J/ApJ/795/41 HD 128311 radial velocity and astrometric data (McArthur+, 2014)
Astrometry, radial velocity, and photometry: the HD 128311 system remixed
with data from HST, HET, and APT.
McArthur B.E., Benedict G.F., Henry G.W., Hatzes A., Cochran W.D.,
Harrison T.E., Johns-Krull C., Nelan E.
<Astrophys. J., 795, 41 (2014)>
=2014ApJ...795...41M 2014ApJ...795...41M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Stars, K-type ; Radial velocities ; Magnitudes ;
Positional data ; Ephemerides
Keywords: astrometry - parallaxes - planetary systems -
planets and satellites: dynamical evolution and stability -
stars: individual: HD 128311, Upsilon Andromedae
Abstract:
We have used high-cadence radial velocity measurements from the
Hobby-Eberly Telescope with published velocities from the Lick 3 m
Shane Telescope, combined with astrometric data from the Hubble Space
Telescope (HST) Fine Guidance Sensors to refine the orbital parameters
of the HD 128311 system, and determine an inclination of
55.95°±14.55° and true mass of 3.789-0.432+0.924 MJUP
for HD 128311 c. The combined radial velocity data also reveal a short
period signal which could indicate a third planet in the system with
an Msin i of 0.133±0.005 MJUPor stellar phenomena. Photometry from
the T12 0.8 m automatic photometric telescope at the Fairborn
Observatory and HST are used to determine a photometric period close
to, but not within the errors of the radial velocity signal. We
performed a cross-correlation bisector analysis of the radial velocity
data to look for correlations with the photometric period and found
none. Dynamical integrations of the proposed system show long-term
stability with the new orbital parameters of over 10 million years.
Our new orbital elements do not support the claims of HD 128311 b and c
being in mean motion resonance.
Description:
The High Resolution Spectrograph (HRS; Tull, 1998SPIE.3355..387T 1998SPIE.3355..387T) at
the HET at McDonald Observatory was used to make the spectroscopic
observations using the iodine absorption cell method (Butler et al.
1996PASP..108..500B 1996PASP..108..500B). Our reduction of HET HRS data is given in
Bean et al. (2007AJ....134..749B 2007AJ....134..749B), which uses the REDUCE package
(Piskunov & Valenti, 2002A&A...385.1095P 2002A&A...385.1095P). Our observations include a
total of 355 high-resolution spectra which were obtained between 2005
April and 2011 January. Because typically two or more observations
were made in less than 1 hr per night, we observed at 161 epochs with
the HET HRS. The astrometric observations were made with the Hubble
Space Telescope (HST) Fine Guidance Sensor (FGS) 1r, a two-axis
interferometer, in position (POS) "fringe-tracking" mode. Twenty-nine
orbits of HST astrometric observations were made between 2007 December
and 2009 August.
Objects:
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RA (ICRS) DE Designation(s)
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14 36 00.56 +09 44 47.5 HD 128311 = HIP 71395
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 27 356 HET Relative Radial Velocities for HD128311
table7.dat 754 470 HST Astrometric Data for HD128311
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See also:
III/47 : Stellar Radial Velocities 0-20 hrs (Evans 1967)
I/255 : The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)
J/A+A/596/A116 : Radial velocities of K-M dwarfs (Sperauskas+, 2016)
J/ApJ/715/1203 : υ Andromedae system with HST (McArthur+, 2010)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d JD Julian Date of observation
16- 21 F6.2 m/s RVel Relative radial velocity
23- 27 F5.2 m/s e_RVel Error in RVel (1)
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Note (1): Errors as modeled; no additional noise error to be added.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- obsID HST observation identifier
11- 18 A8 --- Mode HST observing mode; POSITION or TRANSFER
20- 28 A9 --- TarID Raw target ID from proposal
30- 34 I5 --- Prop Proposal number of observation
36- 38 I3 --- Star Star number of observation from proposal
40- 44 F5.2 mag pVmag Predicted V band magnitude
46- 50 F5.2 mag aVmag Actual V band magnitude
52- 60 F9.5 deg RApdeg Predicted Right Ascension in
decimal degrees (J2000)
62- 70 F9.5 deg DEpdeg Predicted Declination in
decimal degrees (J2000)
72- 79 F8.4 deg RAV1 Right Ascension of V1 telescope axis
81- 90 F10.6 deg DEV1 Declination of V1 telescope axis
92-100 F9.5 deg rollV3 Roll about V3 of telescope
102-113 F12.6 km Xpos X position of telescope
115-126 F12.6 km Ypos Y position of telescope
128-139 F12.6 km Zpos Z position of telescope
141-149 F9.6 km/s Xvel X velocity of telescope
151-159 F9.6 km/s Yvel Y velocity of telescope
161-169 F9.6 km/s Zvel Z velocity of telescope
171-181 F11.3 d OJD Observation Julian Date; corrected
183-193 F11.5 d MJD Modified Julian observation time
195-198 I4 yr Obs.Y Year of the observation
200-202 I3 d Obs.D Day of the year of the observation
204-211 A8 "h:m:s" Obs.time Time of the observation
213 I1 --- Astro [1] HST Fine Guidance Sensor (FGS) used as
the astrometer
215-219 A5 --- Filt Filter used for observation
221-222 I2 --- Set Set number of observation group
224 I1 km/s E+XVel Earth plus HST X velocity
226 I1 km/s E+YVel Earth plus HST Y velocity
228 I1 km/s E+ZVel Earth plus HST Z velocity
230-239 F10.5 arcsec Xave Uncorrected X position calculated by average
241-249 F9.5 arcsec Yave Uncorrected Y position calculated by average
251-257 F7.5 arcsec e_Xave Standard deviation in Xave
259-265 F7.5 arcsec e_Yave Standard deviation in Yave
267-275 E9.2 arcsec XYcor XY correlation
277-285 E9.2 arcsec CYcov XY covariance
287-300 F14.9 arcsec Xmed Uncorrected X position calculated by median
302-312 F11.7 arcsec Ymed Uncorrected Y position calculated by median
314-320 F7.5 arcsec Xmad X median average deviation
322-328 F7.5 arcsec Ymad Y median average deviation
330-337 E8.2 s exptm Seconds of FINELOCK data
339-342 I4 --- npix Number of samples from FINELOCK interval
344-348 A5 --- VLab-Si Instrument velocity aberration
350 I1 --- VLab-FG S FGS velocity aberration
352-364 F13.9 arcsec XVLab X position of velocity aberration
366-376 F11.7 arcsec YVLab Y position of velocity aberration
378 I1 --- Dom-GS Dominant FGS guider
380-389 F10.4 --- pmtsum Sum of photomultiplier tubes
391-399 F9.4 --- pmtxa Photomultiplier tube from channel xa
401-409 F9.4 --- pmtxb Photomultiplier tube from channel xb
411-419 F9.4 --- pmtya Photomultiplier tube from channel ya
421-429 F9.4 --- pmtyb Photomultiplier tube from channel yb
431-433 I3 --- S-bckgd Number of samples for background
435-438 I4 --- NSamX Number of samples for walkdown
photomultiplier tube diff/sum in X axis
440-446 F7.4 --- xfld/s X photomultiplier tube diff/sum from fine
lock dv interval
448-454 F7.4 --- xwdd/s X photomultiplier tube diff/sum from
walkdown interval
456-461 F6.4 --- k1x Reference X axis S_curve inverse
slope of Upgren69
463-471 F9.6 arcsec xdiff X centroid shift in arcseconds; add to Xmed
473-476 I4 --- NsamY Number of samples for walkdown
photomultiplier tube diff/sum in Y axis
478-484 F7.4 --- yfld/s Y photomultiplier tube diff/sum from fine
lock dv interval
486-492 F7.4 --- ywdd/s Y photomultiplier tube diff/sum from
walkdown interval
494-499 F6.4 --- k1y Reference Y axis S_curve inverse
slope of Upgren69
501-509 F9.6 arcsec ydiff Y centroid shift in arcseconds; add to Ymed
511-518 F8.3 arcsec ctX Course track X position
520-526 F7.3 arcsec ctY Course track Y position
528-533 I6 --- ssAmed Star selector position; theta A
535-540 I6 --- ssBmed Star selector position; theta B
542-552 E11.5 arcsec Xvar Variance of X
554-564 E11.5 arcsec Yvar Variance of Y
566-576 E11.5 arcsec Xmvar Median average deviation variance of X
578-588 E11.5 arcsec Ymvar Median average deviation variance of Y
590-600 F11.4 --- ssA1 Predicted star selector position; theta A
602-612 F11.4 --- ssB1 Predicted star selector position; theta B
614-624 F11.9 --- intrhoA Interpolated rhoA lever arm
626-636 F11.9 --- intkA Interpolated kA lever arm
638-649 F12.9 --- Q1 Spacecraft quaternion
651-662 F12.9 --- Q2 Spacecraft quaternion
664-675 F12.9 --- Q3 Spacecraft quaternion
677-688 F12.9 --- Q4 Spacecraft quaternion
690-701 F12.9 --- Palpha Parallax factor α
703-714 F12.9 --- Pdelta Parallax factor δ
716-727 E12.5 arcsec Xsinfit Sinfit position correction for X
729-742 F14.9 arcsec Xfcqc Final X corrected position with polynomial
drift correction
744-754 F11.7 arcsec Yfcqc Final Y corrected position with polynomial
drift correction
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 18-May-2017