Identification of DQ Serpentis and DT Serpentis as symbiotic stars
Abstract
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 $V=15.4$ star 5 arcsec from a $V=12.8$ G companion. We suggest it to be a yellow symbiotic star. Based on observations made at Laboratorio Nacional de Astrofisica/CNPq, Brazil.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- July 1997
- DOI:
- 10.1051/aas:1997179
- Bibcode:
- 1997A&AS..124...57C
- Keywords:
-
- STARS: BINARIES: SYMBIOTIC;
- STARS: EMISSION LINE;
- STARS: DQ SER;
- DT SER