J/ApJ/705/1226 Planet-bearing stars in Spitzer (Bryden+, 2009)
Planets and debris disks: results from a Spitzer/MIPS search for infrared
excess.
Bryden G., Beichman C.A., Carpenter J.M., Rieke G.H., Stapelfeldt K.R.,
Werner M.W., Tanner A.M., Lawler S.M., Wyatt M.C., Trilling D.E.,
Su K.Y.L., Blaylock M., Stansberry J.A.
<Astrophys. J., 705, 1226-1236 (2009)>
=2009ApJ...705.1226B 2009ApJ...705.1226B
ADC_Keywords: Photometry, infrared ; Stars, ages ; Spectral types ; Planets
Keywords: circumstellar matter - infrared: stars - Kuiper Belt -
planetary systems
Abstract:
Using the MIPS camera on the Spitzer Space Telescope, we have searched
for debris disks around 104 stars known from radial velocity studies
to have one or more planets. Combining this new data with 42 already
published observations of planet-bearing stars, we find that 14 of the
146 systems have IR excess at 24 and/or 70um. Only one star, HD 69830,
has IR excess exclusively at 24um, indicative of warm dust in the
inner system analogous to that produced by collisions in the solar
system's asteroid belt. For the other 13 stars with IR excess the
emission is stronger at 70um, consistent with cool dust (<100K)
located beyond 10AU, well outside of the orbital location of the known
planets.
Description:
Throughout this paper, we contrast between two samples - stars with
known radial-velocity planets and stars without. The bulk of the
planet-bearing sample comes from two programs - an initial guaranteed
time (GTO) survey with observations from 2004 to 2006 (PI: G. Rieke)
and a later general observer (GO) survey from 2007 to 2008 (PI: J.
Carpenter). The early dataset consists of 46 planet-bearing stars, 25
already discussed by Beichman et al. (2005ApJ...622.1160B 2005ApJ...622.1160B) and 21
newly presented here, while the later data set has 71 additional MIPS
observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 107 149 Spitzer observations of planet-bearing stars
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/ApJ/700/L73 : Photospheric fluxes at 24 and 70µm (Kospal+, 2009)
J/A+A/485/571 : Metallicities + activities of southern stars (Jenkins+, 2008)
J/ApJS/179/451 : IR excesses for protoplanetary disks (Kenyon+, 2008)
J/ApJ/660/1556 : Characterization of dusty debris disks (Rhee+, 2007)
J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)
J/MNRAS/372/163 : Activity indices for southern stars (Jenkins+, 2006)
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)
J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 2003)
J/MNRAS/328/45 : Late-type stars members of young groups (Montes+, 2001)
J/AJ/111/439 : Chromospheric emission in late-type stars. (Henry+ 1996)
http://nexsci.caltech.edu/archives/nsted/ : NStED homepage
http://exoplanet.eu/ : the Extrasolar Planets Encyclopaedia
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 14 A3 --- n_Name [c-h, ] Remarks about the star (1)
16- 23 A8 --- OName Other designation
25- 31 A7 --- SpType MK spectral type from NStED (the NASA Star and
Exoplanet Database)
33- 37 F5.1 pc Dist ? Distance from the Hipparcos catalogue
39- 42 F4.2 mag Ksmag 2MASS Ks-band magnitude
44- 47 F4.1 Gyr Age ? Estimated age
49- 61 A13 --- r_Age Age reference(s) (2)
63- 68 F6.1 mJy F24 ? Spitzer/MIPS 24um flux (3)
70- 73 F4.2 --- F24/F ? Observed flux relative to the expected
stellar flux (Fν/Fν*) at 24um
75- 80 F6.1 mJy F70 Spitzer/MIPS 70um flux (3)
82- 86 F5.1 mJy e_F70 F70 uncertainty
88- 92 F5.1 --- F70/F Observed flux relative to the expected
stellar flux (Fν/Fν,*_) at 70um
94- 97 F4.1 --- chi Significance of excess (Equation (1))
99 A1 --- l_Lum Limit flag on Lum
100-104 F5.1 10-5 Lum Luminosity ratio Ldust/L* at 70um (4)
106-107 A2 --- Ref Spitzer reference (5)
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Note (1): Flag as follows:
c = Binary or triple star; see Mugrauer & Neuhauser (2009A&A...494..373M 2009A&A...494..373M) for
individual references.
d = Star with excess 70um emission.
e = Star with excess 24um emission.
f = Based on the Hubble Space Telescope (HST) astrometry, Bean et al.
(2007AJ....134..749B 2007AJ....134..749B) conclude that the companion of HD 33636 is not
a planet but rather a low-mass star in a near face-on orbit. While
Beichman et al. (2005ApJ...622.1160B 2005ApJ...622.1160B) identified HD 33636 as a
planet-bearing star with strong 70um excess, we no longer include
this star in our planet sample.
g = Radial-velocity observations by Moro-Martin et al. (2007ApJ...658.1312M 2007ApJ...658.1312M)
and Wright et al. (2007ApJ...657..533W 2007ApJ...657..533W) do not confirm the planet
around HD 150706. This star is not included in our sample.
h = Radial-velocity observations by Eggenberger et al. (2007A&A...466.1179E 2007A&A...466.1179E)
do not confirm the planet around HD 188753A. This star is not included
in our sample.
Note (2): Age reference as follows:
1 = Gray et al. 2003, Cat. J/AJ/126/2048, 2006, Cat. J/AJ/132/161;
2 = Jenkins et al. 2006, Cat. J/MNRAS/372/163, 2008, Cat. J/A+A/485/571;
3 = Saffe et al. 2005A&A...443..609S 2005A&A...443..609S;
4 = Henry et al. 1996, Cat. J/AJ/111/439;
5 = Wright et al. 2004, Cat. J/ApJS/152/261;
6 = Soderblom 1985AJ.....90.2103S 1985AJ.....90.2103S;
7 = Barnes 2007ApJ...669.1167B 2007ApJ...669.1167B;
8 = Hall et al. 2007AJ....133..862H 2007AJ....133..862H;
9 = Backman et al. 2009ApJ...690.1522B 2009ApJ...690.1522B;
10 = Montes et al. 2001, Cat. J/MNRAS/328/45;
11 = Butler et al. 2006, Cat. J/ApJ/646/505;
12 = This paper.
Note (3): Color corrections have not been applied. For cold emission
(∼50K), the color-corrected 70um flux is as much as ∼10% higher.
Note (4): Minimum Ldust/L* based solely on the 70um emission (Equation (2)).
Note (5): Spitzer data reference as follows:
1 = Beichman et al. 2005ApJ...622.1160B 2005ApJ...622.1160B;
2 = This paper;
2a = from Spitzer PID 41, PI: G. Rieke;
2b = PID 40096, PI J. Carpenter;
2c = PID 30590, PI D. Koerner;
2d = PID 72, PI F. Low;
3 = Moro-Martin et al. 2007ApJ...658.1312M 2007ApJ...658.1312M;
4 = Backman et al. 2009ApJ...690.1522B 2009ApJ...690.1522B;
5 = Beichman et al. 2005ApJ...626.1061B 2005ApJ...626.1061B;
6 = Beichman et al. 2006ApJ...652.1674B 2006ApJ...652.1674B;
7 = Smith et al. 2006ApJ...644L.125S 2006ApJ...644L.125S;
8 = Trilling et al. 2007ApJ...658.1289T 2007ApJ...658.1289T;
9 = Gautier et al. 2007ApJ...667..527G 2007ApJ...667..527G
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 05-Dec-2011