2016AJ....152..175N

Query : 2016AJ....152..175N

2016AJ....152..175N - Astron. J., 152, 175-175 (2016/December-0)

Dynamical mass measurement of the young spectroscopic binary V343 Normae AaAb resolved with the Gemini planet imager.

NIELSEN E.L., DE ROSA R.J., WANG J., RAMEAU J., SONG I., GRAHAM J.R., MACINTOSH B., AMMONS M., BAILEY V.P., BARMAN T.S., BULGER J., CHILCOTE J.K., COTTEN T., DOYON R., DUCHENE G., FITZGERALD M.P., FOLLETTE K.B., GREENBAUM A.Z., HIBON P., HUNG L.-W., INGRAHAM P., KALAS P., KONOPACKY Q.M., LARKIN J.E., MAIRE J., MARCHIS F., MARLEY M.S., MAROIS C., METCHEV S., MILLAR-BLANCHAER M.A., OPPENHEIMER R., PALMER D.W., PATIENCE J., PERRIN M.D., POYNEER L.A., PUEYO L., RAJAN A., RANTAKYRO F.T., SAVRANSKY D., SCHNEIDER A.C., SIVARAMAKRISHNAN A., SOUMMER R., THOMAS S., WALLACE J.K., WARD-DUONG K., WIKTOROWICZ S.J. and WOLFF S.G.

Abstract (from CDS):

We present new spatially resolved astrometry and photometry from the Gemini Planet Imager of the inner binary of the young multiple star system V343 Normae, which is a member of the β Pictoris (β Pic) moving group. V343 Normae comprises a K0 and mid-M star in a ∼4.5 year orbit (AaAb) and a wide 10'' M5 companion (B). By combining these data with archival astrometry and radial velocities we fit the orbit and measure individual masses for both components of MAa=1.10±0.10 M☉ and MAb=0.290±0.018 M☉. Comparing to theoretical isochrones, we find good agreement for the measured masses and JHK band magnitudes of the two components consistent with the age of the β Pic moving group. We derive a model-dependent age for the β Pic moving group of 26 ± 3 Myr by combining our results for V343 Normae with literature measurements for GJ 3305, which is another group member with resolved binary components and dynamical masses.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): planets and satellites: detection - stars: individual: V343 Nor - stars: individual: V343 Nor

Simbad objects: 14

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Number of rows : 14
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 * 51 Eri PM* 04 37 36.1326090888 -02 28 24.775726260   5.486 5.209     F0IV 285 0
2 * 51 Eri b Pl 04 37 36.1326090888 -02 28 24.775726260           ~ 238 0
3 StKM 1-497 TT* 04 37 37.4553491592 -02 29 28.950973764   12.04 10.59   8.59 M1.1V 138 0
4 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 627 1
5 HD 51849 SB* 06 58 26.0478781464 -12 59 30.691768956 11.375 10.328 9.157 8.443 7.797 K4V 81 0
6 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
7 HD 126983 SB* 14 30 20.9429507016 -49 31 08.533544160   5.423 5.376     A2Vs+A2Vs 59 0
8 HD 139084B PM* 15 38 56.7796135536 -57 42 18.954140724     14.80 14.88 11.73 M5Ve 32 1
9 HD 139084 SB* 15 38 57.5566916952 -57 42 27.346084668   8.78 7.977   7.106 K0V 174 0
10 HD 155555 RS* 17 17 25.5053342232 -66 57 03.732141636 7.795 7.499 6.723   6.39 G5V+K1V 292 1
11 HD 319139 SB* 18 14 10.4818675368 -32 47 34.516836060   11.47 10.68   9.11 K5+K7 423 0
12 V* PZ Tel BY* 18 53 05.8735056984 -50 10 49.897437168   9.22 8.342   7.464 G9IV 364 0
13 * eta Tel B LM* 19 22 51.3580284238 -54 25 31.569876496           M7.5V 78 0
14 2MASS J21140802-2251358 BD* 21 14 08.02560 -22 51 35.8380           L7.5 126 0

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