J/ApJS/211/25 Spitzer/IRS debris disk catalog. I. (Chen+, 2014)
The Spitzer Infrared Spectrograph debris disk catalog.
I. Continuum analysis of unresolved targets.
Chen C.H., Mittal T., Kuchner M., Forrest W.J., Lisse C.M., Manoj P.,
Sargent B.A., Watson D.M.
<Astrophys. J. Suppl. Ser., 211, 25 (2014)>
=2014ApJS..211...25C 2014ApJS..211...25C
ADC_Keywords: Spectra, infrared ; Photometry, infrared ; Stars, nearby
Keywords: catalogs; circumstellar matter; infrared: stars; zodiacal dust
Abstract:
During the Spitzer Space Telescope cryogenic mission, Guaranteed Time
Observers, Legacy Teams, and General Observers obtained Infrared
Spectrograph (IRS) observations of hundreds of debris disk candidates.
We calibrated the spectra of 571 candidates, including 64 new IRAS and
Multiband Imaging Photometer for Spitzer (MIPS) debris disks
candidates, modeled their stellar photospheres, and produced a catalog
of excess spectra for unresolved debris disks. For 499 targets with
IRS excess but without strong spectral features (and a subset of 420
targets with additional MIPS 70µm observations), we modeled the IRS
(and MIPS data) assuming that the dust thermal emission was
well-described using either a one- or two-temperature blackbody model.
We calculated the probability for each model and computed the average
probability to select among models. We found that the spectral energy
distributions for the majority of objects (∼66%) were better described
using a two-temperature model with warm (Tgr∼100-500K) and cold
(Tgr∼50-150K) dust populations analogous to zodiacal and Kuiper Belt
dust, suggesting that planetary systems are common in debris disks and
zodiacal dust is common around host stars with ages up to ∼1Gyr. We
found that younger stars generally have disks with larger fractional
infrared luminosities and higher grain temperatures and that
higher-mass stars have disks with higher grain temperatures. We show
that the increasing distance of dust around debris disks is
inconsistent with self-stirred disk models, expected if these systems
possess planets at 30-150AU. Finally, we illustrate how observations
of debris disks may be used to constrain the radial dependence of
material in the minimum mass solar nebula.
Description:
In Chen et al. (2006ApJS..166..351C 2006ApJS..166..351C), we obtained IRS spectra of 59
main-sequence stars with previously reported IRAS 60um excesses. We
augment those data with newly obtained IRS spectra of 64 main-sequence
stars with MIPS 24um and/or IRAS 25um excesses using the SL
(5.2-14.0um) and LL (14.0-38.0um; λ/Δλ∼60) modules
as part of the program "Characterizing Warm Debris around Main
Sequence Stars" (PID 40651 led by PI: J. Houck).
For targets not observed as part of our programs, we downloaded
Cornell Atlas of Spitzer/Infrared Spectrograph Sources (CASSIS;
Lebouteiller et al. 2011ApJS..196....8L 2011ApJS..196....8L) spectra wherever possible.
