J/BaltA/18/33 Photometry of stars around NGC 7023 (Zdanavicius+, 2009)
Photometry and classification of stars around the reflection nebula NGC7023 in
Cepheus. II. Interstellar extinction and cloud distances.
Zdanavicius K., Zdanavicius J., Straizys V., Maskoliunas M.
<Baltic Astron., 18, 33-52 (2009)>
=2009BaltA..18...33Z 2009BaltA..18...33Z
ADC_Keywords: Molecular clouds ; Magnitudes ; Spectral types
Keywords: stars: fundamental parameters, classification -
Galaxy: Cepheus Flare, NGC 7023 -
ISM: extinction, clouds: individual (TGU629)
Abstract:
Interstellar extinction is investigated in a 1.5 square degree area in
the direction of the reflection nebula NGC7023 at l=104.1°,
b=+14.2°. The study is based on photometric classification and
the determination of interstellar extinctions and distances of 480
stars down to V=16.5mag from photometry in the Vilnius seven-color
system published in Paper I (2008BaltA..17..161Z 2008BaltA..17..161Z). The investigated
area is divided into five smaller subareas with slightly different
dependence of the extinction on distance. The distribution of reddened
stars is in accordance with the presence of two dust clouds at 282pc
and 715pc, however in some directions the dust distribution can be
continuous or more clouds can be present.
Objects:
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RA (2000) DE Designation(s)
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21 01 36.9 +68 09 48 NGC 7023 = C 2059+679
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 44 480 Stars in the investigated area with most reliable
spectral-types determined from Vilnius photometry
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [ZZS2008] Sequential number
6- 10 F5.2 mag Vmag Vilnius V magnitude
12- 19 A8 --- SpType MK spectral type
22- 24 F3.1 --- e_SpType Accuracy estimates of spectral types
26- 30 F5.2 mag VMAG Absolute V magnitude
32- 35 F4.2 mag AV Absorption in V band
37- 40 I4 pc Dist Heliocentric distance
42- 44 A3 --- SubArea SubArea number I to V (central part),
used in Fig.2
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History:
From electronic version of the journal
References:
Zdanavicius et al., Paper I 2008BaltA..17..161Z 2008BaltA..17..161Z
(End) Patricia Vannier [CDS] 15-Aug-2009