Exploratory Spectroscopy of Magnetic Cataclysmic Variables Candidates and Other Variable Objects. II

Autor(es)

Oliveira, A. S. ^[1] ; Rodrigues, C. V. ^[2] ; Martins, M. ^[1] ; Palhares, M. S. ^[1] ; Silva, K. M. G. ^{[3, 4]} ; Lima, I. J. ^{[2, 5]} ; Jablonski, F. J. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP - Brazil

^[2] Inst Nacl Pesquisas Espaciais, Div Astrofis, BR-12227010 Sao Jose Dos Campos, SP - Brazil

^[3] European Southern Observ, Alonso Cordova 3107, Santiago - Chile

^[4] Gemini Observ, Casilla 603, La Serena - Chile

^[5] Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 - USA

• Tipo de documento: Artigo Científico
• Fonte: ASTRONOMICAL JOURNAL; v. 159, n. 3 MAR 2020.
• Citações Web of Science: 0

Resumo

This is the second paper of a series presenting our search for magnetic cataclysmic variables (mCVs) among candidates selected mostly from the Catalina Real-Time Transient Survey. We present the identification spectra, obtained at the SOAR Telescope, as well as magnitudes and Gaia distances for 45 objects. Of these, 39 objects are identified as CVs, from which 8 targets show observational characteristics of mCVs, being 7 polars and 1 intermediate polar. The remaining 31 CVs in our sample are probably non-magnetic systems, in low (22 systems) or high (9 systems) accretion states. Six targets of the sample are not CVs (5 active galactic nuclei and 1 T Tauri star). Among the 8 objects with mCV spectra, 6 are new classifications. Three polars were observed in low accretion state, either revealing photospheric features of the secondary star and allowing the estimation of their spectral type, or presenting Hi3 Zeeman components associated to the white dwarf (WD) magnetic field. In addition to the results obtained in the first paper of the series, and depending on the confirmation of these classifications by observational follow-up, our results would increase the sample of known polars by about 9%. (AU)

• Processo FAPESP: 18/05420-1 - Acreção magnética em variáveis cataclísmicas: os objetos do tipo SW~Sextantis e busca por novos candidatos
• Beneficiário: Isabel de Jesus Lima
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
• Beneficiário: Manuel Máximo Bastos Malheiro de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/20309-7 - Descoberta e caracterização de novas variáveis cataclísmicas magnéticas
• Beneficiário: Alexandre Soares de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Regular