We assembled MIPS 24 and/or 70um photometry for 473 IRS sources to
calibrate the IRS spectra and better constrain our targets' global
SEDs (see Table 2).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 123 571 Stellar properties
table2.dat 145 571 IRS and MIPS photometry and continuum indices
table3.dat 182 571 Black body fitting parameters
refs.dat 153 140 References
--------------------------------------------------------------------------------
See also:
J/AJ/144/135 : Spitzer 24µm phot. of Hipparcos F stars (Mizusawa+, 2012)
J/ApJ/756/133 : ScoCen debris disks around B- and A-type stars (Chen+, 2012)
J/ApJ/750/98 : 24um observations of AFGKM stars of 3 clusters (Urban+, 2012)
J/ApJ/745/147 : Binaries among debris disk stars (Rodriguez+, 2012)
J/MNRAS/414/500 : Spitzer/IRS ATLAS project source (Hernan-Caballero+, 2011)
J/ApJ/738/122 : ScoCen debris disks Around F- and G-type stars (Chen+, 2011)
J/AJ/141/11 : Spitzer obs. of planet-host stars (Dodson-Robinson+, 2011)
J/ApJ/724/835 : The Spitzer c2d survey of WTTSs. III. (Wahhaj+, 2010)
J/ApJS/188/242 : Variations on debris disks. II. (Kenyon+, 2010)
J/ApJ/705/1646 : Debris disks in Upper Sco (Carpenter+, 2009)
J/ApJ/705/1226 : Planet-bearing stars in Spitzer (Bryden+, 2009)
J/ApJ/705/89 : IRS spectra of solar-type stars (Lawler+, 2009)
J/ApJ/700/L73 : Photospheric fluxes at 24 and 70µm (Kospal+, 2009)
J/ApJ/698/1989 : Spitzer survey of NGC 2451 (Balog+, 2009)
J/ApJ/697/1578 : A debris disk study of Praesepe (Gaspar+, 2009)
J/ApJ/688/597 : Debris disks in NGC 2232 (Currie+, 2008)
J/ApJ/683/114 : IRS spectra of faint IRAS sources (Sargsyan+, 2008)
J/ApJS/179/451 : IR excesses in 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)
J/ApJ/636/1098 : Debris disks around solar-type stars (Bryden+, 2006)
J/ApJ/620/1010 : Spitzer 24µm photometry of A dwarfs (Rieke+, 2005)
J/ApJ/555/932 : IR fluxes of solar-type stars (Spangler+, 2001)
http://irsa.ipac.caltech.edu/data/SPITZER/Enhanced/Imaging/overview.html :
NASA/IPAC Infrared Science Archive - Spitzer products overview
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 22 A22 --- Name Source identifier
24- 26 A3 --- --- [HIP]
27- 32 I6 --- HIP ? Hipparcos identifier (I/311)
34- 35 A2 --- --- [HD]
36- 42 A7 --- HD HD identifier if any
44- 58 A15 --- SpType MK spectral type if any
60- 64 F5.1 pc Dist [8.5/690] Distance
66- 71 F6.3 mag Av [-0.2/2.1] The V band extinction
73- 77 I5 K Teff [3750/17000] Effective temperature (1)
79- 81 F3.1 [cm/s2] log(g) [3/4.5] Log of the surface gravity (1)
83- 88 F6.1 Lsun L* [0.1/1900] Star luminosity
90- 92 F3.1 Msun M* [0.6/5.4]? Star mass
94 A1 --- f_M* [a] Mass estimated from M-L relation (2)
96-100 I5 Myr Age [3/12306]? Star age
102-111 A10 --- Assoc Association identifier
113-123 A11 --- Ref Reference(s) (see refs.dat file)
--------------------------------------------------------------------------------
Note (1): We estimated logg and Teff from mean GCPD (General Catalogue of
Photometric Data; Mermilliod et al. 1997A&AS..124..349M 1997A&AS..124..349M) photometry
using the calibration of Napiwotzki et al. (1993A&A...268..653N 1993A&A...268..653N) and
the rotation correction of Figueras & Blasi (1998A&A...329..957F 1998A&A...329..957F).
