J/ApJ/745/147 Binaries among debris disk stars (Rodriguez+, 2012)
Binaries among debris disk stars.
Rodriguez D.R., Zuckerman B.
<Astrophys. J., 745, 147 (2012)>
=2012ApJ...745..147R 2012ApJ...745..147R
ADC_Keywords: Stars, ages ; Stars, distances ; Stars, double and multiple ;
Infrared sources
Keywords: binaries: general - infrared: stars -
planets and satellites: formation
Abstract:
We have gathered a sample of 112 main-sequence stars with known debris
disks. We collected published information and performed adaptive
optics observations at Lick Observatory to determine if these debris
disks are associated with binary or multiple stars. We discovered a
previously unknown M-star companion to HD 1051 at a projected
separation of 628 AU. We found that 25%±4% of our debris disk
systems are binary or triple star systems, substantially less than the
expected ∼50%. The period distribution for these suggests a relative
lack of systems with 1-100 AU separations. Only a few systems have
blackbody disk radii comparable to the binary/triple separation.
Together, these two characteristics suggest that binaries with
intermediate separations of 1-100 AU readily clear out their disks. We
find that the fractional disk luminosity, as a proxy for disk mass, is
generally lower for multiple systems than for single stars at any
given age. Hence, for a binary to possess a disk (or form planets) it
must either be a very widely separated binary with disk particles
orbiting a single star or it must be a small separation binary with a
circumbinary disk.
Description:
We had three adaptive optics (AO) runs at Lick Observatory with IRCAL,
the infrared camera which has field of view of 20" and thus can detect
companions out to nearly 1000 AU at 100 pc in 2009 June, October and
2010 August.
There is some overlap between the DEBRIS (Matthews et al.
2010A&A...518L.135M 2010A&A...518L.135M) sample and our own sample of 112 dusty stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 112 List of all debris disks stars in our sample
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See also:
B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2013)
J/AJ/143/135 : Ages of A, F, G + K-type stars in DEBRIS survey (Vican+, 2012)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/AJ/141/11 : Spitzer obs. of planet-host stars (Dodson-Robinson+, 2011)
J/MNRAS/403/1089 : SUNS and DEBRIS surveys target selection (Phillips+, 2010)
J/ApJ/696/L84 : Primordial disks in binary systems (Cieza+, 2009)
J/ApJS/179/451 : Predicted IR excesses for protoplanetary disks (Kenyon+, 2008)
J/ApJ/660/1556 : Characterization of dusty debris disks (Rhee+, 2007)
J/ApJ/653/675 : Spitzer 24µm photometry of A dwarfs (Su+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Star name
13- 16 A4 --- --- [HIP ]
17- 22 I6 --- HIP Star HIP number
24- 25 A2 --- SpT MK spectral type
27- 30 F4.1 pc Dist [3.2/99.9] Heliocentric distance
32- 47 A16 --- Inst Detection (IRAS/Gemini/Keck/IRS/ISO and/or MIPS)
49 A1 --- f_Inst [a] Adapted results (1)
51- 53 I3 K Tdust [40/358] Dust temperature
55- 61 E7.2 --- LIR/L* [4.5e-06/0.032] Fractional infrared luminosity
(LIR/L*)
63- 68 F6.2 AU Rdust [0.85/481] Disk radius for blackbody
grains (see Section 5)
70 A1 --- Mult? [Y/N] Multiple? (Yes or No)
72 A1 --- f_Mult? [b] Controversial binarity (1)
74- 77 I4 Myr Age [10/5000] Age
79- 87 A9 --- Ref Reference code(s) (2)
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Note (1): Flag as follows:
a = Tdust, LIR/L*, and Rdust have been modified from those given in
the cited references so that the peak of the blackbody fit lies at the
sole MIPS 70um excess (see Section 5 for more details).
b = While HIP 51658 is listed in the seventh spectroscopic binary orbit
catalog with a period of 292.56 days (Batten et al. 1978PDAO...15..121B 1978PDAO...15..121B),
the quality flag is set to the lowest value indicating the binary nature
is in question. More recent catalogs (see Pourbaix et al. 2004,
Cat. B/sb9) no longer list this system.
Note (2): Reference as follows:
Ch05 = Chen et al. 2005ApJ...634.1372C 2005ApJ...634.1372C
Re08 = Rebull et al. 2008ApJ...681.1484R 2008ApJ...681.1484R
Rh07 = Rhee et al. 2007, Cat. J/ApJ/660/1556
So05 = Song et al. 2005Natur.436..363S 2005Natur.436..363S
Su06 = Su et al. 2006, Cat. J/ApJ/653/675
We11 = Weinberger et al. 2011ApJ...726...72W 2011ApJ...726...72W
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 01-Aug-2013