2017AJ....153..190J


Query : 2017AJ....153..190J

2017AJ....153..190J - Astron. J., 153, 190-190 (2017/April-0)

Integral field spectroscopy of the low-mass companion HD 984 B with the Gemini Planet Imager.

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

Abstract (from CDS):

We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager (GPI) as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J (1.12-1.3 µm) and H (1.50-1.80 µm) bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au (70-year) orbit with a 68% confidence interval between 14 and 28 au, an eccentricity of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119° with a 68% confidence interval between 114° and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ± 1.5 spectral type with a corresponding temperature of 2730–180+120 K. Photometry of the companion yields a luminosity of log(Lbol/L)=-2.88±0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ± 1 to 95 ± 4 MJup. These results are consistent with previous measurements of the object.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - stars: individual: HD 984 - stars: individual: HD 984

Simbad objects: 26

goto Full paper

goto View the references in ADS

Number of rows : 26
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 NAME THA As* 00 00 -62.0           ~ 466 0
2 HD 984 ** 00 14 10.2528328224 -07 11 56.812684848   7.82 7.32     F7V 96 0
3 BD-04 24 PM* 00 17 47.0973579384 -03 16 28.324199676   11.38 10.51     ~ 12 0
4 PM J00194+4614 LM* 00 19 26.2642874256 +46 14 07.789543152     20.0     M8 37 0
5 DENIS J004135.3-562112 LM* 00 41 35.3862348768 -56 21 12.872262132       17.97 14.69 M7.5e 33 0
6 LEHPM 1088 LM* 00 55 04.6906453267 -30 52 00.986016234           M7.2V 8 0
7 2MASS J01245068-3844389 LM* 01 24 50.6914305648 -38 44 39.018053976           M6 12 0
8 2MASS J05123569-3041067 LM* 05 12 35.6973169728 -30 41 06.757103256           M6.5 4 0
9 2MASS J05441150-2433018 LM* 05 44 11.5231225298 -24 33 02.517633593           M7.6V 18 0
10 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 279 0
11 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 470 0
12 2MASS J12271545-0636458 LM* 12 27 15.4480771488 -06 36 46.108672272           M9 7 0
13 HD 143567B LM* 16 01 55.65696 -21 58 53.0076           M8 38 0
14 RX J1609.5-2105B LM* 16 09 30.377 -21 04 56.97           ~ 118 0
15 NAME GSC 06214-00210B LM* 16 21 54.678 -20 43 11.33           ~ 86 0
16 SIPS J2039-1126 LM* 20 39 13.1375690856 -11 26 53.325084732       19.17 16.213 M8 12 0
17 SIPS J2049-1944 LM* 20 49 19.7504586496 -19 44 32.750924046       17.850 15.449 M7.5e 21 0
18 2MASS J21452779-0734340 LM* 21 45 27.8158965240 -07 34 34.002480396           M9V 7 0
19 LP 759-17 LM* 22 02 11.2669895232 -11 09 46.364042952   20.7   17.048 14.736 M6/6.5e 23 0
20 2MASS J22062157-6116284 BD* 22 06 21.576 -61 16 28.47           L0:pec 2 0
21 2MASS J22511530-6811216 LM* 22 51 15.3010769112 -68 11 21.578122428           M5: 4 0
22 HD 218396d Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 235 1
23 HD 218396e Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 204 1
24 HD 218396c Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 256 1
25 HD 218396b Pl 23 07 28.7157209544 +21 08 03.310767492           ~ 274 1
26 2MASS J23355852-0013040 LM* 23 35 58.5225194280 -00 13 04.087396884           M8V 9 0

To bookmark this query, right click on this link: simbad:objects in 2017AJ....153..190J and select 'bookmark this link' or equivalent in the popup menu