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| Query : 2018MNRAS.481.5339B |
2018MNRAS.481.5339B - Mon. Not. R. Astron. Soc., 481, 5339-5349 (2018/December-3)
Extending Gaia DR2 with HST narrow-field astrometry: the WISE J154151.65-225024.9 test case.
BEDIN L.R. and FONTANIVE C.
Abstract (from CDS):
One field containing WISE J154151.65- 225024.9 was observed by Hubble Space Telescope at three different epochs taken in ∼5 yr. We measured positions of sources in all images and successfully linked these positions to the Gaia DR2 absolute system to derive the astrometric parameters for this faint close-by Y1 brown dwarf. The developed procedure avoids traditional limitations of relative imaging-astrometry with narrow-field cameras, extending Gaia DR2 to fainter magnitudes. We found (µ_αcos δ_, µδ, π) = (-902.62 ± 0.35 mas yr–1, -88.26 ± 0.35 mas yr–1, 168.4 ± 2.2 mas), which represent a sizable improvement over recent determinations in the literature. Applying a correction from relative (π) to absolute parallax (p) we found p = 169 ± 2 mas, corresponding to a distance of 5.9 ± 0.1 pc.
Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
Journal keyword(s): brown dwarfs
Simbad objects: 28
| Number of rows : 28 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gaia DR3 6240156335093137536 | * | 15 41 46.7725537656 | -22 50 30.675251688 | ~ | 1 | 0 | |||||
| 2 | Gaia DR3 6240155579178890624 | * | 15 41 47.2539055248 | -22 50 50.174855592 | ~ | 1 | 0 | |||||
| 3 | Gaia DR3 6240155583476754688 | * | 15 41 47.9438086608 | -22 50 49.587073944 | ~ | 1 | 0 | |||||
| 4 | Gaia DR3 6240156369452880000 | * | 15 41 48.1456549704 | -22 50 06.558362988 | ~ | 1 | 0 | |||||
| 5 | Gaia DR3 6240155613538632576 | * | 15 41 48.5656444848 | -22 50 24.380141604 | ~ | 1 | 0 | |||||
| 6 | Gaia DR3 6240156747410006656 | * | 15 41 48.7754890896 | -22 49 33.041881344 | ~ | 1 | 0 | |||||
| 7 | Gaia DR3 6240155514754368128 | * | 15 41 49.4276769240 | -22 51 37.200383856 | ~ | 1 | 0 | |||||
| 8 | Gaia DR3 6240155510461221248 | * | 15 41 49.5026172384 | -22 51 19.015683408 | ~ | 1 | 0 | |||||
| 9 | Gaia DR3 6240156747410007040 | * | 15 41 49.7366074488 | -22 49 27.356107152 | ~ | 1 | 0 | |||||
| 10 | Gaia DR3 6240155613538627840 | * | 15 41 49.8332652000 | -22 50 55.196447100 | ~ | 1 | 0 | |||||
| 11 | Gaia DR3 6240155617833592576 | * | 15 41 51.0957479160 | -22 50 26.959191468 | ~ | 1 | 0 | |||||
| 12 | Gaia DR3 6240155613540444800 | * | 15 41 51.4464461904 | -22 50 12.495566760 | ~ | 1 | 0 | |||||
| 13 | Gaia DR3 6240155613538630784 | * | 15 41 51.5160656088 | -22 50 43.379601252 | ~ | 1 | 0 | |||||
| 14 | Gaia DR3 6240155617836303488 | * | 15 41 51.7036803624 | -22 50 18.680527464 | ~ | 1 | 0 | |||||
| 15 | Gaia DR3 6240155617832556544 | * | 15 41 51.7945729536 | -22 50 39.164619120 | ~ | 1 | 0 | |||||
| 16 | Gaia DR3 6240155617836301184 | * | 15 41 51.8745373632 | -22 50 37.805161920 | ~ | 1 | 0 | |||||
| 17 | Gaia DR3 6240155995793427072 | * | 15 41 52.0170951432 | -22 49 54.091230528 | ~ | 1 | 0 | |||||
| 18 | Gaia DR3 6240156751708211200 | * | 15 41 52.0845784200 | -22 49 25.836664620 | ~ | 1 | 0 | |||||
| 19 | Gaia DR3 6240155995790716928 | * | 15 41 52.0875624888 | -22 50 02.303493504 | ~ | 1 | 0 | |||||
| 20 | WISE J154151.65-225024.9 | BD* | 15 41 52.28912 | -22 50 24.7060 | Y0 | 59 | 0 | |||||
| 21 | Gaia DR3 6240155995793424768 | * | 15 41 53.1600731856 | -22 50 13.457335776 | ~ | 1 | 0 | |||||
| 22 | Gaia DR3 6240155549116821248 | * | 15 41 53.7486759768 | -22 50 55.790005956 | ~ | 1 | 0 | |||||
| 23 | Gaia DR3 6240155922776275840 | * | 15 41 54.5357457336 | -22 50 43.114348392 | ~ | 1 | 0 | |||||
| 24 | Gaia DR3 6240155927074435072 | * | 15 41 55.5496192968 | -22 49 55.178345964 | ~ | 1 | 0 | |||||
| 25 | Gaia DR3 6240155927073943680 | * | 15 41 55.7121234888 | -22 50 37.936108032 | ~ | 1 | 0 | |||||
| 26 | Gaia DR3 6240155922776274560 | * | 15 41 55.7899915896 | -22 50 48.284678292 | ~ | 1 | 0 | |||||
| 27 | Gaia DR3 6240155922778495360 | * | 15 41 56.0239425072 | -22 50 38.302600236 | ~ | 1 | 0 | |||||
| 28 | Gaia DR3 6240155922776280064 | * | 15 41 56.1033304032 | -22 50 10.189538592 | ~ | 1 | 0 |
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