2025xsm

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Information

Transient

Name: AT2025xsm
Right ascension: 4h18m27.63s
Declination: -54d38m25.29s
Discovery Date: Sept. 13, 2025, 9:22 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.007

Host

Name:
Right ascension: 4h18m27.91s
Declination: -54d38m25.79s
Redshift: None
Photometric Redshift: 0.056
 

Processing Status

Cutout download
 Cutout download
processed
 status
Transient information
Transient information
processed
 status
Transient MWEBV
Transient MWEBV
processed
 status
Host match
 Host match
processed
 status
Host information
Host information
processed
 status
Local aperture photometry
 Local aperture photometry
processed
 status
Validate local photometry
 Validate local photometry
no valid phot
 status
Local host SED inference
Local host SED inference
not processed
 status
Host MWEBV
Host MWEBV
processed
 status
Global host SED inference
Global host SED inference
processed
 status
Validate global photometry
Validate global photometr...
processed
 status
Global aperture construction
 Global aperture construct...
processed
 status
Global aperture photometry
 Global aperture photometr...
processed
 status
Task Name Status Time taken (s) Warning Flag
Host match processed 7.67
Cutout download processed 3.94
Global aperture construction processed 0.13
Local aperture photometry processed 0.81
Global aperture photometry processed 0.7
Validate local photometry no valid phot 0.01
Validate global photometry processed 0.87
Host information processed 0.11
Global host SED inference processed 1012.09
Local host SED inference not processed None
Transient information processed 0.0
Transient MWEBV processed 0.04
Host MWEBV processed 0.04
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) = 4h18m27.63s, -54d38m25.29s
semi major axis, semi minor axis (arcsec) = 1.83, 1.83
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) = 4h18m27.92s, -54d38m25.83s
semi major axis, semi minor axis (arcsec) = 7.68, 5.9
angle (degrees, anti-clockwise from east) = -88.57

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 16.17 0.81 20.878 0.055 AB
2MASS_J 4342.26 216.82 13.911 0.054 Vega
2MASS_H 4298.76 293.9 13.449 0.074 Vega
WISE_W1 1766.43 16.72 13.083 0.010 Vega
WISE_W4 208.47 200.62 11.482 1.045 Vega
 

Imaging data

 

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})\, 10.243 10.513 10.726
{\rm log}_{10}({\rm SFR}) -0.713 0.126 0.759
{\rm log}_{10}({\rm sSFR}) -11.286 -10.397 -9.631
{\rm stellar\ age} 4.548 7.550 11.804

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.165 -0.661 -0.287
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.402 -0.669 0.056

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.210 0.385 0.574
\delta -0.911 -0.708 -0.382
\tau_1/\tau_2 0.257 0.681 1.273
Q_{PAH} 0.271 1.060 2.532
U_{min} 2.122 6.942 14.699
{\rm log}_{10}(\gamma_e)\, -3.525 -2.641 -1.026

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.361 -3.135 -1.644
{\rm log}_{10}(\tau_{AGN})\, 1.140 1.626 1.965

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -1.047 0.019 0.643
0.03-0.10 Gyr -1.724 -0.105 0.840
0.10-0.33 Gyr -2.562 -0.368 0.442
0.33-1.08 Gyr -3.411 -0.213 0.625
1.08-3.56 Gyr -2.438 0.158 0.717
3.56-11.70 Gyr -0.810 0.378 0.771
11.70-13.00 Gyr -0.346 0.710 1.818