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

Solar twins are key in different areas of astrophysics, however only justover a hundred were identified and well-studied in the last two decades. Inthis work, we take advantage of the very precise \textit{Gaia} (DR2/EDR3),Tycho and 2MASS photometric systems to create the Inti survey of new solartwins in the Northern Hemisphere. The spectra of our targets were initiallyobtained with spectrographs of moderate resolution (ARCES and Goodmanspectrographs with $R$ = 31500 and 11930, respectively) to find the best solartwin candidates and then observed at McDonald Observatory with higher resolvingpower (TS23, $R$ = 60000) and signal-to-noise ratio (SNR $\sim$ 300-500). Thestellar parameters were estimated through the differential spectroscopicequilibrium relative to the Sun, which allow us to achieve a high internalprecision ($\sigma(T_{\rm{eff}})$ = 15 K, $\sigma(\log g)$ = 0.03 dex,$\sigma$([Fe/H]) = 0.01 dex, and $\sigma(v_{t})$ = 0.03 km s$^{-1}$). Wepropose a new class of stars with evolution similar to the Sun: \textit{solarproxy}, which is useful to perform studies related to the evolution of the Sun,such as its rotational and magnetic evolution. Its definition is based onmetallicity ($-$0.15 dex $\leq$ [Fe/H] $\leq$ +0.15 dex) and mass (0.95M$_{\odot}$ $\leq$ M $\leq$ 1.05 M$_{\odot}$) constraints, thus assuring thatthe star follows a similar evolutionary path as the Sun along the mainsequence. Based on this new definition, we report 70 newly identified solarproxies, 46 solar analogs and 13 solar-type stars. In addition, we identified 9\textit{close solar twins} whose stellar parameters are the most similar tothose of the Sun.

Searching for new solar twins: The Inti survey for the Northern Sky