J/ApJ/674/336 Spitzer observations of NGC 1333 (Gutermuth+, 2008)
Spitzer observations of NGC 1333: a study of structure and evolution in a
nearby embedded cluster.
Gutermuth R.A., Myers P.C., Megeath S.T., Allen L.E., Pipher J.L.,
Muzerolle J., Porras A., Winston E., Fazio G.
<Astrophys. J., 674, 336-356 (2008)>
=2008ApJ...674..336G 2008ApJ...674..336G
ADC_Keywords: Nebulae ; Photometry, infrared ; Photometry, millimetric/submm
Keywords: stars: formation
Abstract:
We present a comprehensive analysis of structure in the young,
embedded cluster, NGC 1333 using members identified with Spitzer and
2MASS photometry based on their IR-excess emission. A total of 137
members are identified in this way, composed of 39 protostars and 98
more evolved pre-main-sequence stars with disks. Of the latter class,
four are transition/debris disk candidates.
Description:
Observations of the NGC 1333 region were obtained with the IRAC
instrument on board Spitzer over two epochs: 2004 February 10 (PID 6)
and 2004 September 8 (PID 178).
MIPS imaging of NGC 1333 was obtained on 2004 February 3 (PID 58) at
the medium scan rate.
All sources detected by Spitzer are matched to Two-Micron All Sky
Survey (2MASS) Point Source Catalog (PSC) sources, extending the
potential wavelength coverage for these objects to J band at 1.2um.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 114 137 Spitzer-identified YSOs: 2MASS, IRAC, and
MIPS photometry
table3.dat 86 137 Spitzer-identified YSOs: addendum
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See also:
J/A+AS/106/165 : Near-IR imaging photometry of NGC 1333 (Aspin+ 1994)
J/AJ/111/1964 : JHK photometry of NGC1333 (Lada+, 1996)
J/ApJ/575/354 : Young stellar objects in the NGC 1333 (Getman+, 2002)
J/A+A/401/543 : XMM-Newton observations of NGC 1333 (Preibisch, 2003)
J/AJ/127/1131 : NGC 1333 low-mass stars infrared photometry (Wilking+, 2004)
J/ApJ/655/958 : 90-GHz observations in NGC 1333 (Walsh+, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Running identification number
([GMM2008] in Simbad)
5- 6 I2 h RAh Hour of Right Ascension (J2000)
8- 9 I2 min RAm Minute of Right Ascension (J2000)
11- 15 F5.2 s RAs Second of Right Ascension (J2000)
17 A1 --- DE- Sign of the Declination (J2000)
18- 19 I2 deg DEd Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 33 F5.2 mag Jmag ? 2MASS J band magnitude
35- 38 F4.2 mag e_Jmag ? Uncertainty in Jmag
40- 44 F5.2 mag Hmag ? 2MASS H band magnitude
46- 49 F4.2 mag e_Hmag ? Uncertainty in Hmag
51- 55 F5.2 mag Ksmag ? 2MASS Ks band magnitude
57- 60 F4.2 mag e_Ksmag ? Uncertainty in Ksmag
62- 66 F5.2 mag 3.6mag ? IRAC 3.6 micron band magnitude
68- 71 F4.2 mag e_3.6mag ? Uncertainty in 3.6mag
73- 77 F5.2 mag 4.5mag IRAC 4.5 micron band magnitude
79- 82 F4.2 mag e_4.5mag Uncertainty in 4.5mag
84- 88 F5.2 mag 5.8mag ? IRAC 5.8 micron band magnitude
90- 93 F4.2 mag e_5.8mag ? Uncertainty in 5.8mag
95- 99 F5.2 mag 8.0mag ? IRAC 8 micron band magnitude
101-104 F4.2 mag e_8.0mag ? Uncertainty in 8.0mag
106-109 F4.2 mag 24mag ? MIPS 24 micron band magnitude
111-114 F4.2 mag e_24mag ? Uncertainty in 24mag
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq Running identification number
([GMM2008] in Simbad)
5- 6 I2 h RAh Hour of Right Ascension (J2000)
8- 9 I2 min RAm Minute of Right Ascension (J2000)
11- 15 F5.2 s RAs Second of Right Ascension (J2000)
17 A1 --- DE- Sign of the Declination (J2000)
18- 19 I2 deg DEd Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 68 A40 --- Match Literature matched counterparts (4)
70- 75 A6 --- Class YSO classification (1)
77- 80 F4.2 mag AK ? The K band extinction (2)
82- 86 F5.2 --- Fit ? Fit of IRAC photometry (3)
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Note (1): Asterisks mark "deeply embedded" sources with questionable IRAC
colors or incomplete IRAC photometry and relatively bright MIPS 24um
photometry.
Note (2): Only provided for sources with valid JHKs photometry.
Note (3): Defined as the slope of the linear least squares fit to the
3.6-8.0um SEDs in logλFλ vs logλ space.
Extinction is not accounted for in these values; high extinction
can bias Fit to higher values.
Note (4): Designations are from:
ASR = Aspin, Sandell and Russell 1994, Cat. J/A+AS/106/165
LAL = Lada, Alves, and Lada 1996, Cat. J/AJ/111/1964 ([LAL96] in Simbad)
SVS = Strom, Vrba and Strom 1976AJ.....81..314S 1976AJ.....81..314S ([SVS76] NGC 1333 in Simbad)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 09-Apr-2010