2011ApJ...729L..26V

Query : 2011ApJ...729L..26V

2011ApJ...729L..26V - Astrophys. J., 729, L26 (2011/March-2)

Astrophysical parameters and habitable zone of the exoplanet hosting star GJ 581.

VON BRAUN K., BOYAJIAN T.S., KANE S.R., VAN BELLE G.T., CIARDI D.R., LOPEZ-MORALES M., McALISTER H.A., HENRY T.J., JAO W.-C., RIEDEL A.R., SUBASAVAGE J.P., SCHAEFER G., TEN BRUMMELAAR T.A., RIDGWAY S., STURMANN L., STURMANN J., MAZINGUE J., TURNER N.H., FARRINGTON C., GOLDFINGER P.J. and BODEN A.F.

Abstract (from CDS):

GJ 581 is an M dwarf host of a multiplanet system. We use long-baseline interferometric measurements from the CHARA Array, coupled with trigonometric parallax information, to directly determine its physical radius to be 0.299 ±0.010 R☉. Literature photometry data are used to perform spectral energy distribution fitting in order to determine GJ 581's effective surface temperature TEFF= 3498±56 K and its luminosity L = 0.01205±0.00024 L☉. From these measurements, we recompute the location and extent of the system's habitable zone and conclude that two of the planets orbiting GJ 581, planets d and g, spend all or part of their orbit within or just on the edge of the habitable zone.

Abstract Copyright: ∼

Journal keyword(s): infrared: stars - planetary systems - stars: fundamental parameters - stars: individual: GJ 581 - stars: late-type - techniques: interferometric

Simbad objects: 7

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Number of rows : 7
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 BD-07 4003c Pl 15 19 26.8269387505 -07 43 20.189497466           ~ 124 1
2 BD-07 4003e Pl 15 19 26.8269387505 -07 43 20.189497466           ~ 86 1
3 BD-07 4003 BY* 15 19 26.8269387505 -07 43 20.189497466 13.403 11.76 10.560 9.461 8.911 M3V 717 2
4 BD-07 4003b Pl 15 19 26.8269387505 -07 43 20.189497466           ~ 97 1
5 BD-07 4003d Pl 15 19 26.8269387505 -07 43 20.189497466           ~ 159 1
6 HD 136257 PM* 15 20 00.0853043928 -08 39 42.141953952   8.09 7.55     G1V 42 0
7 HD 136713 PM* 15 22 36.6949853712 -10 39 40.055679252 9.766 8.932 7.942 7.402 6.949 K2V 106 0

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