2025gcs results

2025gcs results

Information

Transient

Name:	`AT2025gcs`
Right ascension:	`21h49m06.89s`
Declination:	`33d05m52.31s`
Discovery Date:	`March 25, 2025, 12:25 p.m.`
Classification:	`None`
Redshift:	`None`
MW E(B-V):	`0.139`

Host

Name:	`2025gcs`
Right ascension:	`21h49m06.87s`
Declination:	`33d05m52.47s`
Redshift:	`None`
Photometric Redshift:	`0.105`

Cutout Download Report

Downloaded	Unavailable
2MASS_H 2MASS_J 2MASS_K WISE_W1 WISE_W2 WISE_W3 WISE_W4 GALEX_NUV PanSTARRS_g PanSTARRS_r PanSTARRS_i PanSTARRS_z PanSTARRS_y	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	3.84
Transient MWEBV	processed	0.04
Host match	processed	3.36
Host information	processed	0.08
Host MWEBV	processed	0.04
Global aperture construction	processed	0.66
Global aperture photometry	processed	4.23
Validate global photometry	processed	11.78
Global host SED inference	processed	655.04
Local aperture photometry	processed	4.11
Validate local photometry	processed	0.02
Local host SED inference	processed	799.08

Imaging data

Spectral Energy Distribution

Aperture Photometry

Aperture details

RA, DEC (J2000):	21h49m06.89s, 33d05m52.31s
semi major axis, semi minor axis (arcsec):	1.04, 1.04
angle (degrees, anti-clockwise from east):	0.0

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
PanSTARRS_y	281.76	2.16	17.775	0.008	AB

Aperture details

RA, DEC (J2000):	21h49m06.86s, 33d05m52.55s
semi major axis, semi minor axis (arcsec):	5.48, 4.77
angle (degrees, anti-clockwise from east):	-27.39

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
PanSTARRS_g	168.25	1.05	18.335	0.007	AB
PanSTARRS_z	707.29	3.74	16.776	0.006	AB
PanSTARRS_y	1006.8	10.34	16.393	0.011	AB
2MASS_H	1516.11	260.19	14.581	0.186	Vega

Host SED inference

Local parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	9.633	10.031	10.278
{\rm log}_{10}({\rm SFR})	0.036	0.511	1.046
{\rm log}_{10}({\rm sSFR})	-10.134	-9.517	-8.739
{\rm stellar\ age}	2.481	6.395	9.140

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-1.215	-0.485	0.028
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.218	-0.561	0.068

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.469	0.822	1.178
\delta	-0.747	-0.445	0.007
\tau_1/\tau_2	0.467	0.959	1.418
Q_{PAH}	0.715	2.366	4.878
U_{min}	2.992	8.768	16.072
{\rm log}_{10}(\gamma_e)\,	-3.445	-2.200	-0.940

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.311	-2.938	-1.003
{\rm log}_{10}(\tau_{AGN})\,	0.916	1.342	1.872

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	0.174	0.640	1.114
0.03-0.10 Gyr	-1.257	0.192	1.054
0.10-0.32 Gyr	-2.068	-0.415	0.498
0.32-1.06 Gyr	-2.550	-0.422	0.289
1.06-3.43 Gyr	-2.238	-0.295	0.282
3.43-11.16 Gyr	-1.580	-0.047	0.349
11.16-12.40 Gyr	-1.366	0.129	1.047

Global parameter details

Documentation

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\,	10.328	10.614	10.777
{\rm log}_{10}({\rm SFR})	0.759	1.212	1.778
{\rm log}_{10}({\rm sSFR})	-9.930	-9.407	-8.485
{\rm stellar\ age}	0.694	4.319	7.147

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.939	-0.180	0.093
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-0.735	-0.232	0.172

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.849	1.382	1.970
\delta	-0.378	-0.101	0.227
\tau_1/\tau_2	0.417	0.865	1.405
Q_{PAH}	0.564	2.220	4.680
U_{min}	2.775	7.673	15.385
{\rm log}_{10}(\gamma_e)\,	-3.294	-1.596	-0.471

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.642	-3.676	-1.222
{\rm log}_{10}(\tau_{AGN})\,	0.972	1.560	1.975

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	0.802	1.215	1.560
0.03-0.10 Gyr	0.267	1.161	1.878
0.10-0.32 Gyr	-0.616	0.783	1.516
0.32-1.06 Gyr	-1.122	0.700	1.422
1.06-3.43 Gyr	-1.876	0.504	1.000
3.43-11.16 Gyr	-2.667	0.358	0.876
11.16-12.40 Gyr	-2.883	0.256	1.109