TNS Astronomical Transient Report No. 146282 [ 2022TNSTR1145....1R ]
Date Received (UTC): 2022-05-01 01:21:04
Date made public:
Sender: Walter Robledo
Reporting Group: None Discovery Data Source: None
Walter Robledo report/s the discovery of a new astronomical transient.
IAU Designation: AT 2020afbs
Coordinates (J2000): RA = 01:11:47.180 (17.946583) DEC = -83:37:51.55 (-83.630986)
Discovery date: 2020-10-11 20:09:35.000 (JD=2459134.3399884)
Remarks: Hello! This that you see in the images could be something related to something like a Micronova based on a Brown Dwarf or is it just a false detection? I need help answering that question. I base it on 4 DECam images. Unfortunately, only the one from 2021 enjoys an excellent seeing. There seems to be an expulsion of the outer layers, or is it just a visual effect due to the difference in depth between the images? There are structures in the 2020 i band image that are not visible in 2021 image (this seems to contradict the depth difference conjecture.). This decided me to file the report. If the expulsion is real, by the time elapsed between images, the object should be relatively close to us. If so, could red Micronova explain the low magnitude despite the assumed closeness? Previously, the magnitude pike of the object appears to have in the WISE W2 band. Best regards; Walter
Photometry
Discovery (first detection):
Discovery date: 2020-10-11 20:09:35.000
Flux: 21.1 Other
Filter: i-Sloan
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope
Remarks: DECam i filter. Approximate photometry obtained with the Online Astronomical Photometry Tool (i-Sloan filter)
Last non-detection:
Last non-detection date: 2019-11-18 21:15:30
Limiting flux: 25 Other
Filter: Other-
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope
Archival info: Other
Remarks: DECam z filter. I can't obtain acceptable photometry with the means at my disposal.
Details of the new object can be viewed here: https://www.wis-tns.org/object/2020afbs
Date Received (UTC): 2022-05-01 01:21:04
Date made public:
Sender: Walter Robledo
Reporting Group: None Discovery Data Source: None
Walter Robledo report/s the discovery of a new astronomical transient.
IAU Designation: AT 2020afbs
Coordinates (J2000): RA = 01:11:47.180 (17.946583) DEC = -83:37:51.55 (-83.630986)
Discovery date: 2020-10-11 20:09:35.000 (JD=2459134.3399884)
Remarks: Hello! This that you see in the images could be something related to something like a Micronova based on a Brown Dwarf or is it just a false detection? I need help answering that question. I base it on 4 DECam images. Unfortunately, only the one from 2021 enjoys an excellent seeing. There seems to be an expulsion of the outer layers, or is it just a visual effect due to the difference in depth between the images? There are structures in the 2020 i band image that are not visible in 2021 image (this seems to contradict the depth difference conjecture.). This decided me to file the report. If the expulsion is real, by the time elapsed between images, the object should be relatively close to us. If so, could red Micronova explain the low magnitude despite the assumed closeness? Previously, the magnitude pike of the object appears to have in the WISE W2 band. Best regards; Walter
Photometry
Discovery (first detection):
Discovery date: 2020-10-11 20:09:35.000
Flux: 21.1 Other
Filter: i-Sloan
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope
Remarks: DECam i filter. Approximate photometry obtained with the Online Astronomical Photometry Tool (i-Sloan filter)
Last non-detection:
Last non-detection date: 2019-11-18 21:15:30
Limiting flux: 25 Other
Filter: Other-
Instrument: DECAM
Telescope: CTIO - 4-m Victor M. Blanco Telescope
Archival info: Other
Remarks: DECam z filter. I can't obtain acceptable photometry with the means at my disposal.
Details of the new object can be viewed here: https://www.wis-tns.org/object/2020afbs