2015ApJ...798L...3C

Query : 2015ApJ...798L...3C

2015ApJ...798L...3C - Astrophys. J., 798, L3 (2015/January-1)

The first H-band spectrum of the giant planet β Pictoris b.

CHILCOTE J., BARMAN T., FITZGERALD M.P., GRAHAM J.R., LARKIN J.E., MACINTOSH B., BAUMAN B., BURROWS A.S., CARDWELL A., DE ROSA R.J., DILLON D., DOYON R., DUNN J., ERIKSON D., GAVEL D., GOODSELL S.J., HARTUNG M., HIBON P., INGRAHAM P., KALAS P., KONOPACKY Q., MAIRE J., MARCHIS F., MARLEY M.S., MAROIS C., MILLAR-BLANCHAER M., MORZINSKI K., NORTON A., OPPENHEIMER R., PALMER D., PATIENCE J., PERRIN M., POYNEER L., PUEYO L., RANTAKYRO F.T., SADAKUNI N., SADDLEMYER L., SAVRANSKY D., SERIO A., SIVARAMAKRISHNAN A., SONG I., SOUMMER R., THOMAS S., WALLACE J.K., WIKTOROWICZ S. and WOLFF S.

Abstract (from CDS):

Using the recently installed Gemini Planet Imager (GPI), we have obtained the first H-band spectrum of the planetary companion to the nearby young star β Pictoris. GPI is designed to image and provide low-resolution spectra of Jupiter-sized, self-luminous planetary companions around young nearby stars. These observations were taken covering the H band (1.65 µm). The spectrum has a resolving power of ∼45 and demonstrates the distinctive triangular shape of a cool substellar object with low surface gravity. Using atmospheric models, we find an effective temperature of 1600-1700 K and a surface gravity of log (g) = 3.5-4.5 (cgs units). These values agree well with "hot-start" predictions from planetary evolution models for a gas giant with mass between 10 and 12 MJup and age between 10 and 20 Myr.

Abstract Copyright: ∼

Journal keyword(s): infrared: general - instrumentation: adaptive optics - planetary systems - stars: individual: a Pictoris - techniques: spectroscopic

Simbad objects: 15

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Number of rows : 15
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 2MASS J04373705+2331080 BD* 04 37 37.05048 +23 31 08.0688           L1.5 23 0
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1905 1
3 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 511 1
4 HD 44627B BD* 06 19 12.9988086984 -58 03 20.198341332           L1 133 1
5 HD 95086b Pl 10 57 03.0215719872 -68 40 02.449216128           ~ 102 1
6 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 281 0
7 TWA 40 BD* 12 07 48.3532260288 -39 00 04.484586600           L1 20 0
8 * e Vir b Pl 13 16 46.5148594512 +09 25 26.960139646           ~ 110 1
9 RX J1609.5-2105B LM* 16 09 30.377 -21 04 56.97           ~ 118 0
10 2MASS J21543454-1055308 BD* 21 54 34.54272 -10 55 30.8424           L5 16 0
11 2MASS J22134491-2136079 BD* 22 13 44.9168962584 -21 36 08.229763260           L0gamma 27 0
12 * alf PsA b Pl 22 57 39.04625 -29 37 20.0533           ~ 201 1
13 HD 218396c Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 261 1
14 HD 218396b Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 278 1
15 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1139 0

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