%0 Generic %1 lubin2017bright %A Lubin, Jack B. %A Rodriguez, Joseph E. %A Zhou, George %A Conroy, Kyle E. %A Stassun, Keivan G. %A Collins, Karen %A Stevens, Daniel J. %A Labadie-Bartz, Jonathan %A Stockdale, Christopher %A Myers, Gordon %A Colón, Knicole D. %A Bento, Joao %A Kehusmaa, Petri %A Petrucci, Romina %A Jofré, Emiliano %A Quinn, Samuel N. %A Lund, Michael B. %A Kuhn, Rudolf B. %A Siverd, Robert J. %A Beatty, Thomas G. %A Harlingten, Caisey %A Pepper, Joshua %A Gaudi, B. Scott %A James, David %A Jensen, Eric L. N. %A Reichart, Daniel %A Kedziora-Chudczer, Lucyna %A Bailey, Jeremy %A Melville, Graeme %D 2017 %K mdwarf %T A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs %U http://arxiv.org/abs/1706.02401 %X We report the discovery of KELT J041621-620046, a moderately bright (J$\sim$10.2) M dwarf eclipsing binary system at a distance of 39$\pm$3 pc. KELT J041621-620046 was first identified as an eclipsing binary using observations from the Kilodegree Extremely Little Telescope (KELT) survey. The system has a short orbital period of $\sim$1.11 days and consists of components with M$_1$ = $0.447^-0.047_+0.052\,M_ødot$ and M$_2$ = $0.399^-0.042_+0.046\,M_ødot$ in nearly circular orbits. The radii of the two stars are R$_1$ = $0.540^-0.032_+0.034\,R_ødot$ and R$_2$ = $0.453\pm0.017\,R_ødot$. Full system and orbital properties were determined (to $\sim$10% error) by conducting an EBOP global modeling of the high precision photometric and spectroscopic observations obtained by the KELT Follow-up Network. Each star is larger by 17-28% and cooler by 4-10% than predicted by standard (non-magnetic) stellar models. Strong H$\alpha$ emission indicates chromospheric activity in both stars. The observed radii and temperature discrepancies for both components are more consistent with those predicted by empirical relations that account for convective suppression due to magnetic activity.

@misc{lubin2017bright, abstract = {We report the discovery of KELT J041621-620046, a moderately bright (J$\sim$10.2) M dwarf eclipsing binary system at a distance of 39$\pm$3 pc. KELT J041621-620046 was first identified as an eclipsing binary using observations from the Kilodegree Extremely Little Telescope (KELT) survey. The system has a short orbital period of $\sim$1.11 days and consists of components with M$_1$ = $0.447^{-0.047}_{+0.052}\,M_\odot$ and M$_2$ = $0.399^{-0.042}_{+0.046}\,M_\odot$ in nearly circular orbits. The radii of the two stars are R$_1$ = $0.540^{-0.032}_{+0.034}\,R_\odot$ and R$_2$ = $0.453\pm0.017\,R_\odot$. Full system and orbital properties were determined (to $\sim$10% error) by conducting an EBOP global modeling of the high precision photometric and spectroscopic observations obtained by the KELT Follow-up Network. Each star is larger by 17-28% and cooler by 4-10% than predicted by standard (non-magnetic) stellar models. Strong H$\alpha$ emission indicates chromospheric activity in both stars. The observed radii and temperature discrepancies for both components are more consistent with those predicted by empirical relations that account for convective suppression due to magnetic activity.}, added-at = {2017-06-09T04:09:45.000+0200}, author = {Lubin, Jack B. and Rodriguez, Joseph E. and Zhou, George and Conroy, Kyle E. and Stassun, Keivan G. and Collins, Karen and Stevens, Daniel J. and Labadie-Bartz, Jonathan and Stockdale, Christopher and Myers, Gordon and Colón, Knicole D. and Bento, Joao and Kehusmaa, Petri and Petrucci, Romina and Jofré, Emiliano and Quinn, Samuel N. and Lund, Michael B. and Kuhn, Rudolf B. and Siverd, Robert J. and Beatty, Thomas G. and Harlingten, Caisey and Pepper, Joshua and Gaudi, B. Scott and James, David and Jensen, Eric L. N. and Reichart, Daniel and Kedziora-Chudczer, Lucyna and Bailey, Jeremy and Melville, Graeme}, biburl = {https://www.bibsonomy.org/bibtex/26f23b2a497c3398681771a6617dd43ea/superjenwinters}, description = {A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs}, interhash = {beee47deb3e7d6e4586f872e3e038829}, intrahash = {6f23b2a497c3398681771a6617dd43ea}, keywords = {mdwarf}, note = {cite arxiv:1706.02401Comment: 12 Pages, 9 Figures, 4 Tables, Accepted for publication in ApJ}, timestamp = {2017-06-09T04:09:45.000+0200}, title = {A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs}, url = {http://arxiv.org/abs/1706.02401}, year = 2017 }