2025xsi

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Information

Transient

Name: AT2025xsi
Right ascension: 15h19m07.45s
Declination: -2d51m39.51s
Discovery Date: Sept. 7, 2025, 3:17 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.116

Host

Name:
Right ascension: 15h19m07.44s
Declination: -2d51m38.08s
Redshift: None
Photometric Redshift: 0.128
 

Processing Status: blocked

Task Name Status Time taken (s) Warning Flag
Cutout download processed 11.32
Transient MWEBV processed 0.15
Host match processed 8.09
Host information processed 0.11
Host MWEBV processed 0.04
Global aperture construction processed 0.67
Global aperture photometry processed 5.26
Validate global photometry processed 14.89
Global host SED inference processed 382.14
Local aperture photometry processed 5.4
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) = 15h19m07.45s, -2d51m39.51s
semi major axis, semi minor axis (arcsec) = 0.88, 0.88
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) = 15h19m07.44s, -2d51m37.88s
semi major axis, semi minor axis (arcsec) = 3.77, 2.04
angle (degrees, anti-clockwise from east) = -16.54

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 0.55 0.54 24.550 1.072 AB
GALEX_NUV 2.05 0.44 23.121 0.233 AB
SDSS_g 21.67 1.64 20.560 0.082 AB
DES_g 20.89 0.32 20.600 0.016 AB
PanSTARRS_g 22.76 0.68 20.507 0.033 AB
PanSTARRS_r 35.63 0.82 20.020 0.025 AB
DES_r 39.12 0.48 19.919 0.013 AB
SDSS_i 50.51 2.89 19.642 0.062 AB
PanSTARRS_i 49.46 1.11 19.664 0.024 AB
PanSTARRS_z 57.36 1.84 19.503 0.035 AB
DES_z 62.58 2.91 19.409 0.050 AB
PanSTARRS_y 79.14 3.57 19.154 0.049 AB
2MASS_J 181.36 85.7 17.359 0.513 Vega
2MASS_H -5.68 113.47 Vega
2MASS_K -109.6 164.92 Vega
WISE_W1 40.62 6.93 17.179 0.185 Vega
WISE_W2 20.34 10.3 17.290 0.550 Vega
WISE_W3 54.07 38.24 14.394 0.768 Vega
WISE_W4 457.06 307.59 10.630 0.731 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})\, 9.276 9.460 9.569
{\rm log}_{10}({\rm SFR}) -0.823 -0.152 0.358
{\rm log}_{10}({\rm sSFR}) -10.270 -9.610 -9.019
{\rm stellar\ age} 1.941 4.589 6.026

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.884 -0.307 -0.031
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.507 -0.213 0.283

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.228 0.464 0.748
\delta -0.524 -0.182 0.077
\tau_1/\tau_2 0.653 1.059 1.442
Q_{PAH} 0.628 1.883 3.751
U_{min} 2.868 8.445 16.099
{\rm log}_{10}(\gamma_e)\, -2.524 -1.571 -0.584

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -3.798 -1.769 -0.850
{\rm log}_{10}(\tau_{AGN})\, 1.113 1.509 1.876

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.373 -0.667 -0.335
0.03-0.10 Gyr -0.860 -0.048 0.502
0.10-0.32 Gyr -0.251 0.163 0.528
0.32-1.04 Gyr -0.744 -0.108 0.197
1.04-3.37 Gyr -1.343 -0.461 -0.179
3.37-10.91 Gyr -1.679 -0.651 -0.380
10.91-12.12 Gyr -1.806 -0.666 -0.110