Discovery of an M-type companion to the Herbig Ae Star V1787 Ori
- Title
- Discovery of an M-type companion to the Herbig Ae Star V1787 Ori
- Creator
- Arun R.; Mathew B.; Rengaswamy S.; Manoj P.; Narang M.; Kartha S.S.; Maheshwar G.
- Description
- The intermediate-mass Herbig Ae star V1787 Ori is a member of the L1641 star-forming region in the Orion A molecular cloud. We report the detection of an M-type companion to V1787 Ori at a projected separation of 6.66 arcsec (corresponding to 2577 au), from the analysis of VLT/NACO adaptive optics Ks-band image. Using astrometric data from Gaia DR2, we show that V1787 Ori A and B share similar distance (d ?387 pc) and proper motion, indicating that they are physically associated. We estimate the spectral type of V1787 Ori B to be M5 2 from colour-spectral type calibration tables and template matching using SpeX spectral library. By fitting PARSEC models in the Pan-STARRS colour-magnitude diagram, we find that V1787 Ori B has an age of 8.1$^{+1.7}_{-1.5}$ Myr and a mass of 0.39$^{+0.02}_{-0.05}$ M. We show that V1787 Ori is a pre-main-sequence wide binary system with a mass ratio of 0.23. Such a low-mass ratio system is rarely identified in Herbig Ae/Be binary systems. We conclude this work with a discussion on possible mechanisms for the formation of V1787 Ori wide binary system. 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-501, No. 1, pp. 1243-1252.
- Date
- 2021-01-01
- Publisher
- Oxford University Press
- Subject
- binaries: visual; stars: pre-main-sequence; stars: variables: T Tauri, Herbig Ae/Be
- Coverage
- Arun R., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Mathew B., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Rengaswamy S., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Manoj P., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Narang M., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Kartha S.S., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India; Maheshwar G., Department of Physics and Electronics, Christ Deemed to Be University, Bangalore, 560029, India
- Rights
- All Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Arun R.; Mathew B.; Rengaswamy S.; Manoj P.; Narang M.; Kartha S.S.; Maheshwar G., “Discovery of an M-type companion to the Herbig Ae Star V1787 Ori,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/15884.