2012MNRAS.425.2948D

Query : 2012MNRAS.425.2948D

2012MNRAS.425.2948D - Mon. Not. R. Astron. Soc., 425, 2948-2963 (2012/October-1)

Magnetometry of the classical T Tauri star GQ Lup: non-stationary dynamos and spin evolution of young suns.

DONATI J.-F., GREGORY S.G., ALENCAR S.H.P., HUSSAIN G., BOUVIER J., DOUGADOS C., JARDINE M.M., MENARD F. and ROMANOVA M.M.

Abstract (from CDS):

We report here results of spectropolarimetric observations of the classical T Tauri star (cTTS) GQ Lup carried out with ESPaDOnS at the Canada-France-Hawaii Telescope (CFHT) in the framework of the 'Magnetic Protostars and Planets' (MaPP) programme, and obtained at two different epochs (2009 July and 2011 June). From these observations, we first infer that GQ Lup has a photospheric temperature of 4300 ± 50 K and a rotation period of 8.4 ± 0.3 d; it implies that it is a 1.05 ± 0.07 M☉ star viewed at an inclination of ~=30°, with an age of 2-5 Myr and a radius of 1.7 ± 0.2 R☉, and has just started to develop a radiative core.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): techniques: polarimetric - stars: formation - stars: imaging - stars: magnetic field - stars: individual: GQ Lup - stars: rotation

Simbad objects: 8

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Number of rows : 8
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 V* BP Tau Or* 04 19 15.8339827632 +29 06 26.926959492   13.13 12.12 11.89   K5/7Ve 721 0
2 V* AA Tau Or* 04 34 55.4201902392 +24 28 53.033624580 13.14 13.34 12.20 12.03   K5Ve 801 0
3 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1
4 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 320 0
5 V* GQ Lup B LM* 15 49 12.05 -35 39 05.1           M9e 165 1
6 V* GQ Lup Or* 15 49 12.1053805848 -35 39 05.058139788 12.19 12.76 11.66 11.15   K7Ve 334 1
7 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
8 CD-24 12689 Or* 16 27 40.2857881416 -24 22 04.130226300   12.91 11.533 11.11 10.00 K5e 301 0

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