2025aciv

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Information

Transient

Name: AT2025aciv
Right ascension: 1h18m18.99s
Declination: 4d45m03.50s
Discovery Date: Oct. 18, 2025, 4:06 p.m.
Classification: None
Redshift: None
MW E(B-V): 0.024

Host

Name:
Right ascension: 1h18m19.24s
Declination: 4d45m05.96s
Redshift: None
Photometric Redshift: 0.141

Processing Status: blocked

Task Name	Status	Time taken (s)
Cutout download	processed	7.32
Transient MWEBV	processed	0.04
Host match	processed	5.42
Host information	processed	0.15
Host MWEBV	processed	0.04
Global aperture construction	processed	0.63
Global aperture photometry	processed	4.44
Validate global photometry	processed	12.28
Global host SED inference	processed	494.29
Local aperture photometry	processed	4.14
Validate local photometry	no valid phot	0.02
Local host SED inference	not processed	None

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) = 1h18m18.99s, 4d45m03.50s
semi major axis, semi minor axis (arcsec) = 0.81, 0.81
angle (degrees, anti-clockwise from east) = 0.0

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

Data not available

Aperture details

RA, DEC (J2000) = 1h18m19.23s, 4d45m06.38s
semi major axis, semi minor axis (arcsec) = 9.42, 7.26
angle (degrees, anti-clockwise from east) = -95.37

Filter	Flux {\rm (\mu Jy)}	Flux error {\rm (\mu Jy)}	Mag	Mag error	Mag sys
GALEX_FUV	20.13	1.02	20.640	0.055	AB
GALEX_NUV	28.77	0.84	20.253	0.032	AB
SDSS_u	92.41	6.59	18.986	0.077	AB
PanSTARRS_g	220.12	1.91	18.043	0.009	AB
PanSTARRS_r	345.89	2.5	17.553	0.008	AB
PanSTARRS_i	466.96	1.77	17.227	0.004	AB
PanSTARRS_z	537.9	5.28	17.073	0.011	AB
PanSTARRS_y	598.99	12.53	16.956	0.023	AB
2MASS_J	1033.56	192.28	15.469	0.202	Vega
2MASS_H	877.2	312.92	15.175	0.387	Vega
2MASS_K	292.44	360.81	15.897	1.340	Vega
WISE_W1	345.33	15.18	14.855	0.048	Vega
WISE_W2	247.78	18.74	14.576	0.082	Vega
WISE_W3	486.56	88.45	12.008	0.197	Vega
WISE_W4	65.44	479.47	12.740	7.955	Vega

Imaging data

Click the image to load the interactive plot.

Spectral Energy Distribution

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})\,	10.421	10.494	10.601
{\rm log}_{10}({\rm SFR})	0.794	1.070	1.327
{\rm log}_{10}({\rm sSFR})	-9.714	-9.437	-9.152
{\rm stellar\ age}	5.283	6.334	7.775

Metallicity parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot})	-0.928	-0.628	-0.464
{\rm log}_{10}(Z_{gas}/Z_{\odot})\,	-1.513	0.047	0.384

Dust parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
\tau_2	0.156	0.232	0.375
\delta	-0.911	-0.695	-0.426
\tau_1/\tau_2	0.537	0.958	1.373
Q_{PAH}	0.356	1.002	2.050
U_{min}	2.474	7.430	14.927
{\rm log}_{10}(\gamma_e)\,	-3.205	-2.391	-1.562

AGN parameters

Parameter	Lower (16%)	Median (50%)	Upper (84%)
{\rm log}_{10}(f_{AGN})\,	-4.090	-2.791	-1.856
{\rm log}_{10}(\tau_{AGN})\,	0.972	1.412	1.865

Binned star formation history

Lookback time	Lower (16%)	Median (50%)	Upper (84%)
0.00-0.03 Gyr	-0.991	0.025	0.311
0.03-0.10 Gyr	0.933	1.221	1.483
0.10-0.32 Gyr	-0.193	0.723	1.044
0.32-1.04 Gyr	-0.652	0.376	0.663
1.04-3.34 Gyr	-0.255	0.472	0.728
3.34-10.77 Gyr	0.243	0.594	0.745
10.77-11.96 Gyr	0.147	0.701	1.306