Access to Astronomical Catalogues

← Click to display the menu
J/AJ/153/144   Spectroscopy of mCVs and other variable objects (Oliveira+, 2017)

Exploratory spectroscopy of magnetic cataclysmic variables candidates and other variable objects. Oliveira A.S., Rodrigues C.V., Cieslinski D., Jablonski F.J., Silva K.M.G., Almeida L.A, Rodriguez-Ardila A., Palhares M.S. <Astron. J. 153, 144 (2017)> =2017AJ....153..144O (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, cataclysmic ; Spectroscopy Keywords: binaries: close - novae - cataclysmic variables - stars: dwarf novae - stars: variables: general - techniques: spectroscopic Abstract: The increasing number of synoptic surveys made by small robotic telescopes, such as the photometric Catalina Real-Time Transient Survey (CRTS), provides a unique opportunity to discover variable sources and improves the statistical samples of such classes of objects. Our goal is the discovery of magnetic Cataclysmic Variables (mCVs). These are rare objects that probe interesting accretion scenarios controlled by the white-dwarf magnetic field. In particular, improved statistics of mCVs would help to address open questions on their formation and evolution. We performed an optical spectroscopy survey to search for signatures of magnetic accretion in 45 variable objects selected mostly from the CRTS. In this sample, we found 32 CVs, 22 being mCV candidates, 13 of which were previously unreported as such. If the proposed classifications are confirmed, it would represent an increase of 4% in the number of known polars and 12% in the number of known IPs. A fraction of our initial sample was classified as extragalactic sources or other types of variable stars by the inspection of the identification spectra. Despite the inherent complexity in identifying a source as an mCV, variability-based selection, followed by spectroscopic snapshot observations, has proved to be an efficient strategy for their discoveries, being a relatively inexpensive approach in terms of telescope time. Description: This catalog contains the spectra of the 45 variable objects, which was observed with SOAR 4.1m telescope at Cerro Pachon, Chile, and the Perkin- Elmer 1.6m telescope at Observatorio do Pico dos Dias (OPD-LNA/MCTI), locate in Brazopolis-MG, Brasil. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 124 45 List of objects observed sp/* 30 47 Individual spectra of objects observed in ascii fits/* 0 47 Individual spectra as fits files
See also: J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009) J/MNRAS/441/1186 : Cataclysmic variables from CRTS (Drake+, 2014) J/MNRAS/443/3174 : 72 faint CV candidates in CRTS (Breedt+, 2014) J/A+A/573/A61 : Photometry of new eclipsing CVs (Southworth+, 2015) J/MNRAS/456/4441 : Cataclysmic variables outburst catalogue (Coppejans+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Name Object name 25- 36 A12 --- SName Abreviation name 37- 38 I2 h RAh Right ascension (J2000) 40- 41 I2 min RAm Right Ascension (J2000) 43- 44 I2 s RAs Right ascension (J2000) 46 A1 --- DE- Declination sign (J2000) 47- 48 I2 deg DEd Declination (J2000) 50- 51 I2 arcmin DEm Declination (J2000) 53- 54 I2 arcsec DEs Declination (J2000) 56- 73 A18 --- Obs.Date ? Date of observation(s) 75- 78 A4 --- Tel ? Telescope used for observations 80- 83 I4 s ExpTime ? Exposure time 85- 88 A4 --- Type Type of objects (1) 90-105 A16 --- FileName Name of the fits spectrum file in subdirectory fits 107-124 A18 --- FileName2 Name of the second fits spectrum file for CSS2108-03 and USNO0825-18 in subdirectory fits
Note (1): Classification type of objects as follows: P = polar candidate D = disk system D/IP = IP candidate HA = system with high-state accretion disk N = Nova RRL = RR Lyrae star PRG = Mira or low-amplitude Pulsating Red Giants star E = extragalactic source
Byte-by-byte Description of file: sp/*
Bytes Format Units Label Explanations
1- 16 F16.11 0.1nm lambda Wavelength for each pixel 17- 30 E14.7 mW/m2 Flux Spectral flux density
Acknowledgements: Matheus Soares Palhares, matheus_spalhares(at)hotmail.com
(End) Matheus Soares Palhares [IP&D, UNIVAP], Patricia Vannier [CDS] 09-Mar-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact