J/AJ/159/233 Observations of binary stars with the DSSI. IX. (Horch+, 2020)
Observations of binary stars with the Differential Speckle Survey Instrument.
IX. Observations of known and suspected binaries, and a partial survey of Be
stars.
Horch E.P., van Belle G.T., Davidson J.W., Willmarth D., Fekel F.C.,
Muterspaugh M., Casetti-Dinescu D.I., Hahne F.W., Granucci N.M., Clark C.,
Winters J.G., Rupert J.D., Weiss S.A., Colton N.M., Nusdeo D.A., Henry T.J.
<Astron. J., 159, 233 (2020)>
=2020AJ....159..233H 2020AJ....159..233H
ADC_Keywords: Stars, double and multiple; Stars, Be; Spectra, optical;
Radial velocities; Interferometry
Keywords: Interferometric binary stars ; Spectroscopic binary stars ;
Visual binary stars ; Astronomical techniques ; Be stars
Abstract:
We report 370 measures of 170 components of binary and multiple-star
systems, obtained from speckle imaging observations made with the
Differential Speckle Survey Instrument (DSSI) at Lowell Observatory's
Discovery Channel Telescope in 2015 through 2017. Of the systems
studied, 147 are binary stars, 10 are seen as triple systems, and 1
quadruple system is measured. Seventy-six high-quality nondetections
and 15 newly resolved components are presented in our observations.
The uncertainty in relative astrometry appears to be similar to our
previous work at Lowell, namely, linear measurement uncertainties of
approximately 2mas, and the relative photometry appears to be
uncertain at the 0.1-0.15mag level. Using these measures and those in
the literature, we calculate six new visual orbits, including one for
the Be star 66Oph and two combined spectroscopic-visual orbits. The
latter two orbits, which are for HD22451 (YSC127) and HD185501
(YSC135), yield individual masses of the components at the level of 2%
or better, and independent distance measures that in one case agrees
with the value found in the Gaia DR2 and in the other disagrees at the
2σ level. We find that HD22451 consists of an F6V+F7V pair with
orbital period of 2401.1±3.2days and masses of 1.342±0.029 and
1.236±0.026M☉. For HD185501, both stars are G5 dwarfs that
orbit one another with a period of 433.94±0.15days, and the masses
are 0.898±0.012 and 0.876±0.012M☉. We discuss the
details of both the new discoveries and the orbit objects.
Description:
The speckle observations presented here were taken on several runs
beginning in 2015-March and ending in 2017-May using the Differential
Speckle Survey Instrument (DSSI) at Lowell Observatory's Discovery
Channel Telescope (LDT, formerly DCT).
Further spectroscopic observations were obtained in 2012-October with
the Kitt Peak National Observatory (KPNO) 0.9m auxillary coude feed
telescope and the coude spectrograph.
YSC 127 and YSC 135 have been reobserved and seven KPNO observations
obtained with various combinations of KPNO telescopes and instruments
are listed in Table 2. The spectra have resolving powers that range
from 16500 to 72000.
An extensive number of additional observations were acquired from 2015
through 2019-April at Fairborn Observatory in southeast Arizona.
During that period, we obtained 68 spectra of YSC127 and 39 spectra of
YSC135 with the Tennessee State University 2m Astronomical
Spectroscopic Telescope (AST) and a fiber-fed echelle spectrograph.
The AST spectra (coverage of 3800-8600Å) have a resolving power of
25000 at 6000Å and signal-to-noise ratios of about 85 for YSC127
and 100 for YSC135.
