dc.contributor.author |
Arun, R |
|
dc.contributor.author |
Mathew, B |
|
dc.contributor.author |
Sridharan, R |
|
dc.contributor.author |
Manoj, P |
|
dc.contributor.author |
Narang, M |
|
dc.contributor.author |
Kartha, S. S |
|
dc.contributor.author |
Maheswar, G |
|
dc.date.accessioned |
2021-02-24T11:26:50Z |
|
dc.date.available |
2021-02-24T11:26:50Z |
|
dc.date.issued |
2021-02 |
|
dc.identifier.citation |
Monthly Notices of the Royal Astronomical Society , Vol. 501, No. 1, pp. 1243–1252 |
en_US |
dc.identifier.issn |
1365-2966 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/7669 |
|
dc.description |
Restricted Access |
en_US |
dc.description.abstract |
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. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Oxford University Press on behalf of the Royal Astronomical Society |
en_US |
dc.relation.uri |
https://doi.org/10.1093/mnras/staa3652 |
|
dc.rights |
© The Royal Astronomical Society |
|
dc.subject |
binaries: visual |
en_US |
dc.subject |
stars: pre-main-sequence |
en_US |
dc.subject |
stars: variables: T Tauri, Herbig Ae/Be |
en_US |
dc.title |
Discovery of an M-type companion to the Herbig Ae Star V1787 Ori |
en_US |
dc.type |
Article |
en_US |