2026chb results

2026chb results

Information

Transient

Name:	`AT2026chb`
Right ascension:	`4h28m06.89s`
Declination:	`0d53m45.24s`
Discovery Date:	`Feb. 4, 2026, 3:06 a.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):	`0.098`

Host

Name:
Right ascension:	`4h28m06.83s`
Declination:	`0d53m52.59s`
Redshift:	`None`
Photometric Redshift:	`0.117`

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 SDSS_i SDSS_r SDSS_u SDSS_z SDSS_g DES_g DES_r DES_z	GALEX_NUV GALEX_FUV DES_i DES_Y

Processing Status: blocked

Task Name	Status	Time (s)
Cutout download	processed	17.94
Transient MWEBV	processed	0.12
Host match	processed	7.08
Host information	processed	0.14
Host MWEBV	processed	0.11
Global aperture construction	processed	0.64
Global aperture photometry	processed	6.06
Validate global photometry	processed	18.45
Global host SED inference	processed	442.46
Local aperture photometry	processed	6.04
Validate local photometry	processed	0.02
Local host SED inference	not enough filters	24.26

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	4h28m06.89s, 0d53m45.24s
semi major axis, semi minor axis (arcsec):	0.94, 0.94
angle (degrees, anti-clockwise from east):	0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
DES_z	4.06	0.39	22.379	0.105	AB

Aperture details

RA, DEC (J2000):	4h28m06.82s, 0d53m53.60s
semi major axis, semi minor axis (arcsec):	9.43, 4.98
angle (degrees, anti-clockwise from east):	-4.84

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	35.91	6.43	20.012	0.194	AB
SDSS_g	219.62	4.44	18.046	0.022	AB
DES_g	240.2	0.71	17.949	0.003	AB
PanSTARRS_g	244.41	2.12	17.930	0.009	AB
SDSS_r	614.74	7.25	16.928	0.013	AB
PanSTARRS_r	618.21	2.72	16.922	0.005	AB
DES_r	691.45	2.13	16.801	0.003	AB
SDSS_i	1023.79	9.98	16.374	0.011	AB
PanSTARRS_i	1041.43	2.67	16.356	0.003	AB
PanSTARRS_z	1431.27	6.21	16.011	0.005	AB
SDSS_z	1514.47	21.53	15.949	0.015	AB
DES_z	1547.22	5.73	15.926	0.004	AB
PanSTARRS_y	1712.03	12.4	15.816	0.008	AB
2MASS_J	2196.99	212.59	14.651	0.105	Vega
2MASS_H	2851.75	275.38	13.895	0.105	Vega
2MASS_K	3462.57	358.09	13.214	0.112	Vega
WISE_W3	1196.52	94.31	11.031	0.086	Vega
WISE_W4	853.52	558.88	9.952	0.711	Vega

Host SED inference

Local parameter details

Documentation

Data not available

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	11.117	11.194	11.332
{\rm log}_{10}({\rm SFR})	-1.935	-0.517	0.330
{\rm log}_{10}({\rm sSFR})	-13.203	-11.701	-10.782
{\rm stellar\ age}	7.170	8.264	11.558

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.976	-0.510	-0.258
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.715	-0.810	0.169

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.389	0.611	0.879
\delta	-0.649	-0.254	0.041
\tau_1/\tau_2	0.493	0.902	1.329
Q_{PAH}	0.465	1.164	2.235
U_{min}	1.831	6.210	13.726
{\rm log}_{10}(\gamma_e)\,	-3.634	-3.042	-1.787

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.238	-2.898	-1.512
{\rm log}_{10}(\tau_{AGN})\,	0.871	1.185	1.793

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-2.325	-0.453	0.335
0.03-0.10 Gyr	-3.197	-0.707	0.328
0.10-0.32 Gyr	-3.595	-0.868	0.227
0.32-1.05 Gyr	-3.694	-0.879	0.265
1.05-3.40 Gyr	-2.372	-0.091	0.961
3.40-11.02 Gyr	-0.517	1.249	1.475
11.02-12.24 Gyr	0.878	1.779	2.467