2020nbu

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Information

Transient

Name: AT2020nbu
Right ascension: 1h55m00.82s
Declination: -4d41m03.89s
Discovery Date: June 20, 2020, 2:09 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.021

Host

Name:
Right ascension: 1h55m00.84s
Declination: -4d41m03.43s
Redshift: None
Photometric Redshift: 0.028

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	6.57
Cutout download	processed	31.35
Global aperture construction	processed	0.7
Local aperture photometry	processed	7.53
Global aperture photometry	processed	6.7
Validate local photometry	processed	0.03
Validate global photometry	processed	17.98
Host information	processed	0.15
Global host SED inference	processed	658.48
Local host SED inference	processed	663.11
Transient information	processed	0.0
Transient MWEBV	processed	0.04
Host MWEBV	processed	0.05
Processing status	completed	N/A	N/A

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) = 1h55m00.82s, -4d41m03.89s
semi major axis, semi minor axis (arcsec) = 3.52, 3.52
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	241.18	4.86	17.944	0.022	AB
SDSS_g	510.07	5.94	17.131	0.013	AB
DES_g	521.85	0.78	17.106	0.002	AB
PanSTARRS_g	521.91	1.06	17.106	0.002	AB
SDSS_r	722.99	7.18	16.752	0.011	AB
PanSTARRS_r	717.48	1.11	16.760	0.002	AB
DES_r	774.43	1.18	16.678	0.002	AB
SDSS_i	884.65	8.14	16.533	0.010	AB
PanSTARRS_i	890.46	1.1	16.526	0.001	AB
PanSTARRS_z	949.46	2.71	16.456	0.003	AB
SDSS_z	1047.77	13.1	16.349	0.014	AB
DES_z	1051.6	3.68	16.345	0.004	AB
PanSTARRS_y	1092.74	7.79	16.304	0.008	AB
2MASS_J	1302.84	81.87	15.218	0.068	Vega
2MASS_H	1382.37	124.33	14.681	0.098	Vega
2MASS_K	1138.72	147.66	14.421	0.141	Vega

Aperture details

RA, DEC (J2000) = 1h55m00.84s, -4d41m03.26s
semi major axis, semi minor axis (arcsec) = 5.03, 4.11
angle (degrees, anti-clockwise from east) = -132.81

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	116.62	5.37	18.733	0.050	AB
SDSS_u	262.13	5.53	17.854	0.023	AB
SDSS_g	555.41	6.24	17.038	0.012	AB
DES_g	562.13	0.82	17.025	0.002	AB
PanSTARRS_g	571.43	1.31	17.008	0.002	AB
SDSS_r	802.62	7.68	16.639	0.010	AB
PanSTARRS_r	805.33	1.38	16.635	0.002	AB
DES_r	845.32	1.25	16.582	0.002	AB
SDSS_i	986.49	8.8	16.415	0.010	AB
PanSTARRS_i	1004.03	1.37	16.396	0.001	AB
PanSTARRS_z	1062.36	3.42	16.334	0.003	AB
SDSS_z	1201.79	15.81	16.200	0.014	AB
DES_z	1151.65	3.89	16.247	0.004	AB
PanSTARRS_y	1253.29	9.92	16.155	0.009	AB
2MASS_J	1665.77	121.46	14.951	0.079	Vega
2MASS_H	1602.89	182.9	14.520	0.124	Vega
2MASS_K	1587.51	219.79	14.060	0.150	Vega
WISE_W1	1023.48	16.62	13.676	0.018	Vega
WISE_W2	619.02	18.87	13.582	0.033	Vega
WISE_W3	777.15	57.8	11.500	0.081	Vega
WISE_W4	2022.03	446.12	9.016	0.240	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})\,	9.230	9.414	9.566
{\rm log}_{10}({\rm SFR})	-0.334	0.372	0.942
{\rm log}_{10}({\rm sSFR})	-9.749	-9.041	-8.351
{\rm stellar\ age}	1.978	6.663	9.438

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.785	-1.393	-0.864
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.435	0.102	0.407

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.247	0.789	1.313
\delta	-0.259	-0.046	0.187
\tau_1/\tau_2	0.583	1.040	1.517
Q_{PAH}	0.618	1.787	3.525
U_{min}	3.339	9.278	17.246
{\rm log}_{10}(\gamma_e)\,	-3.523	-2.418	-1.124

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.363	-3.019	-0.926
{\rm log}_{10}(\tau_{AGN})\,	0.907	1.444	1.970

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.504	-0.828	-0.290
0.03-0.10 Gyr	-0.209	0.520	1.099
0.10-0.33 Gyr	-2.329	-0.695	0.154
0.33-1.10 Gyr	-4.047	-1.384	-0.513
1.10-3.63 Gyr	-3.579	-1.025	-0.390
3.63-12.04 Gyr	-3.005	-0.740	-0.356
12.04-13.38 Gyr	-3.372	-0.618	0.377

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.209	9.320	9.420
{\rm log}_{10}({\rm SFR})	-0.151	0.119	0.338
{\rm log}_{10}({\rm sSFR})	-9.525	-9.213	-8.921
{\rm stellar\ age}	3.694	5.849	7.348

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.621	-0.375	-0.186
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.465	0.158	0.407

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.320	0.508	0.700
\delta	0.164	0.294	0.370
\tau_1/\tau_2	0.441	0.795	1.140
Q_{PAH}	0.332	0.866	1.886
U_{min}	2.647	7.114	13.129
{\rm log}_{10}(\gamma_e)\,	-3.734	-3.230	-2.355

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-2.888	-2.142	-1.844
{\rm log}_{10}(\tau_{AGN})\,	0.790	0.934	1.219

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.288	-0.791	-0.532
0.03-0.10 Gyr	-0.022	0.265	0.487
0.10-0.33 Gyr	-0.794	-0.255	0.057
0.33-1.10 Gyr	-1.080	-0.565	-0.298
1.10-3.63 Gyr	-0.934	-0.538	-0.288
3.63-12.04 Gyr	-1.362	-0.738	-0.514
12.04-13.38 Gyr	-1.497	-0.715	-0.184