2014ApJ...787....5N

Query : 2014ApJ...787....5N

2014ApJ...787....5N - Astrophys. J., 787, 5 (2014/May-3)

Discovery of a wide planetary-mass companion to the young M3 star GU Psc.

NAUD M.-E., ARTIGAU E., MALO L., ALBERT L., DOYON R., LAFRENIERE D., GAGNE J., SAUMON D., MORLEY C.V., ALLARD F., HOMEIER D., BEICHMAN C.A., GELINO C.R. and BOUCHER A.

Abstract (from CDS):

We present the discovery of a comoving planetary-mass companion ∼42'' (∼2000 AU) from a young M3 star, GU Psc, a likely member of the young AB Doradus Moving Group (ABDMG). The companion was first identified via its distinctively red i - z color (>3.5) through a survey made with Gemini-S/GMOS. Follow-up Canada-France-Hawaii Telescope/WIRCam near-infrared (NIR) imaging, Gemini-N/GNIRS NIR spectroscopy and Wide-field Infrared Survey Explorer photometry indicate a spectral type of T3.5±1 and reveal signs of low gravity which we attribute to youth. Keck/Adaptive Optics NIR observations did not resolve the companion as a binary. A comparison with atmosphere models indicates Teff= 1000-1100 K and log g = 4.5-5.0. Based on evolution models, this temperature corresponds to a mass of 9-13 MJup for the age of ABDMG (70-130 Myr). The relatively well-constrained age of this companion and its very large angular separation to its host star will allow its thorough characterization and will make it a valuable comparison for planetary-mass companions that will be uncovered by forthcoming planet-finder instruments such as Gemini Planet Imager and SPHERE.

Abstract Copyright: ∼

Journal keyword(s): infrared: planetary systems - planetary systems - planets and satellites: detection - stars: imaging - stars: individual: GU Psc - stars: low-mass

Simbad objects: 47

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Number of rows : 47
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * psi02 Psc ** 01 07 57.1639790784 +20 44 20.650382592   5.685 5.563     A3V 73 0
2 V* GU Psc RS* 01 12 35.0523595128 +17 03 55.571917320   15.59 14.10 13.78   M3 40 0
3 V* GU Psc B BD* 01 12 36.53808 +17 04 29.9424           T3.5 68 0
4 SDSS J011237.05+170456.9 * 01 12 37.0551132096 +17 04 56.882072244           ~ 1 0
5 LEHPM 1481B BD* 01 22 50.86 -24 39 51.6           L4-6 34 0
6 [PS78] 191 Er* 01 22 50.9356182264 -24 39 50.690658348   15.71 14.24 13.89   M3.5V 52 0
7 HD 18571 * 02 59 16.7596506264 +01 14 40.474198968   8.66 8.63     A0V 38 0
8 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3437 0
9 G 80-21 Er* 03 47 23.3412414313 -01 58 19.947831323 14.052 13.048 11.537 10.452 9.098 M3.0V 129 0
10 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1908 1
11 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 511 1
12 2MASS J05591914-1404488 BD* 05 59 19.1872549354 -14 04 49.206913185           T4.5 150 0
13 CD-35 2722 ** 06 09 19.2081174720 -35 49 31.065774636   12.61 11.083 10.682 9.337 M1Ve 79 0
14 HD 44627B BD* 06 19 12.9988086984 -58 03 20.198341332           L1 133 1
15 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 472 0
16 L 97-3 WD* 08 06 53.7536568947 -66 18 16.701075068   13.76 13.70 13.66 13.61 DQ 92 1
17 IC 2391 OpC 08 41 10.1 -52 59 28           ~ 822 0
18 2MASS J10210969-0304197 BD* 10 21 09.69240 -03 04 19.7904           T1+T4 75 0
19 HD 95086b Pl 10 57 03.0215719872 -68 40 02.449216128           ~ 102 1
20 NAME TW Hya Association As* 11 01.9 -34 42           ~ 942 0
21 CD-33 7795B LM* 11 31 55.2500 -34 36 25.200     20.40   15.8 M8.5/9e 124 0
22 2MASS J12060248+2813293 BD* 12 06 02.48952 +28 13 29.3160           T2.0+T4.5 19 0
23 TWA 27 LM* 12 07 33.4675524840 -39 32 54.016625184     19.95 17.99 15.88 M8IVe 339 0
24 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 281 0
25 2MASS J12095613-1004008 BD* 12 09 56.13096 -10 04 00.8076           T2+T7.5 60 0
26 2MASS J12144089+6316434 BD* 12 14 40.89984 +63 16 43.4352           T3.5 14 0
27 2MASS J12545393-0122474 BD* 12 54 53.9040607346 -01 22 47.399401142           T2e: 150 0
28 BD+13 2618C BD* 13 00 42.08415 +12 21 15.0536         23.28 T8.5p 130 0
29 * e Vir b Pl 13 16 46.5148594512 +09 25 26.960139646           ~ 110 1
30 LSPM J1459+0851 WD? 14 59 32.0670831696 +08 51 25.860049020   19.8   18.8   ~ 14 0
31 2MASS J15341711+1615463 BD* 15 34 17.11008 +16 15 46.3680           T1.5+T5.5 22 0
32 NAME SR 12C LM* 16 27 19.6577175120 -24 41 49.239711024           M9.0 47 0
33 G 204-39 PM* 17 57 50.9660613981 +46 35 19.127676045   13.97 11.64 11.3   M2.5V 82 0
34 SDSS J175805.46+463311.9 BD* 17 58 05.45496 +46 33 09.9108           T7 40 0
35 Wolf 1130 Er* 20 05 02.1950576493 +54 26 03.234326252   11.970 13.883     sdM1 140 0
36 HD 203030 BY* 21 18 58.2195697224 +26 13 49.960929036   9.206 8.426 8.79   K0V 89 0
37 V* HN Peg B BD* 21 44 28.47168 +14 46 07.7988           T2.5 127 0
38 CFBDS J214947-040308 BD* 21 49 47.20 -04 03 08.9           T7 27 0
39 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 163 1
40 2MASSI J2254188+312349 BD* 22 54 18.92016 +31 23 49.8300           T5.0 70 0
41 HD 218396c Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 261 1
42 HD 218396d Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 239 1
43 HD 218396b Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 278 1
44 HD 218396e Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 209 1
45 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1141 0
46 * 5 Psc PM* 23 08 40.9095327701 +02 07 40.355833093   6.33 5.43     G6IIIb 95 0
47 PM J23515+3127 PM* 23 51 33.6738769584 +31 27 23.022676908     13.602 13.105   M2.0V 38 0

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