J/AJ/131/1574 Infrared photometry of IC348 members (Lada+, 2006)
Spitzer observations of IC 348: the disk population at 2-3 million years.
Lada C.J., Muench A.A., Luhman K.L., Allen L., Hartmann L., Megeath T.,
Myers P., Fazio G., Wood K., Muzerolle J., Rieke G., Siegler N., Young E.
<Astron. J., 131, 1574-1607 (2006)>
=2006AJ....131.1574L 2006AJ....131.1574L
ADC_Keywords: Clusters, open ; Photometry, infrared
Keywords: circumstellar matter - infrared: stars -
open clusters and associations: individual (IC 348)
Abstract:
We present near- and mid-infrared photometry obtained with the Spitzer
Space Telescope of 300 known members of the IC 348 cluster. We merge
this photometry with existing ground-based optical and near-infrared
photometry in order to construct optical-infrared spectral energy
distributions (SEDs) for all the cluster members and present a
complete atlas of these SEDs.
Description:
As a part of the Guaranteed Time Observations (GTO) program of the
IRAC (Infrared Array Camera) and MIPS (Multiband Imaging Photometer
for Spitzer) instrument teams, we obtained images of IC 348 at 3.6,
4.5, 5.8, 8.0, and 24µm with IRAC and MIPS on the Spitzer Space
Telescope. The IRAC data consisted of two separate observations, a
large shallow map and a small deep map, on 2004 February 11 and 18
(UT), respectively. Observations of IC 348 using MIPS were taken in
2004 February.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 307 Spitzer IRAC/MIPS IC 348 catalog
table2.dat 53 307 SED derived α and AV
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See also:
J/ApJ/497/736 : The young cluster IC 348. (Herbig, 1998)
J/ApJ/525/466 : Young low-mass stars and brown dwarfs in IC348 (Luhman+ 1999)
J/ApJ/593/1093 : IC 348 membership (Luhman+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- LRL Sequential running number (G1)
7- 8 I2 h RAh Hour of Right Ascension (J2000) (1)
10- 11 I2 min RAm Minute of Right Ascension (J2000) (1)
13- 18 F6.3 s RAs Second of Right Ascension (J2000) (1)
19 A1 --- DE- Sign of the Declination (J2000) (1)
20- 21 I2 deg DEd Degree of Declination (J2000) (1)
23- 24 I2 arcmin DEm Arcminute of Declination (J2000) (1)
26- 30 F5.2 arcsec DEs Arcsecond of Declination (J2000) (1)
32- 36 F5.2 mag 3.6mag ? IRAC 3.6µm magnitude
38- 41 F4.2 mag e_3.6mag ? Error in 3.6IRACmag
43- 47 F5.2 mag 4.5mag ? IRAC 4.5µm magnitude
49- 52 F4.2 mag e_4.5mag ? Error in 4.5IRACmag
54- 58 F5.2 mag 5.8mag ? IRAC 5.8µm magnitude
60- 63 F4.2 mag e_5.8mag ? Error in 5.8IRACmag
65- 69 F5.2 mag 8.0mag ? IRAC 8.0µm magnitude
71- 74 F4.2 mag e_8.0mag ? Error in 8.0IRACmag
76 A1 --- l_24mag Limit flag on 24MIPSmag
77- 81 F5.2 mag 24mag ? MIPS 24µm magnitude
83- 86 F4.2 mag e_24mag ? Error in 24MIPSmag
88- 92 I5 --- blIRAC ? IRAC BLEND identification (2)
94- 98 I5 --- blMIPS ? MIPS BLEND identification (2)
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Note (1): As aligned to the 2MASS coordinate system.
Note (2): BLEND flags for aperture photometry. Corresponds to the ID of the
other IRAC/MIPS source in photometry beam.
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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- 5 I5 --- LRL Sequential running number (G1)
7- 11 A5 --- SpType MK spectral type (1)
13- 16 F4.1 mag AV ? Visual Extinction (2)
18- 23 F6.3 --- alpha0 ? Observed IRAC SED slope
24 A1 --- f_alpha0 alpha0 derived from 2 bands (3)
26- 30 F5.3 --- e_alpha0 ? The 1σ uncertainty in alpha0
32- 37 F6.3 --- alpha1 ? Dereddened IRAC SED slope
38 A1 --- f_alpha1 alpha1 derived from 2 bands (3)
40- 44 F5.3 --- e_alpha1 ? The 1σ uncertainty in alpha1
46 I1 --- Nbands ? Number of passbands fit for IRAC SED slope
48- 53 A6 --- STARDISK Star disk class (4)
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Note (1): Adopted spectral type from literature sources.
Note (2): Visual extinction derived from SED fitting.
Note (3): A "f" indicates stars with a slope from only 2 IRAC bands that
are assigned a slope error of -0.5.
Note (4): Type of Star/Disk spectral energy distribution, based on alpha1,
defined as follows:
ANEMIC = thin disk, with -2.56<α←1.80
FLAT = flat disk, with α>-1.80
STAR = diskless star, with α←2.56
THICK = thick disk, with α>-1.80
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Global Notes:
Note (G1): Sequential running number for IC 348 members as listed in
literature (Luhman 1999, Cat. J/ApJ/525/466; Luhman et al. 2003,
Cat. J/ApJ/593/1093 and 2005ApJ...618..810L 2005ApJ...618..810L).
Cl* IC 348 LRL NNNA in Simbad.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 08-Feb-2007