2018ApJ...864...42C

Query : 2018ApJ...864...42C

2018ApJ...864...42C - Astrophys. J., 864, 42-42 (2018/September-1)

The TRENDS High-contrast imaging survey. VII. Discovery of a nearby Sirius-like white dwarf system (HD 169889).

CREPP J.R., GONZALES E.J., BOWLER B.P., MORALES F., STONE J., SPALDING E., VAZ A., HINZ P., ERTEL S., HOWARD A. and ISAACSON H.

Abstract (from CDS):

Monitoring the long-term radial velocity (RV) and acceleration of nearby stars has been proven as an effective method for directly detecting binary and substellar companions. Some fraction of nearby RV trend systems are expected to be comprised of compact objects that likewise induce a systemic Doppler signal. In this paper, we report the discovery of a white dwarf (WD) companion found to orbit the nearby (π = 28.297 ± 0.066 mas) G9 V star HD 169889. High-contrast imaging observations using NIRC2 at the W. M. Keck Observatory and LMIRCam at the Large Binocular Telescope (LBT) Observatory uncover the (ΔH = 9.76 ± 0.16, ΔL' = 9.60 ± 0.03) companion at an angular separation of 0.''8 (28 au). Thirteen years of precise Doppler observations reveal a steep linear acceleration in the RV time series and place a dynamical constraint on the companion mass of M >= 0.369 ± 0.010 M☉. This "Sirius-like" system adds to the census of WD companions suspected to be missing from surveys of in the solar neighborhood.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrometry - stars: individual: (HD 169889, HIP 90365, SAO 123479) - techniques: high angular resolution - techniques: radial velocities - white dwarfs

Simbad objects: 1

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Number of rows : 1
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 HD 169889 SB* 18 26 21.9379065785 +08 36 56.774618056   9.02   7.8   K0 86 0

Query : 2018ApJ...864...42C

Basic data :
HD 169889 -- Spectroscopic Binary
Other object types: otypes_help 		* (HD,AG,...), PM* (2016ApJ,Ci,...), ** (**,CCDM,...), SB* (2018ApJ), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		18 26 21.9379065785 +08 36 56.774618056 (Optical) [ 0.0206 0.0211 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		18 23 58.8662343454 +08 35 30.422681499 [ 0.0206 0.0211 90 ]
Gal coord. (ep=J2000) : 		037.8231360582195 +09.4613637503483 [ 0.0206 0.0211 90 ]
Proper motions mas/yr : 		-195.089 -471.059 [0.025 0.026 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -17.526 [0.0016] / z(spectroscopic) -0.000058 [0.000000] / cz -17.53 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		28.2794 [0.0259] A 2020yCat.1350....0G
Spectral type: 		K0 D 1985ApJS...59..197B
Fluxes (6) :
B 9.02 [~] E ~
R 7.8 [~] E 2003AJ....125..984M
G 8.108023 [0.002763] C 2020yCat.1350....0G
J 6.906 [0.023] C 2003yCat.2246....0C
H 6.560 [0.017] C 2003yCat.2246....0C
K 6.486 [0.017] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 43 Display criteria :

Identifiers (39) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 169889 HIC 90365 PM 18240+0836 uvby98 100169889
** LDS 1012B HIP 90365 PPM 165817 WDS J18262+0847B
AG+08 2292 IDS 18214+0844 B SAO 123479 WEB 15470
ASCC 1063885 LFT 1416 SPOCS 2975 WISEA J182621.80+083651.9
BD+08 3692 LHS 3388 TIC 25933136 YZC 22 8497
CCDM J18262+0846B L 1136-115 TYC 1023-1942-1 YZ 8 8497
Ci 20 1089 LSPM J1826+0836 UBV 15675 Gaia DR2 4478524169500496000
GCRV 10914 LTT 15453 UBV M 22947 Gaia DR3 4478524169500496000
GEN# +1.00169889 2MASS J18262194+0836570 UCAC2 34880461 Gaia DR1 4478524165189003136
G 141-9 NLTT 46484 USNO-B1.0 0986-00370904

References (86 between 1850 and 2026) (Total 86)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 9    Distance : 2    Rot : 3    Fe/H : 7    Plx : 5    PM : 12    SpT : 4   

   

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Link by name to the catalogue in VizieR :

HD 169889 AG+08 2292 BD+08 3692 CCDM J18262+0846B G 141-9
HIC 90365 HIP 90365 LHS 3388 LSPM J1826+0836 2MASS J18262194+0836570
NLTT 46484 PPM 165817 SAO 123479 TYC 1023-1942-1 UCAC2 34880461
USNO-B1.0 0986-00370904 uvby98 100169889 WDS J18262+0847B WISEA J182621.80+083651.9 YZC 22 8497
Gaia DR2 4478524169500496000 Gaia DR3 4478524169500496000 Gaia DR1 4478524165189003136

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