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J/ApJ/719/9  IRAC point-source catalog of Vela-D cloud      (Strafella+, 2010)

The Spitzer-IRAC point-source catalog of the Vela-D cloud. Strafella F., Elia D., Campeggio L., Giannini T., Lorenzetti D., Marengo M., Smith H.A., Fazio G., De Luca M., Massi F. <Astrophys. J., 719, 9-27 (2010)> =2010ApJ...719....9S
ADC_Keywords: Photometry, infrared ; Molecular clouds ; YSOs Keywords: infrared: stars - ISM: clouds - ISM: individual objects - surveys - (Vela Molecular Ridge) - stars: formation - stars: pre-main sequence Abstract: This paper presents the observations of Cloud D in the Vela Molecular Ridge, obtained with the Infrared Array Camera (IRAC) camera on board the Spitzer Space Telescope at the wavelengths λ=3.6, 4.5, 5.8, and 8.0um. A photometric catalog of point sources, covering a field of approximately 1.2deg2, has been extracted and complemented with additional available observational data in the millimeter region. Previous observations of the same region, obtained with the Spitzer MIPS camera in the photometric bands at 24um and 70um, have also been reconsidered to allow an estimate of the spectral slope of the sources in a wider spectral range. A total of 170299 point sources, detected at the 5σ sensitivity level in at least one of the IRAC bands, have been reported in the catalog. There were 8796 sources for which good quality photometry was obtained in all four IRAC bands. For this sample, a preliminary characterization of the young stellar population based on the determination of spectral slope is discussed; combining this with diagnostics in the color-magnitude and color-color diagrams, the relative population of young stellar objects (YSOs) in different evolutionary classes has been estimated and a total of 637 candidate YSOs have been selected. Description: The observations were carried out with the IRAC on board the Spitzer Space Telescope. The data were obtained as part of the Spitzer/IRAC Cycle 3 GTO (PID 30335, PI: G. Fazio). The Galactic region observed was delimited in longitude by 264°29'≳l≳263°00' and in latitude by 0°42'≳b≳0°50', covering about 1.2deg2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 102 1363 VMR-D MIPS catalog table5.dat 233 170299 VMR-D IRAC point source catalog table9.dat 233 637 VMR-D IRAC YSO catalog table10.dat 113 276 VMR-D MIPS YSO catalog
See also: J/ApJ/704/606 : Protostars identification through Spitzer (Giannini+, 2009) J/ApJ/671/470 : MIPS survey of YSOs in Vela Molecular Ridge-D (Giannini+, 2007) J/A+AS/104/233 : Emission-line stars in Vela Molecular Ridge (Pettersson+ 1994) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- MIPS MIPS catalog number (<[SEC2010] MIPS NNNN> in Simbad) 6- 14 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000) 16- 24 F9.5 deg DEdeg Declination in decimal degrees (J2000) 26- 34 F9.5 deg GLON Galactic longitude 36- 43 F8.5 deg GLAT Galactic latitude 45- 54 E10.3 Jy F24 Spitzer/MIPS 24 micron band flux density 56- 64 E9.3 Jy e_F24 Uncertainty in F24 (1) 66- 74 E9.3 Jy F70 Spitzer/MIPS 70 micron band flux density 76- 84 E9.3 Jy e_F70 Uncertainty in F70 (1) 86- 89 F4.1 arcsec Dist Distance between centroids at 24 and 70 microns 91 A1 --- IRAC [IN] Source inside(I) / outside(N) IRAC observed region 93 A1 --- 12CO [CAON] Association with ^12^CO(1-0) (G1) 95 A1 --- 13CO [CAON] Association with ^13^CO(2-1) (G1) 97-102 A6 --- Dust Name of 1.2mm dust core (G2)
Note (1): When the flux reported is an upper limit, the uncertainty has been put to zero.