Objects:
-----------------------------------------------------------
RA (ICRS) DE Designation(s) (Period)
-----------------------------------------------------------
03 39 06.47 +52 49 08.9 YSC 127 = HD 22451 (P=2401.1)
19 37 59.22 +33 53 35.8 YSC 135 = HD 185501 (P=433.94)
-----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 71 12 Telescope and instrument combinations for
spectroscopic observations
table3.dat 60 75 Radial velocity observations of YSC 127
table4.dat 60 46 Radial velocity observations of YSC 135
table5.dat 85 370 Binary star speckle measures
table7.dat 106 76 5-sigma detection limits for high quality
nondetections
table8.dat 106 6 Visual orbital elements for six systems
--------------------------------------------------------------------------------
See also:
B/wds : The Washington Visual Double Star Catalog (Mason+, 2001-2014)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
V/117 : Geneva-Copenhagen Survey of Solar neighbourhood (Holmberg+, 2007)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/AJ/111/370 : Orbits of 37 close visual systems (Hartkopf+ 1996)
J/AJ/117/1890 : Hipparcos binaries (Mason+, 1999)
J/A+A/341/121 : Visual binary orbits and masses (Soederhjelm 1999)
J/ApJS/141/503 : Radial Velocities for 889 late-type stars (Nidever+,2002)
J/MNRAS/395/593 : ASAS chromospheric. active eclipsing bin. (Parihar+ 2009)
J/AJ/140/1623 : PHASES diff. astro. data archive. II. (Muterspaugh+,2010)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/A+A/519/A78 : BVR light curves of KR Com (Zasche+, 2010)
J/AJ/141/45 : Speckle observations of HIP stars (Horch+, 2011)
J/AJ/142/185 : Properties of eclipsing binary stars HY Vir (Lacy+,2011)
J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)
J/AJ/145/111 : Radial velocities of 5 spectro. binaries (Fekel+,2013)
J/ApJ/786/120 : Spectropolarimetric survey Be stars (Draper+, 2014)
J/AJ/150/136 : Speckle interferometry at USNO. XX. (Hartkopf+, 2015)
J/AJ/150/151 : DSSI obs. of binaries. VI. Measures in 2014 (Horch+,2015)
J/AJ/152/46 : Spectro. orbits for 15 late-type stars (Willmarth+,2016)
J/AJ/153/212 : Obs. of binary stars at the WIYN telescope (Horch+, 2017)
J/AJ/153/208 : LCES HIRES/Keck RV Exoplanet Survey (Butler+, 2017)
J/AJ/157/56 : DSSI obs. of binary & trinary star systems (Horch+, 2019)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 "date" Date Date of observation
13 A1 --- f_Date [b] Flag on observation's date (1)
15- 19 I5 d HJD [56209/58415] Heliocentric Julian Date of
observation, HJD-2400000
21- 35 A15 --- Tel Telescope used
37- 65 A29 --- Inst Instrument grating, CCD
67- 71 I5 --- R [16500/72000] Resolution
--------------------------------------------------------------------------------
Note (1):
b = First observation of Astronomical Spectroscopic Telescope (AST) series.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.4 d HJD [56209/58663] Heliocentric Julian date,
HJD-2400000
14- 18 F5.3 --- Phase [0.003/0.94] Fractional phase
21- 25 F5.1 km/s RVA [-33.8/-9.3] Radial velocity of primary
28- 31 F4.1 km/s (O-C)A [-0.6/1.1] Velocity residual of primary
34- 36 F3.1 --- WeightA [0/1] Weight of primary velocity
39- 43 F5.1 km/s RVB [-29.8/-3.6] Radial velocity of secondary
46- 49 F4.1 km/s (O-C)B [-1.3/0.7] Velocity residual of secondary
52- 54 F3.1 --- WeightB [0/0.6] Weight of secondary velocity
57- 60 A4 --- Obs Observatory source (1)
--------------------------------------------------------------------------------
Note (1): Observatories as follows:
KPNO = Kitt Peak National Observatory;
Fair = Fairborn Observatory.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.4 d HJD [56209/58533] Heliocentric Julian date;
HJD-2400000
14- 18 F5.3 --- Phase [0.06/0.97] Fractional phase
21- 25 F5.1 km/s RVA [-47/-16.1] Radial velocity of primary
28- 31 F4.1 km/s (O-C)A [-0.6/0.4] Velocity residual of primary
34- 36 F3.1 --- WeightA [1] Weight of primary velocity
39- 43 F5.1 km/s RVB [-48.6/-16.6] Radial velocity of secondary
46- 49 F4.1 km/s (O-C)B [-0.6/0.4] Velocity residual of secondary
52- 54 F3.1 --- WeightB [1] Weight of secondary velocity
57- 60 A4 --- Obs Observatory source (1)
