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J/A+AS/121/223 Multiphotometry of NGC 6611 (de Winter+ 1997)
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Pre-main sequence candidates in the very young open cluster NGC 6611
de Winter D., Koulis C., The P.S., van den Ancker M.E.,
Perez M.R., Bibo E.A.
<Astron. Astrophys. Suppl. Ser. 121, 223 (1997)>
=1997A&AS..121..223D (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, pre-main sequence ; Clusters, open ;
Photometry, UBVRIJKLMNH ; Photometry, VBLUW
Keywords: circumstellar matter - stars: emission-line - stars: evolution -
stars: formation - stars: pre-main sequence -
open clusters and associations: NGC 6611
Description:
For the search of Herbig Ae/Be objects in the extremely young open
cluster NGC 6611 we have selected a sample of 52 pre-main sequence
candidates, discovered by Walker (1961ApJ...133..438W), Sagar & Joshi
(1979Ap&SS..66....3S), Chini & Wargau (1990A&A...227..213C) and
The et al. (1990A&AS...82..319T). We continue the approach of the last
paper by studying each star individually with new and unpublished
Walraven WULBV, Johnson/Cousins UBV(RI)_C_ and Johnson JHKLM
photometric data as well as low resolution spectroscopy.
For a description of the Walraven, UBVRI, IJHKLMN and RI Cousins
photometric systems, see e.g. <GCPD/11>, <GCPD/08>, <GCPD/09>
and <GCPD/54>
Objects:
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RA (2000) DE Designation(s)
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18 18.8 -13 47 NGC 6611
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 41 103 *Walraven photometric data of stars in NGC 6611
table2 43 176 New and published UBV(RI)_J,C Johnson/Cousins
photometric data of stars in NGC 6611
table3 37 100 New and published JHKLM photometry of stars in
NGC 6611
table4 111 56 Spectral types derived for the programme stars
in NGC 6611 from photometric and spectroscopic
determinations and taken from literature.
table6 112 53 Averaged magnitudes, corrected for systematic
differences (see Table 5), of selected
photometric data used for fitting the SED.
tables.tex 99 785 LaTeX version of the tables
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Note on table1: No data is available for the following objects:
W188, W232, W240, W245, W262, W273, W276, W290, W297, W300, W313, W336,
W339, W349, W388, W396, W400, W406, W440, W484, W504, W520 and W606
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Name given by Walker number (1961ApJ...133..438W)
6- 11 F6.3 mag Vmag Visual intensity V
13- 17 F5.3 mag V-B Walraven colour V-B
19- 23 F5.3 mag B-L ? Walraven colour B-L
25- 29 F5.3 mag B-U ? Walraven colour B-U
31- 35 F5.3 mag B-W ? Walraven colour B-W
37- 41 F5.2 mag VJ Visual magnitude V_J
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Name given by Walker number (1961ApJ...133..438W)
7- 11 F5.2 mag Vmag Visual magnitude V
12- 13 A2 --- u_Vmag [: ] Uncertainty flag on Vmag (1)
15- 19 F5.2 mag U-B ? Johnson colour U-B
20- 21 A2 --- u_U-B [: ] Uncertainty flag on U-B (1)
23- 26 F4.2 mag B-V ? Johnson colour B-V
27- 28 A2 --- u_B-V [: ] Uncertainty flag on B-V (1)
30- 33 F4.2 mag V-R ? V-R colour index
34 A1 --- n_V-R [CJ] C: Cousins colour; J: Johnson colour
36- 39 F4.2 mag V-I ? V-I colour index
40 A1 --- n_V-I [CJ] C: Cousins colour; J: Johnson colour
42- 43 A2 --- Ref References (2)
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Note (1): ":" Inaccurate data ; "::" very uncertain data
Note (2): 1a: The et al. (1990A&AS...82..319T)
1b: unpublished data of July 1985 and August 1986
1c: unpublished data of June 1983
2: Walker (1961ApJ...133..438W)
3: Sagar & Joshi (1979Ap&SS..66....3S)
4: Chini & Wargau (1990A&A...227..213C)
5: Hillenbrand et al. (1993) Cat. <J/AJ/106/1906>
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Name given by Walker number (1961ApJ...133..438W)
