dc.contributor.author | Dupuy, TJ | |
dc.contributor.author | Liu, MC | |
dc.contributor.author | Magnier, EA | |
dc.contributor.author | Best, WMJ | |
dc.contributor.author | Baraffe, I | |
dc.contributor.author | Chabrier, G | |
dc.contributor.author | Forveille, T | |
dc.contributor.author | Metchev, SA | |
dc.contributor.author | Tremblin, P | |
dc.date.accessioned | 2020-05-05T13:00:29Z | |
dc.date.issued | 2020-04-16 | |
dc.description.abstract | We present new parallax measurements from the CFHT Infrared Parallax Program and the Pan-STARRS 3π Steradian Survey for the young (≈150−300 Myr) triple system VHS J125601.92−125723.9. This system is composed of a nearly equal-flux binary ("AB") and a wide, possibly planetary-mass companion ("b"). The system's published parallactic distance (12.7±1.0 pc) implies absolute magnitudes unusually faint compared to known young objects and is in tension with the spectrophotometric distance for the central binary (17.2±2.6 pc). Our CFHT and Pan-STARRS parallaxes are consistent, and the more precise CFHT result places VHS J1256-1257 at 22.2+1.1−1.2 pc. Our new distance results in higher values for the companion's mass (19±5 MJup) and temperature (1240±50 K), and also brings the absolute magnitudes of all three components into better agreement with known young objects. | en_GB |
dc.identifier.citation | Vol. 4 (4), article 54 | en_GB |
dc.identifier.doi | 10.3847/2515-5172/ab8942 | |
dc.identifier.uri | http://hdl.handle.net/10871/120931 | |
dc.language.iso | en | en_GB |
dc.publisher | American Astronomical Society / IOP Publishing | en_GB |
dc.rights | © 2020. The American Astronomical Society. All rights reserved. | en_GB |
dc.subject | astrometry | en_GB |
dc.subject | brown dwarfs | en_GB |
dc.subject | stars: individual | en_GB |
dc.title | The Parallax of VHS J1256-1257 from CFHT and Pan-STARRS 1 | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-05-05T13:00:29Z | |
dc.description | This is the author accepted manuscript. The final version is available from the American Astronomical Society via the DOI in this record | en_GB |
dc.identifier.journal | Research Notes of the AAS | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2020-04-08 | |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2020-04-16 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-05-05T12:59:00Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2020-05-05T13:00:39Z | |
refterms.panel | B | en_GB |