J/A+A/573/A95 Photometry of the young open cluster Pismis 24 (Massi+, 2015)
Young open clusters in the galactic star forming region NGC 6357.
Massi F., Giannetti A., di Carlo E., Brand J., Beltran M.T., Marconi G.
<Astron. Astrophys. 573, A95 (2015)>
=2015A&A...573A..95M 2015A&A...573A..95M
ADC_Keywords: Clusters, open ; Photometry ; Stars, pre-main sequence
Keywords: stars: formation - stars: massive -
Galaxy: open clusters and associations: individual: Pismis 24 -
ISM: HII regions - ISM: individual objects: NGC 6357
Abstract:
We present the results of a study of the stellar population of the
young open cluster Pismis 24 (RA∼17:24:44, DE~-34:12). Observations
were carried out through JHKs filters with SofI at NTT (ESO).
Photometry in the IRAC (onboard satellite Spitzer) bands (3.6, 4.5,
5.8, and 8.0-micron) was performed on deep archive images. Optical
photometry in the Cousins VI bands was performed on WFC2 (onboard the
HST) archive images. High-resolution X-ray photometry with ACIS
(onboard satellite Chandra) was taken from Wang et al. (2007). Source
coordinates were obtained by matching SofI Ks sources to 2MASS K
sources. Table 1 lists the sources retrieved in the SofI field
(without VI photometry). Table 2 contains the subsample of sources
from Table 1 falling in the smaller WFC2 field (including VI
photometry).
Description:
Table 1 lists JHKs[3.6][4.5][5.8][8.0]X-ray for the sources retrieved
in the 4'x4' SofI field centred on Pismis 24. Table 2 lists
VIJHKs[3.6][4.5][5.8][8.0]X-ray for the sources retrieved in the
smaller WFC2 field centred on Pismis 24 (and inside the SofI field).
Stars contained in both tables have the same ID number. For objects
associated with X-ray emission, the 3-digit ID from the catalogue of
Wang et al. (2007, Cat. J/ApJS/168/100) is given. X-ray sources
classified as "tentative" by Wang et al. (2007, Cat. J/ApJS/168/100),
are indicated by a four digit number (1+ID from Wang et al. 2007, Cat.
J/ApJS/168/100). Sources detected only in the VI band have a 4-digit
ID starting with 9. When only detected in the IRAC/Spitzer bands,
detection in at least the 3.6 and 4.5-micron bands is required for the
source to enter the catalogue.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 121 6650 Star positions and magnitudes in the SofI field
table2.dat 145 1237 *Star positions and magnitudes in the WFC2 field
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Note on table2.dat: All sources but 13 in table1.dat.
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See also:
J/ApJS/168/100 : X-ray study of star-forming region NGC 6357 (Wang+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID [1/6756] Source identification code
7- 8 I2 h RAh Right ascension (J2000.0)
10- 11 I2 min RAm Right ascension (J2000.0)
13- 17 F5.2 s RAs Right ascension (J2000.0)
19 A1 --- DE- Declination sign (J2000.0)
20- 21 I2 deg DEd Declination (J2000.0)
23- 24 I2 arcmin DEm Declination (J2000.0)
26- 29 F4.1 arcsec DEs Declination (J2000.0)
32- 36 F5.2 mag Jmag ?=99.00 J band (G1)
38- 42 F5.2 mag e_Jmag ?=99.00 J band photometric error (G1)
44- 48 F5.2 mag Hmag ?=99.00 H band (G1)
50- 54 F5.2 mag e_Hmag ?=99.00 H band photometric error (G1)
56- 60 F5.2 mag Ksmag ?=99.00 Ks band (G1)
62- 66 F5.2 mag e_Ksmag ?=99.00 Ks band photometric error (G1)
68- 72 F5.2 mag [3.6] ?=99.00 Spitzer/IRAC 3.6um (G1)
74- 78 F5.2 mag e_[3.6] ?=99.00 Spitzer/IRAC 3.6um photometric error (G1)
80- 84 F5.2 mag [4.5] ?=99.00 Spitzer/IRAC 4.5um (G1)
86- 90 F5.2 mag e_[4.5] ?=99.00 Spitzer/IRAC 4.5um photometric error (G1)
92- 96 F5.2 mag [5.8] ?=99.00 Spitzer/IRAC 5.8um (G1)
98-102 F5.2 mag e_[5.8] ?=99.00 Spitzer/IRAC 5.8um photometric error (G1)
104-108 F5.2 mag [8.0] ?=99.00 Spitzer/IRAC 8.0um (G1)
110-114 F5.2 mag e_[8.0] ?=99.00 Spitzer/IRAC 8.0um photometric error (G1)
116-119 I4 --- Xid ?=9999 Source identification code in Wang et al.
