J/ApJ/676/427 MIPS and IRAC data on ChaII PMS stars (Alcala+, 2008)
The Spitzer c2d survey of large, nearby, interstellar clouds.
X. The Chamaeleon II Pre-Main-Sequence population as observed with IRAC and
MIPS.
Alcala J.M., Spezzi L., Chapman N., Evans II N.J., Huard T.L.,
Jorgensen J.K., Merin B., Stapelfeldt K.R., Covino E., Frasca A.,
Gandolfi D., Oliveira I.
<Astrophys. J., 676, 427-463 (2008)>
=2008ApJ...676..427A 2008ApJ...676..427A
ADC_Keywords: Molecular clouds ; Stars, pre-main sequence ; Photometry, infrared
Keywords: circumstellar matter - infrared: stars -
planetary systems: protoplanetary disks - stars: formation -
stars: low-mass, brown dwarfs - stars: pre-main sequence
Abstract:
We discuss the results from the combined IRAC and MIPS c2d Spitzer
Legacy survey observations and complementary optical and NIR data of
the Chamaeleon II (Cha II) dark cloud. We perform a census of the
young population in an area of ∼1.75deg2 and study the spatial
distribution and properties of the cloud members and candidate
pre-main-sequence (PMS) objects and their circumstellar matter. Our
census is complete down to the substellar regime (M∼0.03M_☉).
Description:
The observations, data reduction, source statistics, and the results
from the IRAC observations are reported in Porras et al.
(2007ApJ...656..493P 2007ApJ...656..493P).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 109 63 Pre-Main-Sequence Objects and Candidates in ChaII
table2.dat 132 63 Available Fluxes, in mJy, from 0.36 to 0.96um
table3.dat 136 63 Available Fluxes, in mJy, from 1.25 to 5.0um
table4.dat 142 63 Available Fluxes, in mJy, from 5.8 to 25um
table5.dat 131 63 Available Fluxes, in mJy, from 60 to 1300um
refs.dat 59 15 References
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See also:
J/A+A/399/995 : SOFI and ISOCAM observations of Cha II (Persi+, 2003)
J/A+A/470/281 : WFI optical photometry in Cha II dark cloud (Spezzi+, 2007)
J/ApJ/663/1149 : MIPS and IRAC Serpens YSO population (Harvey+, 2007)
J/ApJS/177/551 : Spitzer c2d survey XI. Lupus with IRAC and MIPS (Merin+, 2008)
J/ApJ/680/1295 : Physical properties of Cha II PMS (Spezzi+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [ASC2008] Sequential number
4- 9 A6 --- --- [SSTc2d]
11- 26 A16 --- SSTc2d SSTc2d name (JHHMMSS.s+DDMMSS) (1)
28- 57 A30 --- OName Other name(s)
59- 60 I2 h RAh Right ascension (J2000) (2)
62- 63 I2 min RAm Right ascension (J2000) (2)
65- 69 F5.2 s RAs Right ascension (J2000) (2)
71 A1 --- DE- Declination sign (J2000) (2)
72- 73 I2 deg DEd Declination sign (J2000) (2)
75- 76 I2 arcmin DEm Declination sign (J2000) (2)
78- 82 F5.2 arcsec DEs Declination sign (J2000) (2)
84- 90 A7 --- Sel Selection Flag (3)
91 A1 --- n_Sel [c] IRAC observation not available (4)
93- 96 A4 --- Class Lada class of PMS source (flat, I, II or III)
98-100 A3 --- Pos [In Off] IRAC/MIPS overlapping area (5)
102-109 A8 --- Ref References, in refs.dat file
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Note (1): The c2d names are as in the c2d final delivery document by Evans
et al. (2007, Final Delivery of Data from the c2d Legacy Project: IRAC
and MIPS (Pasadena: SSC)). We note that, because of reprocessing
during the source extraction for new catalog releases, some of these
names may be slightly different than those reported in Young et al.
(2005ApJ...628..283Y 2005ApJ...628..283Y) for the same sources.
Note (2): Most coordinates are from optical images, where the multiple
objects are better resolved.
Note (3): Selection flag as follows:
PMS = pre-main-sequence object
CND = candidate pre-main-sequence object
YSO = object with IRAC/MIPS 24um colors that passed the Harvey et al.
(2007, Cat. J/ApJ/663/1149) criteria
IRAS 12496-7650 is definitely a YSO, but not selected by the Harvey et
al. (2007, Cat. J/ApJ/663/1149) criteria because it is saturated in
IRAC 3.6um and IRAC 4.5um.
Note (4): 'c' means that the object would have met the c2d selection
criteria if IRAC observations had been available.
