2025chg

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Information

Transient

Name: AT2025chg
Right ascension: 9h48m51.40s
Declination: 69d47m24.02s
Discovery Date: Feb. 21, 2025, 10 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.064

Host

Name: 2025chg
Right ascension: 9h48m51.09s
Declination: 69d47m24.12s
Redshift: None
Photometric Redshift: 0.171

Processing Status

Task Name	Status	Time taken (s)	Warning Flag
Host match	processed	1.92
Cutout download	processed	12.93
Global aperture construction	processed	0.6
Local aperture photometry	processed	4.23
Global aperture photometry	processed	4.33
Validate local photometry	no valid phot	0.02
Validate global photometry	processed	13.02
Host information	processed	0.08
Global host SED inference	processed	392.11
Local host SED inference	not processed	None
Transient information	processed	0.0
Transient MWEBV	processed	0.04
Host MWEBV	processed	0.08
Processing status	blocked	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) = 9h48m51.40s, 69d47m24.02s
semi major axis, semi minor axis (arcsec) = 0.69, 0.69
angle (degrees, anti-clockwise from east) = 0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys

Aperture details

RA, DEC (J2000) = 9h48m51.06s, 69d47m24.36s
semi major axis, semi minor axis (arcsec) = 4.63, 3.29
angle (degrees, anti-clockwise from east) = -170.96

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
SDSS_u	17.03	3.7	20.822	0.236	AB
SDSS_g	56.23	2.25	19.525	0.043	AB
PanSTARRS_g	56.43	1.24	19.521	0.024	AB
SDSS_r	121.64	3.33	18.687	0.030	AB
PanSTARRS_r	121.7	1.48	18.687	0.013	AB
SDSS_i	177.61	4.29	18.276	0.026	AB
PanSTARRS_i	171.88	1.32	18.312	0.008	AB
PanSTARRS_z	193.94	4.05	18.181	0.023	AB
SDSS_z	236.55	10.54	17.965	0.048	AB
PanSTARRS_y	187.86	9.67	18.215	0.056	AB
2MASS_J	333.34	118.18	16.698	0.385	Vega
2MASS_H	220.65	192.41	16.673	0.947	Vega
2MASS_K	282.45	211.92	15.935	0.815	Vega
WISE_W1	159.53	23.27	15.694	0.158	Vega
WISE_W2	117.28	24.69	15.388	0.229	Vega
WISE_W3	284.81	79.26	12.590	0.302	Vega
WISE_W4	578.59	400.31	10.374	0.751	Vega

Imaging data

Spectral Energy Distribution

Host SED inference

Local parameter details

Documentation

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.281	10.406	10.493
{\rm log}_{10}({\rm SFR})	-0.447	0.120	0.521
{\rm log}_{10}({\rm sSFR})	-10.874	-10.304	-9.869
{\rm stellar\ age}	5.005	6.534	7.750

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.367	-1.046	-0.780
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.471	-0.532	-0.019

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.207	0.345	0.508
\delta	-0.788	-0.471	-0.104
\tau_1/\tau_2	0.619	0.978	1.344
Q_{PAH}	0.602	1.637	3.599
U_{min}	2.735	7.646	14.416
{\rm log}_{10}(\gamma_e)\,	-3.166	-2.319	-1.277

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-3.951	-2.605	-1.717
{\rm log}_{10}(\tau_{AGN})\,	0.913	1.309	1.788

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.211	0.150	0.399
0.03-0.10 Gyr	-0.931	0.091	0.586
0.10-0.32 Gyr	-1.017	0.049	0.565
0.32-1.02 Gyr	-0.965	0.010	0.462
1.02-3.27 Gyr	-0.358	0.345	0.671
3.27-10.46 Gyr	0.157	0.567	0.746
10.46-11.62 Gyr	-0.233	0.552	1.160