TNS Classification Report No. 23679 [ 2026TNSCR2036....1A ]
Date Received (UTC): 2026-05-10 16:40:09 Sender: Andrea Reguitti
Group: Padova-Asiago
Vittorio Andreoli (UniTn), Deborah Carli (UniPd), Andrea Farina (UniPd), Paolo Ochner (UniPd), Claudio Balcon (ISSP), Andrea Reguitti (INAF-OAPd) report/s a classification of object: AT 2026lxf
Type: CV
Remarks: A low-resolution spectrum was obtained with the 1.22-m Galilei telescope and B&C spectrograph (dispersion 2.25 Å/pixel) located in Asiago (Italy) on 2026-05-9.948 UT. The spectrum shows a blue continuum without Balmer lines, instead there are He I emissions 706.5 and 667.8 nm and He I absorption at 587.6; 447.1; 438.8; 414.4; 402.6; 381.9; 370.5 and 363.4 nm. A possible progenitor was found in GAIA DR3 database (Gaia collaboration et al. 2023) DR3 1261910766509656448 with an estimated g-mag 21.2 ± 0.1 that means Δmag ≈ 7.3.These characteristics are consistent with a Helium-rich cataclysmic variable. We propose to classify this target as a Helium-rich dwarf nova.
The following Classification spectrum was provided:
Obsdate: 2026-05-09 22:45:07
Instrument: BC-Asi
Telescope: Asiago Galileo Telescope
Details of the object and its spectra can be viewed here: https://sandbox.wis-tns.org/object/2026lxf
Date Received (UTC): 2026-05-10 16:40:09 Sender: Andrea Reguitti
Group: Padova-Asiago
Vittorio Andreoli (UniTn), Deborah Carli (UniPd), Andrea Farina (UniPd), Paolo Ochner (UniPd), Claudio Balcon (ISSP), Andrea Reguitti (INAF-OAPd) report/s a classification of object: AT 2026lxf
Type: CV
Remarks: A low-resolution spectrum was obtained with the 1.22-m Galilei telescope and B&C spectrograph (dispersion 2.25 Å/pixel) located in Asiago (Italy) on 2026-05-9.948 UT. The spectrum shows a blue continuum without Balmer lines, instead there are He I emissions 706.5 and 667.8 nm and He I absorption at 587.6; 447.1; 438.8; 414.4; 402.6; 381.9; 370.5 and 363.4 nm. A possible progenitor was found in GAIA DR3 database (Gaia collaboration et al. 2023) DR3 1261910766509656448 with an estimated g-mag 21.2 ± 0.1 that means Δmag ≈ 7.3.These characteristics are consistent with a Helium-rich cataclysmic variable. We propose to classify this target as a Helium-rich dwarf nova.
The following Classification spectrum was provided:
Obsdate: 2026-05-09 22:45:07
Instrument: BC-Asi
Telescope: Asiago Galileo Telescope
Details of the object and its spectra can be viewed here: https://sandbox.wis-tns.org/object/2026lxf