--------------------------------------------------------------------------------
Note (1): Observatories as follows:
KPNO = Kitt Peak National Observatory;
Fair = Fairborn Observatory.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- WDS Washington Double Star number
(HHMMm+DDMM; J2000 -- see B/wds)
12- 22 A11 --- OName Other designations
24- 36 A13 --- Desig Binary discover designation
39- 44 I6 --- HIP [5434/117730] Hipparcos Catalogue number
(see I/311)
46- 54 F9.4 yr Date Besselian date of observation
56- 60 F5.1 deg PA [3.4/353.7] Position angle of secondary
relative to primary (1)
62- 67 F6.4 arcsec Sep [0.02/2.42] Separation of the two stars
69 A1 --- l_dmag Limit flag on dmag
71- 74 F4.2 mag dmag [0/5.31] Magnitude difference of pair in filter
used
76- 78 I3 nm lambda [692/880] Center wavelength of filter used
80- 81 I2 nm dlambda [40/50] Filter transmission full width at half
maximum
83- 85 A3 --- fcat Catalog entry flags (2)
--------------------------------------------------------------------------------
Note (1): North through East defining the positive sense of PA
Note (2): Flags as follows:
a = Quadrant ambiguous;
b = Quadrant inconsistent with previous measures in the 4th
Interferometric Catalog;
c = Photometry for this observation appears as an upper limit because the
observation may be affected by speckle decorrelation as discussed in
Section 4.3.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Name (WDS format; HHMMm+DDMM, J2000)
13- 18 I6 --- HIP [531/114154]? Hipparcos Number (see I/311)
20- 28 F9.4 yr Date Besselian Year
30- 33 F4.2 mag delta-m1 [2.28/4.84] 692nm detection limit at 0.2arcsec
35- 38 F4.2 mag delta-m2 [4.52/7.49] 692nm detection limit at 1.0arcsec
40- 43 F4.2 mag delta-m3 [3.07/4.99] 880nm detection limit at 0.2arcsec
45- 48 F4.2 mag delta-m4 [4.54/8.26] 880nm detection limit at 1.0arcsec
50- 56 A7 --- OT Be star
58- 71 A14 --- OName Other name(s)
73- 76 A4 --- Cat Binarity notes (1)
78-104 A27 --- Notes Notes
106 A1 --- f_Notes [a] Flag on Notes (2)
--------------------------------------------------------------------------------
Note (1): Catalog as follows:
HIPS = star suspected of binarity from the Hipparcos Catalog;
van Leeuwen, 2007, I/311
GC = star found to be a spectroscopic binary in the Geneva-Copenhagen
Catalog of Nordstrom+, 2004, V/117
Note (2):
a = The separation of this pair has been quickly closing since its
discovery in 2010. The non-detection in this case is probably the
result of a combination of large magnitude difference and small
separation.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Desig Binary discover designation
12- 16 I5 --- HIP [23166/88149] Hipparcos Catalogue number
18- 23 F6.2 yr Per [53/134] Orbital period
25- 29 F5.2 yr e_Per [0.6/13] Uncertainty in Per
31- 36 F6.4 arcsec a [0.15/0.94] Semi-major axis
38- 43 F6.4 arcsec e_a [0.004/0.04] Uncertainty in a
45- 50 F6.2 deg i [52/135] Inclination
52- 56 F5.2 deg e_i [0.8/14] Uncertainty in inclination
58- 63 F6.2 deg Omega [0/339] Position angle of the nodal point
(Ω)
65- 69 F5.2 deg e_Omega [0.8/27] Uncertainty in Omega
71- 77 F7.2 yr T [2007/2101] Besselian date of periastron passage
79- 83 F5.2 yr e_T [0.6/39] Uncertainty in T
85- 89 F5.3 --- e [0.11/0.845] Eccentricity
91- 95 F5.3 --- e_e [0.01/0.2] Uncertainty in e
97-101 F5.1 deg omega [71/357] Position angle of periastron (ω)
in the plane of the true orbit
103-106 F4.1 deg e_omega [2.3/51] Uncertainty in omega
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Horch et al. Paper I. 2009AJ....137.5057H 2009AJ....137.5057H
Horch et al. Paper II. 2011AJ....141...45H 2011AJ....141...45H Cat. J/AJ/141/45
Horch et al. Paper III. 2011AJ....141..180H 2011AJ....141..180H
Horch et al. Paper IV. 2012AJ....144..165H 2012AJ....144..165H
Horch et al. Paper V. 2015AJ....149..151H 2015AJ....149..151H
Horch et al. Paper VI. 2015AJ....150..151H 2015AJ....150..151H Cat. J/AJ/150/151
Horch et al. Paper VII. 2017AJ....153..212H 2017AJ....153..212H Cat. J/AJ/153/212
Horch et al. Paper VIII. 2019AJ....157...56H 2019AJ....157...56H Cat. J/AJ/157/56
(End) Prepared by [AAS], Coralie Fix [CDS], 09-Jun-2020