Optical characterisation and Radial velocity monitoring with Belgian and Indian Telescopes

Abstract

Two catalogues of exoplanet and eclipsing binary candidates were published by the Barros et al. (2016, A&A, 594, A100) and Vanderburg et al. (2016, ApJS, 222, 14). They were detected from the Kepler archival data. Out of these, we selected a sample of objects for a detailed follow-up study to ascertain their precise nature. For the project “Optical characterization and Radial velocity mo- nitoring with Belgian and Indian Telescopes” (ORBIT), we aim to use high-resolution spectra gathered with HERMES@Mercator/1.2-m (La Palma, Spain) and HESP@HTC/2-m (Hanle, India) in combination with photometric observations from small- and medium-size telescopes at Devasthal Observatory (ARIES, Nainital, India) for a radial velocity monitoring and to determine accurate values for their physical parameters. The study of a sufficiently large sample of such candidates will enable us to make a large contribution on (1) the detection and characterisation of exoplanets (by determining accurate physical parameters through constraining the orbital inclination) and (2) on the alleviation of the mass-radius problem of the low-mass stars (by significantly increasing the number of low-mass eclipsing binaries with accurate masses, radii and metallicities).

Collaborators

• Alaxender Panchal (ARIES, Nainital; alaxender@aries.res.in) → Principle Investigator
• Aruna Goswami (IIA, Bengaluru; aruna@iiap.res.in)
• Yogesh Chandra Joshi (ARIES, Nainital; yogesh@aries.res.in)
• Peter De Cat (ROB, Brussels; Peter.DeCat@oma.be)
• Patricia Lampens (ROB, Brussels; Patricia.Lampens@oma.be)
• Lore Vermeylen (ROB, Brussels; Lore.Vermeylen@oma.be)

Publications

• Joshi Y.C., De Cat P., Panchal A., Goswami A., Lampens P., Vermeylen L., Maurya J., 2019, "Optical characterization and Radial velocity monitoring of Exoplanet and Eclipsing Binary", Bulletin de la Société Royale des Sciences de Liège 88, 82 (Paper)

Reports

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Presentations

• Joshi Y.C., De Cat P., Panchal A., Goswami A., Lampens P., Vermeylen L., Maurya J., 2019, "Optical characterization and Radial velocity monitoring of Exoplanet and Eclipsing Binary", 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, contributed talk (pdf, mp4)

Proposals

• De Cat P., Panchal A., Goswami A., Lampens P., Joshi Y., "Characterization of planetary and eclipsing binary candidates: chasing secondary transits/eclipses with TIRCAM2 (Part III), time application for TIRCAM2@Devasthal/3.6-m DOT in 10/2021-01/2022; 24 hours requested; 24 hours allocated
• De Cat P., Panchal A., Joshi Y., Lampens P., Goswami A., "Characterization of planetary and eclipsing binary candidates: chasing secondary transits/eclipses with TIRCAM2", time application for TIRCAM2@Devasthal/3.6-m DOT in 02/2021-05/2021; 28 hours requested; 24 hours allocated
• De Cat P., Panchal A., Goswami A., Lampens P., Joshi Y., "Characterization of planetary and eclipsing binary candidates: chasing secondary transits/eclipses with TIRCAM2", time application for TIRCAM2@Devasthal/3.6-m DOT in 10/2020-01/2021; 3 nights requested; 1.5 nights allocated
• De Cat P., Yoshi Y.C., Panchal A., Lampens P., Goswami A., Vermeylen L., "Optical characterisation and Radial velocity monitoring with Belgian and Indian Telescopes (ORBIT): exoplanet and low-mass eclipsing binary candidates", time application for HERMES@ORM/1.2-m in 10/2019-03/2020; 13.00 hours requested; 13.00 hours allocated
• Panchal A., Goswami A., Joshi Y.C., De Cat P., Lampens P., Vermeylen L., "Radial velocity characterization of low-mass eclipsing binary candidates",  time application for HESP@Hanle/2.0-m HTC in 05/2019-08/2019; 6 nights requested; 4 nights allocated
• De Cat P., Yoshi Y.C., Panchal A., Lampens P., Goswami A., Vermeylen L., "Optical characterisation and Radial velocity monitoring with Belgian and Indian Telescopes (ORBIT): exoplanet and low-mass eclipsing binary candidates", time application for HERMES@ORM/1.2-m in 04/2019-09/2019; 21.2 hours requested; 21.2 hours allocated
• Panchal A., Goswami A., Joshi Y.C., De Cat P., Lampens P., Vermeylen L., "Radial velocity characterization of low-mass eclipsing binary candidates", time application for HESP@Hanle/2.0-m HTC in 01/2019-04/2019; 6 nights requested; 2 nights allocated
• De Cat P., Yoshi Y.C., Panchal A., Lampens P., Goswami A., Vermeylen L., "Optical characterisation and Radial velocity monitoring with Belgian and Indian Telescopes (ORBIT): exoplanet and low-mass eclipsing binary candidates", time application for HERMES@ORM/1.2-m in 10/2018-03/2019; 25.4 hours requested; 25.4 hours allocated
• Joshi Y.C., De Cat P., Goswami A., Panchal A., Lampens P., Vermeylen L., "Optical characterization and Radial velocity monitoring of Exoplanet and Low-mass eclipsing binary candidates", time application for HESP@Hanle/2.0-m HTC in 05/2018-08/2018; 4 nights requested; 1 night allocated