7- 11 F5.2 mag Jmag J magnitude
13- 17 F5.2 mag Hmag H magnitude
19- 23 F5.2 mag Kmag K magnitude
25- 29 F5.2 mag Lmag ? L magnitude
31- 34 F4.2 mag Mmag ? M magnitude
36- 37 A2 --- Ref References (1)
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Note (1): 1a: The et al. (1990A&AS...82..319T)
1b: new data July 1986
2: Chini & Wargau (1990A&A...227..213C)
3: Hillenbrand et al. (1993) Cat. <J/AJ/106/1906>
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Name given by Walker number (1961ApJ...133..438W)
6 A1 --- n_Name See note (1)
8- 42 A35 --- SpUBV Spectral type derived from averaged
Johnson UBV photometry (2)
44- 50 A7 --- SpULBV Spectral type derived from averaged
Walraven ULBV photometry
52- 57 A6 --- SpHill Spectral type given by Hillenbrand et al. (1993)
Cat. <J/AJ/106/1906>
59- 65 A7 --- SpIDS Spectral type derived from IDS spectrum
67- 73 A7 --- SpCCD Spectral type derived from CCD spectrum
75-103 A29 --- Emis Spectral characteristics by emission lines
105-111 A7 --- SpType Estimated final spectral type
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Note (1): A CCD frame containing two stellar spectra are distinguished by the
possibilities (a) and (b) in the first column. In case different
photometric final solutions are obtained they are indicated
by (1) and (2).
Note (2): Spectral ranges for each object are indicated by the symbol -, and
the different possibilities separated by /.
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 4 A4 --- Name Name given by Walker number (1961ApJ...133..438W)
6 A1 --- n_Name See note (1)
8- 13 F6.3 mag Wmag ? Walraven W data (in log_10 intensity value)
15- 19 F5.2 mag UJmag ? Johnson U data
21- 26 F6.3 mag UWmag ? Walraven U data (in log_10 intensity value)
28- 33 F6.3 mag LWmag ? Walraven L data (in log_10 intensity value)
35- 40 F6.3 mag BWmag ? Walraven B data (in log_10 intensity value)
42- 46 F5.2 mag BJmag ? Johnson B data
48- 53 F6.3 mag VWmag ? Walraven V data (in log_10 intensity value)
55- 59 F5.2 mag VJCmag ? Johnson/Cousins V data
61- 65 F5.2 mag RCmag ? Cousins R data
67- 71 F5.2 mag RJmag ? Johnson R data
73- 77 F5.2 mag ICmag ? Cousins I data
79- 83 F5.2 mag IJmag ? Johnson I data
85- 89 F5.2 mag Jmag ? Johnson J data
91- 95 F5.2 mag Hmag ? Johnson H data
97-101 F5.2 mag Kmag ? Johnson K data
103-107 F5.2 mag Lmag ? Johnson L data
109-112 F4.2 mag Mmag ? Johnson M data
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Note (1): Some special options are discussed in the text
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Table5: Systematic differences of stellar UBV and JHK(L) data in NGC 6611 for
the observations taken in our programme minus those of other authors.
n indicates the number of available datasets.
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References V B-V U-B n
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Walker (1961) pg -0.02+/-0.12 -0.07+/-0.14 0.06+/-0.14 --
Sagar&Joshi (1979) -0.02+/-0.13 -0.01+/-0.07 -0.03+/-0.07 40
Chini&Wargau (1990) 0.02+/-0.05 0.02+/-0.03 -0.03+/-0.09 9
Hillenbrand et al.(1993) -0.02+/-0.04 0.02+/-0.01 -0.014+/-0.01 80
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References J H K L n
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Chini&Wargau (1990) 0.00+/-0.07 -0.19+/-0.10 -0.07+/-0.12 -0.09+/-0.01 10
Hillenbrand et al.(1993) 0.04+/-0.07 0.03+/-0.07 -0.04+/-0.13 -- -- 23
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Acknowledgements: Dolf de Winter <DOLF@astro1.ft.uam.es>
References:
Chini, R. and Wargau W.F., 1990A&A...227..213C
Hillenbrand, L.A. et al., 1993AJ....106.1906H = Cat. <J/AJ/106/1906>
Sagar R. and Joshi U.C., 1979Ap&SS..66....3S
Walker M.F., 1961ApJ...133..438W
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(End) Patricia Bauer [CDS] 03-Jun-1996