English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio andshort orbital period are atypical amongst solar-like (Teff ~< 6000 K) binarysystems. Our analysis of TYC 4110-01037-1 reveals it to be a moderately aged(~<5 Gyr) solar-like star having a mass of 1.07 +/- 0.08 MSun and radius of0.99 +/- 0.18 RSun. We analyze 32 radial velocity measurements from theSDSS-III MARVELS survey as well as 6 supporting radial velocity measurementsfrom the SARG spectrograph on the 3.6m TNG telescope obtained over a period of~2 years. The best Keplerian orbital fit parameters were found to have a periodof 78.994 +/- 0.012 days, an eccentricity of 0.1095 +/- 0.0023, and asemi-amplitude of 4199 +/- 11 m/s. We determine the minimum companion mass (ifsin i = 1) to be 97.7 +/- 5.8 MJup. The system's companion to host star massratio, >0.087 +/- 0.003, places it at the lowest end of observed values forshort period stellar companions to solar-like (Teff ~< 6000 K) stars. Onepossible way to create such a system would be if a triple-component stellarmultiple broke up into a short period, low q binary during the clusterdispersal phase of its lifetime. A candidate tertiary body has been identifiedin the system via single-epoch, high contrast imagery. If this object isconfirmed to be co-moving, we estimate it would be a dM4 star. We present theseresults in the context of our larger-scale effort to constrain the statisticsof low mass stellar and brown dwarf companions to FGK-type stars via theMARVELS survey.

the astronomical journal

Very Low-Mass Stellar and Substellar Companions to Solar-Like Stars from  MARVELS I: A Low Mass Ratio Stellar Companion to TYC 4110-01037-1 in a 79-day  Orbit