J/MNRAS/414/1526 Near-IR photometry of Sh 2-235 (Dewangan+, 2011)
Infrared photometric study of the massive star-forming region S235 using
Spitzer-Infrared Array Camera and JHK observations.
Dewangan L.K., Anandarao B.G.
<Mon. Not. R. Astron. Soc., 414, 1526-1544 (2011)>
=2011MNRAS.414.1526D 2011MNRAS.414.1526D
ADC_Keywords: H II regions ; Stars, pre-main sequence ; Photometry, infrared
Keywords: stars: formation - stars: pre-main-sequence - stars: winds, outflows -
H II regions - ISM: individual objects: S235 - infrared: ISM
Abstract:
We present the Spitzer-Infrared Array Camera (IRAC) images of the S235
star-forming complex that includes the east 1, east 2, central, S235A
and S235B regions. In addition, we present the near-infrared images of
the S235A and S235B regions. The IRAC photometry reveals on-going star
formation, with 86 Class 0/I and 144 Class II young stellar objects
(YSOs) in the entire S235 complex.
Description:
Spitzer-IRAC archival data around the source S235 (encompassing IRAS
05375+3540) were obtained from the Spitzer Science Center (SSC) on
2009 May 6. The observations for S235 were taken by Spitzer in the
high dynamic range (HDR) mode with 12 s integration time in all four
filters on 2004 March 12 as a part of the GTO program (Id: 201;
project title: 'The Role of Photodissociation Regions in High Mass
Star Formation'; PI: G. Fazio).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablec1.dat 120 86 Spitzer-IRAC photometry of the Class 0/I YSOs
identified in S235 complex
tablec2.dat 120 144 Spitzer-IRAC photometry of the Class II YSOs
identified in S235 complex
tablec3.dat 123 7 *Selected sources in S235 east 1 and east 2 regions
tablec4.dat 100 7 Weighted mean values of the physical parameters
derived from SED modelling of the sources from
Table C3 in S235 east 1 and east 2 regions
tablec5.dat 98 11 *Spitzer-IRAC photometry of the new Class I YSOs
identified in the vicinity of S235A-B
tablec6.dat 98 50 *Spitzer-IRAC photometry of the new Class II YSOs
identified in the vicinity of S235A-B
tablec7.dat 127 10 Some of the selected sources in the S235A-B
tablec8.dat 100 7 Weighted mean values of the physical parameters
derived from SED modelling of the sources
from Table C7 in the S235A-B
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Note on tablec3.dat: All sources are Class 0/I and do not have JHK counterparts.
Note on tablec5.dat and tablec6.dat: using HKs+Ch1-2 criteria
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Byte-by-byte Description of file: tablec[1256].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number within the table
5- 9 A5 --- n_Seq Other name
11 I1 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 32 F4.1 arcsec DEs Declination (J2000)
34- 38 F5.2 mag Jmag ?=- 2MASS J magnitude
40- 43 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag
44 A1 -- n_Jmag [i] i if magnitude from Mt. Abu observations
(MKO system)
45- 49 F5.2 mag Hmag ?=- 2MASS H magnitude
51- 54 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag
55 A1 -- n_Hmag [i] i if magnitude from Mt. Abu observations
(MKO system)
56- 60 F5.2 mag Ksmag ?=- 2MASS Ks magnitude
62- 65 F4.2 mag e_Ksmag ?=- rms uncertainty on Ksmag
66 A1 -- n_Ksmag [i] i if magnitude from Mt. Abu observations
(MKO system)
67- 71 F5.2 mag [3.6] IRAC 3.6um magnitude
73- 76 F4.2 mag e_[3.6] rms uncertainty on [3.6]
78- 82 F5.2 mag [4.5] IRAC 4.5um magnitude
84- 87 F4.2 mag e_[4.5] rms uncertainty on [4.5]
89- 93 F5.2 mag [5.8] ?=- IRAC 5.8um magnitude
95- 98 F4.2 mag e_[5.8] ?=- rms uncertainty on [5.8]
100-104 F5.2 mag [8.0] ? IRAC 8.0um magnitude
106-109 F4.2 mag e_[8.0] ? rms uncertainty on [8.0]
111-115 F5.2 --- SI ? IRAC spectral index
117-120 F4.2 --- e_SI ? rms uncertainty on SI
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Byte-by-byte Description of file: tablec[37].dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Name (eNsN, sN or S235B)
7- 12 A6 --- Seq Sequential number of tablec1 (tablec3) or
tablec4 (tablec7) or other name
14 I1 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 23 F5.2 s RAs Right ascension (J2000)
25 A1 --- DE- Declination sign (J2000)
26- 27 I2 deg DEd Declination (J2000)
29- 30 I2 arcmin DEm Declination (J2000)
32- 35 F4.1 arcsec DEs Declination (J2000)
37- 41 F5.2 mag Jmag ?=- 2MASS J magnitude
43- 46 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag
48- 52 F5.2 mag Hmag ?=- 2MASS H magnitude
54- 57 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag
59- 63 F5.2 mag Ksmag ?=- 2MASS Ks magnitude
65- 68 F4.2 mag e_Ksmag ?=- rms uncertainty on Ksmag
70- 74 F5.2 mag [3.6] ?=- IRAC 3.6um magnitude
76- 79 F4.2 mag e_[3.6] ?=- rms uncertainty on [3.6]
81- 85 F5.2 mag [4.5] ?=- IRAC 4.5um magnitude
87- 90 F4.2 mag e_[4.5] ?=- rms uncertainty on [4.5]
92- 96 F5.2 mag [5.8] ?=- IRAC 5.8um magnitude
98-101 F4.2 mag e_[5.8] ?=- rms uncertainty on [5.8]
103-107 F5.2 mag [8.0] ?=- IRAC 8.0um magnitude
109-112 F4.2 mag e_[8.0] ?=- rms uncertainty on [8.0]
114-118 F5.2 --- SI ?=- IRAC spectral index
120-123 F4.2 --- e_SI ?=- rms uncertainty on SI
125-127 A3 --- Cl [0I/ ] YSO class
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Byte-by-byte Description of file: tablec[48].dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Name (eNsN, or sN or S235B)
7- 10 F4.2 --- chi2 χ2 value given as per data point
12- 15 F4.2 [yr] logAge Age
17- 20 F4.2 [yr] e_logAge rms uncertainty on logAge
22- 26 F5.2 Msun M* Stellar mass
28- 31 F4.2 Msun e_M* rms uncertainty on M*
33- 36 F4.2 [K] logT* Stellar temperature
38- 41 F4.2 [K] e_logT* rms uncertainty on logT*
43- 46 F4.2 [Lsun] logL* Stellar luminosity
48- 51 F4.2 [Lsun] e_logL* rms uncertainty on logL*
53- 57 F5.2 [Msun] logMe Enveloppe mass
59- 62 F4.2 [Msun] e_logMe rms uncertainty on logMe
64- 68 F5.2 [Msun/yr] logdMe/dt Enveloppe mass loss rate
70- 73 F4.2 [Msun/yr] e_logdMe/dt rms uncertainty on logdMe/dt
75- 79 F5.2 [Msun] logMd Disc mass
81- 84 F4.2 [Msun] e_logMd rms uncertainty on logMd
86- 90 F5.2 [Msun/yr] logdMd/dt Disc mass loss rate
92- 95 F4.2 [Msun/yr] e_logdMd/dt rms uncertainty on logdMd/dt
97-100 I4 --- Nmod Number of models (degeneracy)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Apr-2012