The SDSS-HET Survey of Kepler Eclipsing Binaries. Description of the Survey and First Results

Suvrath Mahadevan, Chad F. Bender, Kelly Hambleton, Scott W. Fleming, Rohit Deshpande, Kyle Conroy, Gal Matijevič, Leslie Hebb, Arpita Roy, Hasan Ak, Blaž Leban, Andrej Prša

Research output: Contribution to journalArticle

Abstract

The Kepler mission has provided a treasure trove of eclipsing binaries (EBs), observed at extremely high photometric precision, nearly continuously for several years. We are carrying out a survey of ~100 of these EBs to derive dynamical masses and radii with precisions of 3% or better. We use multiplexed near-infrared H-band spectroscopy from the Sloan Digital Sky Survey-III and -IV APOGEE instrument and optical spectroscopy from the Hobby-Eberly Telescope High-resolution Spectrograph to derive double-lined spectroscopic orbits and dynamical mass ratios (q) for the EB sample, two of which we showcase in this paper. This orbital information is combined with Kepler photometry to derive orbital inclination, dynamical masses of the system components, radii, and temperatures. These measurements are directly applicable for benchmarking stellar models that are integrating the next generation of improvements, such as the magnetic suppression of convection efficiency, updated opacity tables, and fine-tuned equations of state. We selected our EB sample to include systems with low-mass (M M 0.8) primary or secondary components, as well as many EBs expected to populate the relatively sparse parameter space below ~0.5 Me. In this paper, we describe our EB sample and the analytical techniques we are utilizing, and also present masses and radii for two systems that inhabit particularly underpopulated regions of mass-radius-period space: KIC 2445134 and KIC 3003991. Our joint spectroscopic and photometric analysis of KIC 2445134 (q = 0.411 0.001) yields masses and radii of M M A = 1.29 0.03 M M B = 0.53 0.01, RA = 1.42 0.01 R, RB = 0.510 0.004 R and a temperature ratio of T T B A = 0.635 0.001; our analysis of KIC 3003991 (q = 0.298 0.006) yields M M A = 0.74 0.04 M M B = 0.222 0.007, RA = 0.84 0.01 R, RB = 0.250 0.004 R, and a temperature ratio of T T B A = 0.662 0.001.

Original languageEnglish (US)
Article number126
JournalAstrophysical Journal
Volume884
Issue number2
DOIs
StatePublished - Oct 20 2019

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radii
temperature ratio
Kepler mission
spectroscopy
orbitals
stellar models
spectroscopic analysis
opacity
benchmarking
temperature
mass ratios
inclination
spectrographs
photometry
equation of state
convection
equations of state
retarding
analytical method
telescopes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Mahadevan, S., Bender, C. F., Hambleton, K., Fleming, S. W., Deshpande, R., Conroy, K., ... Prša, A. (2019). The SDSS-HET Survey of Kepler Eclipsing Binaries. Description of the Survey and First Results. Astrophysical Journal, 884(2), [126]. https://doi.org/10.3847/1538-4357/ab3793
Mahadevan, Suvrath ; Bender, Chad F. ; Hambleton, Kelly ; Fleming, Scott W. ; Deshpande, Rohit ; Conroy, Kyle ; Matijevič, Gal ; Hebb, Leslie ; Roy, Arpita ; Ak, Hasan ; Leban, Blaž ; Prša, Andrej. / The SDSS-HET Survey of Kepler Eclipsing Binaries. Description of the Survey and First Results. In: Astrophysical Journal. 2019 ; Vol. 884, No. 2.
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Mahadevan, S, Bender, CF, Hambleton, K, Fleming, SW, Deshpande, R, Conroy, K, Matijevič, G, Hebb, L, Roy, A, Ak, H, Leban, B & Prša, A 2019, 'The SDSS-HET Survey of Kepler Eclipsing Binaries. Description of the Survey and First Results', Astrophysical Journal, vol. 884, no. 2, 126. https://doi.org/10.3847/1538-4357/ab3793

The SDSS-HET Survey of Kepler Eclipsing Binaries. Description of the Survey and First Results. / Mahadevan, Suvrath; Bender, Chad F.; Hambleton, Kelly; Fleming, Scott W.; Deshpande, Rohit; Conroy, Kyle; Matijevič, Gal; Hebb, Leslie; Roy, Arpita; Ak, Hasan; Leban, Blaž; Prša, Andrej.

In: Astrophysical Journal, Vol. 884, No. 2, 126, 20.10.2019.

Research output: Contribution to journalArticle

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AU - Mahadevan, Suvrath

AU - Bender, Chad F.

AU - Hambleton, Kelly

AU - Fleming, Scott W.

AU - Deshpande, Rohit

AU - Conroy, Kyle

AU - Matijevič, Gal

AU - Hebb, Leslie

AU - Roy, Arpita

AU - Ak, Hasan

AU - Leban, Blaž

AU - Prša, Andrej

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AB - The Kepler mission has provided a treasure trove of eclipsing binaries (EBs), observed at extremely high photometric precision, nearly continuously for several years. We are carrying out a survey of ~100 of these EBs to derive dynamical masses and radii with precisions of 3% or better. We use multiplexed near-infrared H-band spectroscopy from the Sloan Digital Sky Survey-III and -IV APOGEE instrument and optical spectroscopy from the Hobby-Eberly Telescope High-resolution Spectrograph to derive double-lined spectroscopic orbits and dynamical mass ratios (q) for the EB sample, two of which we showcase in this paper. This orbital information is combined with Kepler photometry to derive orbital inclination, dynamical masses of the system components, radii, and temperatures. These measurements are directly applicable for benchmarking stellar models that are integrating the next generation of improvements, such as the magnetic suppression of convection efficiency, updated opacity tables, and fine-tuned equations of state. We selected our EB sample to include systems with low-mass (M M 0.8) primary or secondary components, as well as many EBs expected to populate the relatively sparse parameter space below ~0.5 Me. In this paper, we describe our EB sample and the analytical techniques we are utilizing, and also present masses and radii for two systems that inhabit particularly underpopulated regions of mass-radius-period space: KIC 2445134 and KIC 3003991. Our joint spectroscopic and photometric analysis of KIC 2445134 (q = 0.411 0.001) yields masses and radii of M M A = 1.29 0.03 M M B = 0.53 0.01, RA = 1.42 0.01 R, RB = 0.510 0.004 R and a temperature ratio of T T B A = 0.635 0.001; our analysis of KIC 3003991 (q = 0.298 0.006) yields M M A = 0.74 0.04 M M B = 0.222 0.007, RA = 0.84 0.01 R, RB = 0.250 0.004 R, and a temperature ratio of T T B A = 0.662 0.001.

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