Note (5): Position flag as follows:
In = object inside the IRAC 3.6-8um/MIPS 24um overlapping area
Off = object off the IRAC 3.6-8um/MIPS 24um overlapping area
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- [ASC2008] Sequential number
4- 26 A23 -- Name Name
28- 32 F5.3 mJy FU ? U (0.36um) flux (1)
34- 38 F5.3 mJy e_FU ? rms uncertainty on FU
40 A1 --- l_FB Limit flag on FB
41- 46 F6.3 mJy FB ? B (0.44um) flux (2)
48- 52 F5.3 mJy e_FB ? rms uncertainty on FB
54- 59 F6.3 mJy FV ? V (0.55um) flux (2)
61- 65 F5.3 mJy e_FV ? rms uncertainty on FU
67- 72 F6.3 mJy FR ? R (0.64um) flux (3)
74- 78 F5.3 mJy e_FR ? rms uncertainty on FR
80- 84 F5.2 mJy FHa12 ? Hα12 (0.665um) flux (3)
86- 90 F5.2 mJy e_FHa12 ? rms uncertainty on FHa12
92- 99 F8.4 mJy FI ? I (0.79um) flux (3) (4)
100-106 F7.4 mJy e_FI ? rms uncertainty on FI
108-113 F6.2 mJy Fm914 ? m914 (0.915um) flux (3)
115-119 F5.2 mJy e_Fm914 ? rms uncertainty on Fm914
121-126 F6.2 mJy Fz ? z (0.96um) flux (3)
128-132 F5.2 mJy e_Fz ? rms uncertainty on Fz
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Note (1): U fluxes are from photometry by Hughes & Hartigan, 1992AJ....104..680H 1992AJ....104..680H
Note (2): B and V fluxes are from photometry extracted from the NOMAD
catalog (Zacharias et al. 2004AAS...205.4815Z 2004AAS...205.4815Z, Cat. I/297)
Note (3): R, Ha12, I, m914 , and z fluxes are from photometry by Spezzi et
al., 2007A&A...470..281S 2007A&A...470..281S.
Note (4): For SSTc2d J125758.7-770120 and SSTc2d J130540.8-773958 the I
fluxes are from photometry by Allers et al. (2006ApJ...644..364A 2006ApJ...644..364A).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- [ASC2008] Sequential number
4- 26 A23 -- Name Name
28 A1 -- l_FJ Limit flag on FJ
29- 36 F8.3 mJy FJ ? 2MASS J (1.25um) flux
38- 43 F6.3 mJy e_FJ ? rms uncertainty on FJ
44 A1 --- l_FH Limit flag on FH
45- 51 F7.2 mJy FH ? 2MASS H (1.65um) flux
53- 57 F5.2 mJy e_FH ? rms uncertainty on FH
59 A1 --- l_FKs Limit flag on FH
60- 66 F7.2 mJy FKs ? 2MASS Ks (2.2um) flux
68- 73 F6.2 mJy e_FKs ? rms uncertainty on FKs
75 A1 --- l_FL Limit flag on FL
76- 83 F8.2 mJy FL ? L (3.4um) flux (5)
85- 90 F6.2 mJy e_FL ? rms uncertainty on FL
92 A1 --- l_F3.6 Limit flag on F3.6um
93- 99 F7.2 mJy F3.6 ? IRAC (3.6um) flux (G1)
101-106 F6.2 mJy e_F3.6 ? rms uncertainty on F3.6um
108-114 F7.2 mJy F4.5 ? IRAC (4.5um) flux (G1)
116-120 F5.2 mJy e_F4.5 ? rms uncertainty on F4.5um
122-129 F8.2 mJy FM ? M (5.0um) flux (5)
131-136 F6.2 mJy e_FM ? rms uncertainty on FM
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Note (5): L and M fluxes are from photometry by Hughes & Hartigan
(1992AJ....104..680H 1992AJ....104..680H).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- [ASC2008] Sequential number
4- 26 A23 -- Name Name
27 A1 --- l_F5.8 Limit flag on F5.8um
28- 35 F8.2 mJy F5.8 ? IRAC 5.8um flux (G1)
37- 43 F7.2 mJy e_F5.8 ? rms uncertainty on F5.8um
45 A1 --- l_F6.7 Limit flag on F6.7um
46- 51 F6.2 mJy F6.7 ? ISO 6.7um flux (6)
53- 57 F5.2 mJy e_F6.7 ? rms uncertainty on F6.7um
59- 66 F8.2 mJy F8.0 ? IRAC 8.0um flux (G1)
68- 74 F7.2 mJy e_F8.0 ? rms uncertainty on F8.0um
76 A1 --- l_F12 Limit flag on F12um
77- 84 F8.2 mJy F12 ? IRAS 12um flux (6)
86- 92 F7.2 mJy e_F12 ? rms uncertainty on F12um
94 A1 --- l_F14.3 Limit flag on F14.3um
95-101 F7.2 mJy F14.3 ? ISO 14.3um flux (6)
103-107 F5.2 mJy e_F14.3 ? rms uncertainty on F14.3um
109 A1 --- l_F24 Limit flag on F24um
110-116 F7.2 mJy F24 ? MIPS 24um flux (G1) (7)
118-123 F6.2 mJy e_F24 ? rms uncertainty on F24um
125 A1 --- l_F25 Limit flag on F25um
126-134 F9.2 mJy F25 ? IRAS 25um flux (G2)
136-142 F7.2 mJy e_F25 ? rms uncertainty on F25um
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Note (6): ISO 6.7um and ISO 14.3um fluxes are from Persi et al. (2003,
Cat. J/A+A/399/995).
