The Monitor project: JW 380 – a 0.26-, 0.15-M⊙, pre-main-sequence eclipsing binary in the Orion nebula cluster

• Published in: Monthly notices of the Royal Astronomical Society Vol. 380; no. 2; pp. 541 - 550
• Main Authors: Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Stassun, Keivan G., Hebb, Leslie, Irwin, Mike, Moraux, Estelle, Bouvier, Jerome, Alapini, Aude, Alexander, Richard, Bramich, D. M., Holtzman, Jon, Martín, Eduardo L., McCaughrean, Mark J., Pont, Frédéric, Verrier, P. E., Zapatero Osorio, María Rosa
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 11.09.2007; Oxford University Press
• Subjects: Astronomy; Astrophysics; binaries: eclipsing; Double stars; Nebulae; open clusters and associations: individual: Orion nebula cluster; Stars & galaxies; stars: individual: JW 380; stars: pre-main-sequence; surveys; surveys; binaries: eclipsing; stars: pre-main-sequence; stars: individual: JW 380; open clusters and associations: individual: Orion nebula cluster

We report the discovery of a low-mass (0.26 ± 0.02, 0.15 ± 0.01 M⊙) pre-main-sequence (PMS) eclipsing binary (EB) with a 5.3 d orbital period. JW 380 was detected as part of a high-cadence time-resolved photometric survey (the Monitor project) using the 2.5-m Isaac Newton Telescope and Wide Field Ca...