2025yii

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Information

Transient

Name: AT2025yii
Right ascension: 6h44m20.30s
Declination: -63d43m32.80s
Discovery Date: Sept. 23, 2025, 7:42 a.m.
Classification: None
Redshift: None
MW E(B-V): 0.059

Host

Name: NGC2297
Right ascension: 6h44m24.60s
Declination: -63d43m02.19s
Redshift: 0.011325
Photometric Redshift:
 

Processing Status: completed

Task Name Status Time taken (s) Warning Flag
Cutout download processed 3.56
Transient MWEBV processed 0.18
Host match processed 4.28
Host information processed 0.13
Host MWEBV processed 0.04
Global aperture construction processed 0.13
Global aperture photometry processed 0.74
Validate global photometry processed 0.9
Global host SED inference processed 491.03
Local aperture photometry processed 0.83
Validate local photometry processed 0.01
Local host SED inference processed 523.01
 

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) = 6h44m20.30s, -63d43m32.80s
semi major axis, semi minor axis (arcsec) = 8.62, 8.62
angle (degrees, anti-clockwise from east) = 0.0

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 3.13 2.06 22.662 0.714 AB
GALEX_NUV 7.07 1.68 21.776 0.258 AB
2MASS_J 540.54 247.32 16.173 0.497 Vega
2MASS_H 1074.03 429.16 14.955 0.434 Vega
2MASS_K -390.85 449.0 Vega
WISE_W1 89.36 23.95 16.323 0.291 Vega
WISE_W2 39.73 20.71 16.563 0.566 Vega
WISE_W3 298.31 49.32 12.539 0.180 Vega

Aperture details

RA, DEC (J2000) = 6h44m24.56s, -63d43m01.86s
semi major axis, semi minor axis (arcsec) = 29.43, 14.95
angle (degrees, anti-clockwise from east) = -6.74

Filter Flux {\rm (\mu Jy)} Flux error {\rm (\mu Jy)} Mag Mag error Mag sys
GALEX_FUV 491.75 12.33 17.171 0.027 AB
GALEX_NUV 941.28 9.78 16.466 0.011 AB
2MASS_J 49566.57 606.72 11.267 0.013 Vega
2MASS_H 60914.49 1046.71 10.571 0.019 Vega
WISE_W1 28988.03 80.98 10.045 0.003 Vega
WISE_W2 18026.9 75.56 9.921 0.005 Vega
WISE_W3 90265.37 237.79 6.337 0.003 Vega
WISE_W4 166933.5 2001.91 4.224 0.013 Vega
 

Imaging data

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Spectral Energy Distribution

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Host SED inference


Local parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 7.012 7.534 7.870
{\rm log}_{10}({\rm SFR}) -2.317 -1.855 -1.420
{\rm log}_{10}({\rm sSFR}) -10.012 -9.440 -8.442
{\rm stellar\ age} 1.673 5.952 8.036

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -1.496 -0.558 -0.024
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.334 -0.580 0.125

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.310 0.602 1.034
\delta -0.530 -0.085 0.203
\tau_1/\tau_2 0.471 0.873 1.310
Q_{PAH} 0.369 1.255 2.857
U_{min} 2.897 7.843 14.556
{\rm log}_{10}(\gamma_e)\, -2.935 -1.930 -0.968

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.104 -2.597 -1.281
{\rm log}_{10}(\tau_{AGN})\, 0.986 1.487 1.920

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -2.206 -1.760 -1.351
0.03-0.10 Gyr -3.234 -2.085 -1.406
0.10-0.33 Gyr -4.039 -2.523 -1.873
0.33-1.10 Gyr -4.412 -2.623 -2.048
1.10-3.64 Gyr -4.605 -2.633 -2.144
3.64-12.06 Gyr -4.306 -2.634 -2.075
12.06-13.40 Gyr -4.350 -2.642 -1.804

Global parameter details

Documentation

Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(M_{\ast}/M_{\odot})\, 10.084 10.285 10.439
{\rm log}_{10}({\rm SFR}) -0.164 0.291 0.724
{\rm log}_{10}({\rm sSFR}) -10.491 -10.026 -9.482
{\rm stellar\ age} 5.838 7.870 11.496

Metallicity parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(Z_{\ast}/Z_{\odot}) -0.812 -0.219 0.048
{\rm log}_{10}(Z_{gas}/Z_{\odot})\, -1.689 -0.725 -0.140

Dust parameters
Parameter Lower (16%) Median (50%) Upper (84%)
\tau_2 0.284 0.499 0.862
\delta -0.615 -0.218 0.067
\tau_1/\tau_2 0.322 0.765 1.248
Q_{PAH} 0.389 1.446 3.382
U_{min} 2.367 6.762 13.622
{\rm log}_{10}(\gamma_e)\, -3.638 -2.319 -1.450

AGN parameters
Parameter Lower (16%) Median (50%) Upper (84%)
{\rm log}_{10}(f_{AGN})\, -4.257 -3.044 -1.679
{\rm log}_{10}(\tau_{AGN})\, 1.148 1.681 2.024

Binned star formation history
Lookback time Lower (16%) Median (50%) Upper (84%)
0.00-0.03 Gyr -0.483 0.156 0.559
0.03-0.10 Gyr -0.484 0.261 0.826
0.10-0.33 Gyr -1.580 -0.154 0.490
0.33-1.10 Gyr -2.463 -0.368 0.291
1.10-3.64 Gyr -1.712 -0.107 0.313
3.64-12.06 Gyr -0.543 0.241 0.515
12.06-13.40 Gyr -0.221 0.548 1.438