(2007, Cat. J/ApJS/168/100) (G2)
121 A1 --- M [M] M: JHKs from 2MASS (G3)
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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- 4 I4 --- ID [1/9010] Source identification code
7- 8 I2 h RAh Right ascension (J2000.0)
10- 11 I2 min RAm Right ascension (J2000.0)
13- 17 F5.2 s RAs Right ascension (J2000.0)
19 A1 --- DE- Declination sign (J2000.0)
20- 21 I2 deg DEd Declination (J2000.0)
23- 24 I2 arcmin DEm Declination (J2000.0)
26- 29 F4.1 arcsec DEs Declination (J2000.0)
32- 36 F5.2 mag Vmag ?=99.00 Johnson-Cousins V band (1)
38- 42 F5.2 mag e_Vmag ?=99.00 V band photometric error (1)
44- 48 F5.2 mag Icmag ?=99.00 Johnson-Cousins I band (1)
50- 54 F5.2 mag e_Icmag ?=99.00 I band photometric error (1)
56- 60 F5.2 mag Jmag ?=99.00 J band (G1)
62- 66 F5.2 mag e_Jmag ?=99.00 J band photometric error (G1)
68- 72 F5.2 mag Hmag ?=99.00 H band (G1)
74- 78 F5.2 mag e_Hmag ?=99.00 H band photometric error (G1)
80- 84 F5.2 mag Ksmag ?=99.00 Ks band (G1)
86- 90 F5.2 mag e_Ksmag ?=99.00 Ks band photometric error (G1)
92- 96 F5.2 mag [3.6] ?=99.00 Spitzer/IRAC 3.6um (G1)
98-102 F5.2 mag e_[3.6] ?=99.00 Spitzer/IRAC 3.6um photometric error (G1)
104-108 F5.2 mag [4.5] ?=99.00 Spitzer/IRAC 4.5um (G1)
110-114 F5.2 mag e_[4.5] ?=99.00 Spitzer/IRAC 4.5um photometric error (G1)
116-120 F5.2 mag [5.8] ?=99.00 Spitzer/IRAC 5.8um (G1)
122-126 F5.2 mag e_[5.8] ?=99.00 Spitzer/IRAC 5.8um photometric error (G1)
128-132 F5.2 mag [8.0] ?=99.00 Spitzer/IRAC 8.0um (G1)
134-138 F5.2 mag e_[8.0] ?=99.00 Spitzer/IRAC 8.0um photometric error (G1)
140-143 I4 --- Xid ?=9999 Source identification code in Wang et al.
(2007, Cat. J/ApJS/168/100) (G1)
145 A1 --- M [M] JHKs from 2MASS (G2)
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Note (1): 99.00 means either no detection or saturation in at least one of the
VI bands .
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Global notes:
Note (G1): 99.00 means no detection in the band.
Note (G2): contents of "Xid" column:
* 3-digit number in column Xid refers to ID number given in Table 1 of
Wang et al. (2007ApJS..168..100W 2007ApJS..168..100W, Cat. J/ApJS/168/100).
* 4-digit number starting with 1 indicates a tentative detection in
Wang et al. (2007ApJS..168..100W 2007ApJS..168..100W, Cat. J/ApJS/168/100);
subtract by 1000 to obtain the corresponding ID in Wang et al. catalogue.
* 9999 means no detection in X-ray
Note (G3): When the star is saturated in the SofI images, JHKs are taken from
the 2MASS Point Source Catalog.
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Acknowledgements:
Fabrizio Massi, fmassi(at)arcetri.astro.it
(End) Patricia Vannier [CDS] 16-Oct-2014