Astron. J., 162, 263-263 (2021/December-0)
A uniform search for nearby planetary companions to hot Jupiters in TESS data reveals hot Jupiters are still lonely.
HORD B.J., COLON K.D., KOSTOV V., GALGANO B., RICKER G.R., VANDERSPEK R., SEAGER S., WINN J.N., JENKINS J.M., BARCLAY T., CALDWELL D.A., ESSACK Z., FAUSNAUGH M., GUERRERO N.M. and WOHLER B.
Abstract (from CDS):
We present the results of a uniform search for additional planets around all stars with confirmed hot Jupiters observed by the Transiting Exoplanet Survey Satellite (TESS) in its Cycle 1 survey of the southern ecliptic hemisphere. Our search comprises 184 total planetary systems with confirmed hot Jupiters with Rp > 8 R⊕ and orbital period <10 days. The Transit Least Squares algorithm was utilized to search for periodic signals that may have been missed by other planet search pipelines. While we recovered 169 of these confirmed hot Jupiters, our search yielded no new statistically validated planetary candidates in the parameter space searched (P < 14 days). A lack of planet candidates nearby hot Jupiters in the TESS data supports results from previous transit searches of each individual system, now down to the photometric precision of TESS. This is consistent with expectations from a high-eccentricity migration formation scenario, but additional formation indicators are needed for definitive confirmation. We injected transit signals into the light curves of the hot Jupiter sample to probe the pipeline's sensitivity to the target parameter space, finding a dependence proportional to Rp2.32P–0.88 for planets within 0.3 <= Rp <= 4 R⊕ and 1 <= P <= 14 days. A statistical analysis accounting for this sensitivity provides a median and 90% confidence interval of 7.3–7.3+15.2 % for the rate of hot Jupiters with nearby companions in this target parameter space. This study demonstrates how TESS uniquely enables comprehensive searches for nearby planetary companions to nearly all the known hot Jupiters.
© 2021. The American Astronomical Society. All rights reserved.
Hot Jupiters - Transit photometry - Astronomy data analysis - Exoplanet systems
VizieR on-line data:
<Available at CDS (J/AJ/162/263): table3.dat>
Status at CDS
Tables of objects will be appraised for possible ingestion in SIMBAD.
View the references in ADS
To bookmark this query, right click on this link: simbad:2021AJ....162..263H and select 'bookmark this link' or equivalent in the popup menu