J/A+A/664/A165 Quiescent CV TUVO-21acq SALT spectrum (Modiano+, 2022)
TUVO-21acq: A new cataclysmic variable discovered through a UV outburst.
Modiano D., Wijnands R., Buckley D.A.H., Gromadzki M., Verberne S.,
van Etten M.
<Astron. Astrophys. 664, A165 (2022)>
=2022A&A...664A.165M 2022A&A...664A.165M (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, cataclysmic ; Balmer lines ; Accretion ; Spectroscopy
Keywords: methods: data analysis - methods: observational -
ultraviolet: stars - binaries: close - stars: dwarf novae - novae -
cataclysmic variables
Abstract:
We present the discovery of TUVO-21acq, a new transient which we
detected in the UV using data from the UVOT aboard Swift. We detected
two separate outbursts and used the UVOT data to constrain source
properties, focusing on the amplitudes and timescales of the
outbursts. To further characterise the source, we obtained an optical
spectrum during quiescence with the Southern African Large Telescope
(SALT; Buckley et al., 2006). The spectrum exhibited hydrogen Balmer
series and helium emission lines, and a flat overall spectral shape.
We confirm the nature of the source as an accreting white dwarf which
underwent DN outburst based on photometric and spectroscopic
properties.
Description:
The SALT spectrum is provided. It was obtained on 9 April 2021 with
the Robert Stobie Spectrograph (Burgh et al., 2003, SPIE Conf. Ser.,
4841, 1463) mounted on SALT. The PG300 grating was used (370-800nm),
the slit width was 1.25", and the resulting resolution was 420. The
exposure time was 1200s.
Objects:
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RA (2000) DE Designation(s)
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13 05 44.72 -49 32 58.3 TUVO-21acq = Gaia EDR3 6084568022360459136
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 90 1 Information on SALT spectrum
fits/* . 1 TUVO-21acq SALT spectrum
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000)
4- 5 I2 min RAm Right ascension (J2000)
7- 11 F5.2 s RAs Right ascension (J2000)
12 A1 --- DE- Declination sign (J2000)
13- 14 I2 deg DEd Declination (J2000)
16- 17 I2 arcmin DEm Declination (J2000)
19- 22 F4.1 arcsec DEs Declination (J2000)
24- 27 I4 --- Nx Number of pixels along X-axis
29 I1 --- Ny Number of pixels along Y-axis
31- 34 I4 0.1nm blambda Lower value of wavelength interval
36- 39 I4 0.1nm Blambda Upper value of wavelength interval
41- 47 F7.5 0.1nm dlambda Wavelength resolution
49- 50 I2 Kibyte size Size of FITS file
52- 65 A14 --- FileName Name of FITS file, in subdirectory fits
67- 90 A24 --- Title Title of the FITS file
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Acknowledgements:
David Modiano, d.modiano(at)uva.nl
References:
Buckley D.A.H., Swart G.P., & Meiring J.G., 2006, in Society of
Photo-Optical Instrumentation Engineers (SPIE) Conference Series,
Vol. 6267, 62670Z
Burgh E.B., Nordsieck K.H., Kobulnicky H.A., et al., 2003, in Society
of Photo-Optical Instrumentation Engineers (SPIE) Conference Series,
Vol. 4841, Instrument Design and Performance for Optical/Infrared
Ground-based Telescopes, ed. M. Iye & A. F. M. Moorwood, 1463-1471
(End) Patricia Vannier [CDS] 18-Aug-2022