 Gyr	-2.013	-1.385	-0.925
1.08-3.55 Gyr	-1.756	-1.327	-1.070
3.55-11.67 Gyr	-1.864	-1.350	-1.139
11.67-12.96 Gyr	-2.090	-1.411	-0.875

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.452	10.528	10.585
{\rm log}_{10}({\rm SFR})	-0.635	-0.313	0.000
{\rm log}_{10}({\rm sSFR})	-11.171	-10.843	-10.522
{\rm stellar\ age}	8.398	11.232	12.208

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.638	-0.497	-0.378
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.371	-0.763	-0.148

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.047	0.114	0.220
\delta	-0.243	0.114	0.299
\tau_1/\tau_2	0.463	0.944	1.430
Q_{PAH}	0.925	2.830	5.301
U_{min}	2.716	8.170	15.874
{\rm log}_{10}(\gamma_e)\,	-2.061	-1.214	-0.439

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.256	-3.169	-2.246
{\rm log}_{10}(\tau_{AGN})\,	1.042	1.544	1.919

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.626	-0.363	-0.170
0.03-0.10 Gyr	-1.105	-0.316	0.098
0.10-0.33 Gyr	-2.084	-0.702	-0.194
0.33-1.08 Gyr	-2.639	-0.872	-0.291
1.08-3.55 Gyr	-2.709	-0.968	-0.297
3.55-11.67 Gyr	-1.285	0.132	0.667
11.67-12.96 Gyr	0.883	1.575	1.711