Open AccessPROPERTIES OF THE RECENTLY DISCOVERED ECLIPSING BINARY GSC 03421-01402
Author(s) -
Christopher Lloyd,
James Screech
Publication year - 2021
Publication title -
open european journal on variable stars
Language(s) - English
Resource type - Journals
ISSN - 1801-5964
DOI - 10.5817/oejv2021-0221
Subject(s) - eclipse , binary number , astrophysics , light curve , physics , contact binary , primary (astronomy) , amplitude , binary star , primary component , astronomy , stars , optics , mathematics , computer science , computer network , arithmetic
GSC 03421-01402 is a low-amplitude eclipsing binary with a period of 7.6800475(44) d. The eclipsing binary is one component of a close pair identified in the Gaia EDR3 data with ∆G = 0.m45. The light-curve suggests that the primary eclipse is total with an observed depth of 0.m13, but due to dilution the true depth could be ∼ 0.23 or 0.37 mag. A weak, 0.02 mag, secondary eclipse is seen displaced slightly to phase 0.491. The system is probably a detached Algol-type eclipsing binary dominated by a mid G-type primary, but until the uncertainties in the relative magnitudes and distance are resolved much remains in doubt.