Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 521, Issue 1, Pages 558-584Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stad367
Keywords
binaries (including multiple): close; binaries: eclipsing; stars: individual: TIC 47151245; stars: individual: TIC 81525800; stars: individual: TIC 99013269; stars: individual: TIC 229785001
Categories
Ask authors/readers for more resources
We report the independent discovery and analysis of nine new compact triply eclipsing triple star systems using TESS mission data. Each system exhibits distinct third-body eclipses where the third star occults the inner eclipsing binary or vice versa. By utilizing photodynamical analysis and additional observational data, we were able to determine the parameters and orbital elements of all three stars. Statistical insights into the properties of these systems were gained by comparing them with a comparable number of previously published compact triply eclipsing triples.
In this work, we report the independent discovery and analysis of nine new compact triply eclipsing triple star systems found with the Transiting Exoplanet Survey Satellite (TESS) mission: TICs 47151245, 81525800, 99013269, 229785001, 276162169, 280883908, 294803663, 332521671, and 356324779. Each of these nine systems exhibits distinct third-body eclipses where the third ('tertiary') star occults the inner eclipsing binary (EB), or vice versa. We utilize a photodynamical analysis of the TESS photometry, archival photometric data, TESS eclipse timing variations of the EBs, available archival spectral energy distribution (SED) curves, and, in some cases, newly acquired radial velocity observations, to solve for the parameters of all three stars, as well as most of the orbital elements. From these analyses we find that the outer orbits of all nine systems are viewed nearly edge on (i.e. within less than or similar to 4 degrees), and six of the systems are coplanar to within 5 degrees; the others have mutual inclination angles of 20 degrees, 41 degrees, and possibly 179 degrees (i.e. a retrograde outer orbit). The outer orbital periods range from 47.8 to 604 d, with eccentricities spanning 0.004-0.61. The masses of all 18 EB stars are in the range of 0.9-2.6 M-circle dot and are mostly situated near the main sequence. By contrast, the masses and radii of the tertiary stars range from 1.4 to 2.8 M-circle dot and 1.5 to 13 R-circle dot, respectively. We make use of the system parameters from these nine systems, plus those from a comparable number of compact triply eclipsing triples published previously, to gain some statistical insight into their properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available