Identification of DQ Serpentis and DT Serpentis as symbiotic stars*
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, CP 515, 12201–970 São José dos Campos, Brazil
2 Instituto Astronômico e Geofísico, Universidade de São Paulo, CP 9638, 01065–970 São Paulo, Brazil
Send offprint request to: D. Cieslinski
Accepted: 18 October 1996
Optical and near infrared spectroscopy of the stars DQ Ser and DT Ser are presented. DQ Ser shows a late-type continuum (M3 - M5) with emission lines of Balmer series, HeI, HeII, [OIII], OI and CaII triplet while DT Ser presents a earlier spectral type with emission of Balmer lines, HeI, HeII and [OIII]. DT Ser is a faint star 5 arcsec from a G companion. We suggest it to be a yellow symbiotic star.
Key words: stars: binaries: symbiotic / stars: emission line / stars: DQ Ser, DT Ser
© European Southern Observatory (ESO), 1997