J/ApJ/667/308 Weak-line T Tauri in Spitzer c2d Survey. II. (Cieza+, 2007)
The Spitzer c2d Survey of weak-line T Tauri stars.
II. New constraints on the timescale for planet building.
Cieza L., Padgett D.L., Stapelfeldt K.R., Augereau J.-C., Harvey P.,
Evans II N.J., Merin B., Koerner D., Sargent A., Van Dishoeck E.F.,
Allen L., Blake G., Brooke T., Chapman N., Huard T., Lai S.-P., Mundy L.,
Myers P.C., Spiesman W., Wahhaj Z.
<Astrophys. J., 667, 308-328 (2007)>
=2007ApJ...667..308C 2007ApJ...667..308C
ADC_Keywords: Stars, pre-main sequence ; Infrared sources
Mission_Name: Spitzer
Keywords: infrared: stars -
open clusters and associations: individual (IC 348) -
planetary systems: protoplanetary disks - stars: pre-main sequence
Abstract:
One of the central goals of the Spitzer Legacy Project "From Cores to
Disks" (c2d) is to determine the frequency of circumstellar disks
around weak-line T Tauri stars (WTTSs) and to study the properties and
evolutionary status of these disks. Here we present a census of disks
for a sample of over 230 WTTSs located in the c2d IRAC and MIPS maps
of the Ophiuchus, Lupus, and Perseus Molecular Clouds.
Description:
As part of the c2d Legacy Project, Spitzer has mapped 13.0deg2 of
three nearby star-forming regions, Perseus, Ophiuchus, and Lupus, with
IRAC (3.6, 4.5, 5.8, and 8.0um), and 22.1 deg2 with MIPS (24um).
In addition to the data from the c2d Legacy project, we use
observations of IC 348 taken as part of the IRAC and MIPS Guaranteed
Time Observer (GTO) programs (Program ID 36 and 58, respectively).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 125 232 Weak-line T Tauri stars: Spitzer data
table2.dat 95 232 Weak-line T Tauri stars: non-Spitzer data
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See also:
J/A+AS/123/329 : New weak-line T Tauri stars in Lupus (Krautter+ 1997)
J/AJ/131/1574 : Infrared photometry of IC348 members (Lada+, 2006)
J/ApJ/649/862 : IR phot. of IC 348 pre-main-sequence stars (Cieza+, 2006)
J/A+A/454/595 : X-ray emission of T Tau stars in Lupus 3 (Gondoin, 2006)
J/A+A/479/827 : UBVR light curves of weak-line T Tauri stars (Grankin+, 2008)
J/ApJS/177/551 : Spitzer c2d survey of Lupus dark clouds (Merin+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Object Identification (G1)
17- 24 F8.4 deg RAdeg Right Ascension in decimal degrees (J2000) (G2)
26- 33 F8.4 deg DEdeg Declination in decimal degrees (J2000)
35- 42 E8.2 mJy F3.6 ? IRAC 3.6 micron flux
44- 51 E8.2 mJy e_F3.6 ? Error in F3.6
53- 60 E8.2 mJy F4.5 ? IRAC 4.5 micron flux
62- 69 E8.2 mJy e_F4.5 ? Error in F4.5
71- 78 E8.2 mJy F5.8 ? IRAC 5.8 micron flux
80- 87 E8.2 mJy e_F5.8 ? Error in F5.8
89- 96 E8.2 mJy F8.0 ? IRAC 8.0 micron flux
98-105 E8.2 mJy e_F8.0 ? Error in F8.0
107-114 E8.2 mJy F24 ? MIPS 24 micron flux
116-123 E8.2 mJy e_F24 ? Error in F24um
125 A1 --- Disk Disk detected? (Y/N)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Object Identification (G1)
17- 24 F8.4 deg RAdeg Right Ascension in decimal degrees (J2000) (G2)
26- 33 F8.4 deg DEdeg Declination in decimal degrees (J2000) (G2)
35- 39 A5 --- SpT MK spectral type
41- 44 F4.1 0.1nm EWHa Hα equivalent width in Angstroms (1)
46- 50 F5.2 mag Vmag ? The V band magnitude (2)
52- 55 F4.2 mag e_Vmag ? Error in Vmag (2)
57- 61 F5.2 mag Rcmag ? The Rc band magnitude (2)
63- 66 F4.2 mag e_Rcmag ? Error in Rcmag (2)
68- 72 F5.2 mag Icmag ? The Ic band magnitude (2)
74- 77 F4.2 mag e_Icmag ? Error in Icmag (2)
79- 83 F5.2 mag Jmag The J band magnitude, from 2MASS (II/246)
85- 89 F5.2 mag Hmag The H band magnitude, from 2MASS (II/246)
91- 95 F5.2 mag Ksmag The Ks band magnitude, from 2MASS (II/246)
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Note (1): a positive value denotes emission,
a negative value denotes absorption
Note (2): VRcIc observations from Hughes et al. (1994AJ....108.1071H 1994AJ....108.1071H)
and Wichmann et al. 1997, Cat. J/A+A/320/185
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Global notes:
Note (G1): IC348-NNN is Cl* IC 348 CPS NNN in Simbad
Note (G2): Objects localisation:
* objects with RA<57.00° are in IC348
* objects with 240°>RA>234° are in Lupus I
* objects with 244°>RA>240° are in Lupus III
* objects with RA>245° are in Ophiuchus
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History:
From electronic version of the journal
References:
Padgett et al., Paper I 2006ApJ...645.1283P 2006ApJ...645.1283P
Wahhaj et al., Paper III 2010ApJ...724..835W 2010ApJ...724..835W Cat. J/ApJ/724/835
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Oct-2009