2025byd results

2025byd results

Information

Transient

Name:	`AT2025byd`
Right ascension:	`20h50m43.24s`
Declination:	`21d30m38.60s`
Discovery Date:	`Feb. 18, 2025, 1:08 p.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):	`0.099`

Host

Name:	`2025byd`
Right ascension:	`20h50m43.08s`
Declination:	`21d30m41.03s`
Redshift:	`None`
Photometric Redshift:	`0.080`

Cutout Download Report

Downloaded	Unavailable
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 PanSTARRS_g PanSTARRS_r PanSTARRS_i PanSTARRS_z PanSTARRS_y	GALEX_NUV GALEX_FUV SDSS_i SDSS_r SDSS_u SDSS_z SDSS_g DES_g DES_r DES_i DES_z DES_Y

Processing Status: completed

Task Name	Status	Time (s)
Cutout download	processed	2.69
Transient MWEBV	processed	0.09
Host match	processed	4.25
Host information	processed	0.08
Host MWEBV	processed	0.12
Global aperture construction	processed	1.55
Global aperture photometry	processed	3.59
Validate global photometry	processed	10.2
Global host SED inference	processed	529.5
Local aperture photometry	processed	3.58
Validate local photometry	processed	0.02
Local host SED inference	processed	484.32

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	20h50m43.24s, 21d30m38.60s
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	12.12	0.37	21.191	0.033	AB
PanSTARRS_r	20.56	0.4	20.617	0.021	AB
PanSTARRS_i	24.73	0.62	20.417	0.027	AB
PanSTARRS_z	31.81	1.03	20.143	0.035	AB
PanSTARRS_y	31.8	2.59	20.144	0.088	AB

Aperture details

RA, DEC (J2000):	20h50m43.42s, 21d30m39.76s
semi major axis, semi minor axis (arcsec):	2.72, 2.23
angle (degrees, anti-clockwise from east):	-79.93

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
PanSTARRS_g	20.5	0.67	20.621	0.036	AB
PanSTARRS_i	44.3	1.04	19.784	0.026	AB
PanSTARRS_z	56.71	1.72	19.516	0.033	AB
PanSTARRS_y	58.15	4.23	19.489	0.079	AB
2MASS_J	194.8	89.25	17.281	0.497	Vega
2MASS_H	413.26	115.69	15.992	0.304	Vega
2MASS_K	266.61	154.3	15.997	0.628	Vega
WISE_W1	283.28	22.67	15.070	0.087	Vega
WISE_W2	222.75	26.83	14.691	0.131	Vega
WISE_W3	1630.28	64.69	10.695	0.043	Vega
WISE_W4	3393.94	618.36	8.453	0.198	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.664	8.815	8.907
{\rm log}_{10}({\rm SFR})	-2.628	-1.612	-0.905
{\rm log}_{10}({\rm sSFR})	-11.477	-10.489	-9.742
{\rm stellar\ age}	2.367	5.684	7.060

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.398	-0.707	-0.164
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.554	-0.793	0.030

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.078	0.309	0.838
\delta	-0.531	-0.069	0.261
\tau_1/\tau_2	0.665	1.042	1.414
Q_{PAH}	1.439	3.383	5.605
U_{min}	2.975	8.444	15.758
{\rm log}_{10}(\gamma_e)\,	-2.883	-1.795	-0.702

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-1.081	-0.178	0.173
{\rm log}_{10}(\tau_{AGN})\,	1.020	1.542	1.942

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-3.454	-2.098	-1.512
0.03-0.10 Gyr	-2.760	-1.538	-0.775
0.10-0.33 Gyr	-1.823	-1.032	-0.405
0.33-1.07 Gyr	-1.610	-0.973	-0.557
1.07-3.50 Gyr	-1.870	-1.056	-0.817
3.50-11.43 Gyr	-2.398	-1.201	-0.953
11.43-12.70 Gyr	-2.562	-1.238	-0.735

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	8.803	9.082	9.285
{\rm log}_{10}({\rm SFR})	-0.865	-0.265	0.227
{\rm log}_{10}({\rm sSFR})	-10.100	-9.410	-8.677
{\rm stellar\ age}	0.645	2.951	5.818

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.353	-0.601	-0.077
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.628	-1.019	-0.318

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.984	1.249	1.536
\delta	-0.113	0.141	0.321
\tau_1/\tau_2	0.680	1.039	1.419
Q_{PAH}	3.198	4.964	6.229
U_{min}	3.355	8.816	16.722
{\rm log}_{10}(\gamma_e)\,	-2.918	-1.754	-1.069

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-1.437	-0.970	-0.645
{\rm log}_{10}(\tau_{AGN})\,	0.740	0.851	1.081

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-1.223	-0.417	-0.076
0.03-0.10 Gyr	-1.369	-0.275	0.350
0.10-0.33 Gyr	-1.282	-0.226	0.280
0.33-1.07 Gyr	-1.787	-0.407	0.116
1.07-3.50 Gyr	-3.322	-0.981	-0.482
3.50-11.43 Gyr	-4.278	-1.443	-0.744
11.43-12.70 Gyr	-4.449	-1.508	-0.612