Note (7): The MIPS 24um flux for Sz 63 is taken from Young et al.
(2005ApJ...628..283Y 2005ApJ...628..283Y).
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [ASC2008] Sequential number
4- 26 A23 -- Name Name
27 A1 --- l_F60 Limit flag on F60um
28- 36 F9.2 mJy F60 ? IRAS 60um flux (G2)
38- 45 F8.2 mJy e_F60 ? rms uncertainty on F60um
47 A1 --- l_F70 Limit flag on F70um
48- 55 F8.2 mJy F70 ? MIPS 70um flux (G1)
57- 63 F7.2 mJy e_F70 ? rms uncertainty on F70um
65 A1 --- l_F100 Limit flag on F100um
66- 74 F9.2 mJy F100 ? IRAS 100um flux (G2)
76- 83 F8.2 mJy e_F100 ? rms uncertainty on F100um
86- 93 F8.2 mJy F160 ? MIPS 160um flux (8)
95-101 F7.2 mJy e_F160 ? rms uncertainty on F160um
103 A1 --- l_F1200 Limit flag on F1200um
104-110 F7.2 mJy F1200 ? 1200um flux (8)
112-117 F6.2 mJy e_F1200 ? rms uncertainty on F1200um
119 A1 --- l_F1300 Limit flag on F1300um
120-125 F6.2 mJy F1300 ? 1300um flux (9)
127-131 F5.2 mJy e_F1300 ? rms uncertainty on F1300um
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Note (8): MIPS 160 and 1200um fluxes are from Young et al. (2005ApJ...628..283Y 2005ApJ...628..283Y)
Note (9): The 1300um fluxes are from Henning et al. (1993A&A...276..129H 1993A&A...276..129H).
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference code
4- 22 A19 --- BibCode BibCode
24- 37 A14 --- Aut Author's name
39- 59 A21 --- Com Comments
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Global notes:
Note (G1): IRAC 3.6um, 4.5um, 5.8um, 8um, and MIPS 24um and 70um fluxes are
from c2d photometry (Evans et al., 2007, Final Delivery of Data from
the c2d Legacy Project: IRAC and MIPS (Pasadena: SSC)).
Note (G2): IRAS 12um and IRAS 25um fluxes are IRAS-PSC, Beichmann et al.
(1988, Cat. II/125).
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History:
From electronic version of the journal
References:
Young et al., Paper I 2005ApJ...628..283Y 2005ApJ...628..283Y
Harvey et al., Paper II 2006ApJ...644..307H 2006ApJ...644..307H
Jorgensen et al., Paper III 2006ApJ...645.1246J 2006ApJ...645.1246J
Chapman et al., Paper IV 2007ApJ...667..288C 2007ApJ...667..288C
Porras et al., Paper V 2007ApJ...656..493P 2007ApJ...656..493P
Rebull et al., Paper VI 2007ApJS..171..447R 2007ApJS..171..447R
Padgett et al., Paper VII 2008ApJ...672.1013P 2008ApJ...672.1013P
Harvey et al., Paper VIII 2007ApJ...663.1139H 2007ApJ...663.1139H
Harvey et al., Paper IX 2007ApJ...663.1149H 2007ApJ...663.1149H, Cat. J/ApJ/663/1149
Merin et al., Paper XI 2008ApJS..177..551M 2008ApJS..177..551M, Cat. J/ApJS/177/551
Young et al., Paper XII 2015AJ....150...40Y 2015AJ....150...40Y, Cat. J/AJ/150/40
(End) Patricia Vannier [CDS] 16-Aug-2009