Byte-by-byte Description of file: table[59].dat
Bytes Format Units Label Explanations
1- 6 I6 --- IRAC IRAC catalog number (<[SEC2010] IRAC NNNNNN> in Simbad) 8- 17 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000) 19- 28 F10.6 deg DEdeg Declination in decimal degrees (J2000) 30- 39 F10.6 deg GLON Galactic longitude 41- 49 F9.6 deg GLAT Galactic latitude 51- 62 E12.5 Jy F3.6 ? Spitzer/IRAC 3.6 micron band flux density 64- 74 E11.5 Jy e_F3.6 ?=0 Uncertainty in F3.6 76- 77 A2 --- q_F3.6 Quality flag on F3.6 (1) 79- 90 E12.5 Jy F4.5 ? Spitzer/IRAC 4.5 micron band flux density 92-102 E11.5 Jy e_F4.5 ?=0 Uncertainty in F4.5 104-105 A2 --- q_F4.5 Quality flag on F4.5 (1) 107-118 E12.5 Jy F5.8 ? Spitzer/IRAC 5.8 micron band flux density 120-130 E11.5 Jy e_F5.8 ?=0 Uncertainty in F5.8 132-133 A2 --- q_F5.8 Quality flag on F5.8 (1) 135-146 E12.5 Jy F8.0 ? Spitzer/IRAC 8.0 micron band flux density 148-158 E11.5 Jy e_F8.0 ?=0 Uncertainty in F8.0 160-161 A2 --- q_F8.0 Quality flag on F8.0 (1) 163-166 I4 --- MIPS ?=- Associated MIPS catalog number (<[SEC2010] MIPS NNNN> in Simbad) (2) 168-171 F4.1 arcsec Dist Distance of associated MIPS source centroid 173-182 E10.3 Jy F24 ? Spitzer/MIPS 24 micron band flux density (3) 184-192 E9.3 Jy e_F24 Uncertainty in F24 194 A1 --- q_F24 [Gbu] Quality flag on F24 (4) 196-204 E9.3 Jy F70 ? Spitzer/MIPS 70 micron band flux density 206-214 E9.3 Jy e_F70 Uncertainty in F70 216 A1 --- q_F70 [Gbu] Quality flag on F70 (4) 218-222 F5.2 --- alpha ? Spectral slope; 2um<λ<20um (for table 9 only) 224 A1 --- 12CO [CAON] Association with ^12^CO(1-0) (G1) 226 A1 --- 13CO [CAON] Association with ^13^CO(2-1) (G1) 228-233 A6 --- Dust Name of 1.2mm dust core (G2)
Note (1): Photometry quality code as follows: H1 = (High): "good photometry", refer to a more than 10σ detection; "1" indicates that the source lies in the sky area covered only in one observing epoch H2 = (High): "good photometry", refer to a more than 10σ detection; "2" indicates that the source lies in the sky area covered in both observing epochs L1 = (Low): source is revealed between 5 and 10σ and lies in the sky area covered only in one observing epoch L2 = (Low): source is revealed between 5 and 10σ and lies in the sky area covered in both observing epochs b = "bad photometry" u = upper limit Note (2): This is reported if its centroid is within a distance of 6" from the IRAC source. MIPS sources detected only at 70 micron are reported when the centroid is within 20". Notice that, due to the different beam sizes, the association of more than one IRAC source with the same MIPS source is allowed. Note (3): A blank value denotes a position falling outside the MIPS mosaic. Note (4): The quality flag is similar to that used for IRAC flux densities but with good photometry simply flagged "G".
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
1- 4 I4 --- MIPS MIPS catalog number (<[SEC2010] MIPS NNNN> in Simbad) 6- 14 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000) 16- 24 F9.5 deg DEdeg Declination in decimal degrees (J2000) 26- 34 F9.5 deg GLON Galactic longitude 36- 43 F8.5 deg GLAT Galactic latitude 45- 54 E10.3 Jy F24 Spitzer/MIPS 24 micron band flux density 56- 64 E9.3 Jy e_F24 Uncertainty in F24 (zero for upper limit) (1) 66- 74 E9.3 Jy F70 Spitzer/MIPS 70 micron band flux density 76- 84 E9.3 Jy e_F70 Uncertainty in F70 (zero for upper limit) (1) 86- 89 F4.1 arcsec Dist Distance between centroids at 24 and 70 microns 91- 95 F5.2 --- alpha Spectral slope; 2um<λ<20um 97-102 I6 --- IRAC ?=- IRAC catalog number (<[SEC2010] IRAC NNNN> in Simbad) 104 A1 --- 12CO [CAON] Association with ^12^CO(1-0) (G1) 106 A1 --- 13CO [CAON] Association with ^13^CO(2-1) (G1) 108-113 A6 --- Dust Name of 1.2mm dust core (G2)
Note (1): When the flux reported is an upper limit, the uncertainty has been put to zero.
Global notes: Note (G1): Association flag, as mapped in Elia et al. 2007ApJ...655..316E, as follows: C = source lies on map pixel assigned to one or more gas clumps. A = source is not associated to a clump, but lies inside the integrated intensity contour corresponding to the 5K.km/s, adopted here as a criterion for spatial association with the gas. O = source lying inside the area observed in the given line, but not associated with the gas according to the two previous criteria. N = source is outside the sky area covered by observations in the given line. Note (G2): Taken from the lists of Massi et al. (2007A&A...466.1013M) and reported here when the IRAC source falls within the quoted core radius.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Nov-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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