TNS Classification Report No. 21802 [ 2025TNSCR3234....1R ]

Date Received (UTC): 2025-08-16 14:30:46
Sender: Vittorio Andreoli
Group: None

Ottaviani.R., Andreoli.V., Balcon.C., Ochner.P report/s a classification of object: AT 2025tzw

Type: CV

Remarks: We obtained from Asiago 1.22-m telescope + B&C spectrograph a low resolution spectrum (2.25 Ang/pix) on 2025/08/16.042 The spectrum shows a blue continuum with Balmer absorption except for H alpha (6562.8 Ang) which is not present in our spectrum, probably filled-up by the disk emission. All the characteristics are typical of CV stars. We propose the classification of TCP J21092606+3548416 as a CV star.

The following Classification spectrum was provided:

Obsdate: 2025-08-16 01:00:29
Instrument: BC-Asi
Telescope: Asiago Galileo Telescope

Remarks: We obtained from Asiago 1.22-m telescope + B&C spectrograph a low resolution spectrum (2.25 Ang/pix) on 2025/08/16.042 The spectrum shows a blue continuum with Balmer absorption except for H alpha (6562.8 Ang) which is not present in our spectrum, probably filled-up by the disk emission. All the characteristics are typical of CV stars. We propose the classification of TCP J21092606+3548416 as a CV star.

Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025tzw