Note (2): * = Mass estimated using V band Mass-Luminosity relationship
(Fang & Yan-Ning 2010ChA&A..34..277X 2010ChA&A..34..277X).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 22 A22 --- Name Source identifier
24 A1 --- l_F13 Limit flag on F13
25- 32 F8.2 mJy F13 [2.6/8269]? Spitzer/IRS 13µm flux density
34- 39 F6.2 mJy e_F13 [0.2/487]? Uncertainty in F13
41- 47 F7.2 mJy F24 [0.7/8500]? Spitzer/MIPS 24µm flux density
49- 54 F6.2 mJy e_F24 ? Uncertainty in F24
56- 58 I3 --- r_F24 ? Reference for F24 (see refs.dat file)
60 A1 --- l_F31 Limit flag on F31
61- 69 F9.2 mJy F31 [1.3/82660]? Spitzer/IRS 31µm flux density
71- 76 F6.2 mJy e_F31 ? Uncertainty in F31
78 A1 --- l_F70 Limit flag on F70
79- 87 F9.2 mJy F70 [3.5/12991]? Spitzer/MIPS 70µm flux density
89- 95 F7.2 mJy e_F70 ? Uncertainty in F70
97- 99 I3 --- r_F70 ? Reference for F70 (see refs.dat file)
101-105 F5.2 --- F13/F* ? Disk 13um flux density relative to stellar
107-117 F11.2 --- F24/F* ? Disk 24um flux density relative to stellar
119-124 F6.2 --- F31/F* ? Disk 31um flux density relative to stellar
126-132 F7.2 --- F70/F* ? Disk 70um flux density relative to stellar
134-139 F6.2 --- [13-31] [-11/14] N(13-31µm) continuum index (3)
141-145 F5.2 --- [31-70] [-6/18]? N(31-70µm) continuum index (3)
--------------------------------------------------------------------------------
Note (3): continuum indices are defined from the infrared excesses F1 and
F2 at wavelengths λ1 λ2 as:
N(1-2) = log(λ2F2/λ1F1)/log(λ2/λ1)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 22 A22 --- Name Source identifier
24- 27 F4.1 um amin [0/85.5]? Grain size
29 A1 --- l_logP0 Limit flag on logP0
30- 33 F4.1 [-] logP0 [-4/0]? Log probability of zero blackbodies
35 A1 --- f_logP0 [n] Indicates a NaN logP0
37 A1 --- l_logP1 Limit flag on logP1
38- 41 F4.1 [-] logP1 [-4/0]? Log probability of one blackbody
43 A1 --- f_logP1 [n] Indicates a NaN logP1
45 A1 --- l_logP2 Limit flag on logP2
46- 49 F4.1 [-] logP2 [-4/0]? Log probability of two blackbodies
51- 53 I3 K Tgr [30/500]? Grain temperature in single-T model
55- 57 I3 K E_Tgr ? Upper limit uncertainty in Tgr
59- 61 I3 K e_Tgr ? Lower limit uncertainty in Tgr
63- 68 F6.1 AU D [0.6/1208]? Disk distance in single-T model
70- 76 E7.2 --- LIR/L* ? Disk IR luminosity (relative to stellar
luminosity) in single-T model
78- 83 E6.0 --- E_LIR/L* ? Upper limit uncertainty in LIR/L*
85- 90 E6.0 --- e_LIR/L* ? Lower limit uncertainty in LIR/L*
92- 98 E7.2 0.012Mgeo Md ? Dust mass (in lunar masses) in single-T model
100-105 F6.1 --- 1chi2 ? χ2 of the single-T model
107-109 I3 K Tgr1 ? First grain temperature in the two-T model
111-113 I3 K E_Tgr1 ? Upper limit uncertainty in Tgr1
115-117 I3 K e_Tgr1 ? Lower limit uncertainty in Tgr1
119-123 F5.1 AU D1 ? First disk distance in the two-T model
125-131 E7.2 --- LIR/L*1 ? First disk IR luminosity (relative to star)
in the two-T model
133-139 E7.2 0.012Mgeo Md1 ? First dust mass (in lunar masses) in the
two-T model
141-143 I3 K Tgr2 ? Second grain temperature in the two-T model
145-147 I3 K E_Tgr2 ? Upper limit uncertainty in Tgr2
149-151 I3 K e_Tgr2 ? Lower limit uncertainty in Tgr2
153-158 F6.1 AU D2 ? Second disk distance in the two-T model
160-166 E7.2 --- LIR2/L* ? Second disk IR luminosity (relative to star)
in the two-T model
168-174 E7.2 0.012Mgeo Md2 ? Second dust mass (in lunar masses) in the
two-T model
176-182 F7.1 --- 2chi2 ? χ2 of the two-T model
--------------------------------------------------------------------------------
Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Ref Reference code
5- 23 A19 --- BibCode Bibcode
25- 48 A24 --- Aut Author's name(s)
50-153 A104 --- Comm Comment
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Mittal et al., Paper II, 2015ApJ...798...87M 2015ApJ...798...87M
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-May-2014