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J/AZh/85/794      UBVRHα photometry on 5 galaxies          (Gusev+, 2008)

Age and interstellar absorption in young star-formation regions in the galaxies NGC 1068, NGC 4449, NGC 4490, NGC 4631, and NGC 4656/57 derived from multicolor photometry. Gusev A.S., Myakutin V.I., Piskunov A.E., Sakhibov F.K., Khramtsova M.S. <Astron. Zh. 85, 794 (2008)> =2008AZh....85..794G =2008ARep...52..714G
ADC_Keywords: H II regions ; Photometry, UBVRI ; Photometry, H-alpha Abstract: We have compared the results of multicolor UBVR and Hα photometry for 169 young star-formation complexes in five galaxies using a grid of evolutionary models for young star clusters. The ages and interstellar absorptions are estimated for 102 star-formation complexes with the standard uncertainties σt=0.30dex and σAV=0.45mag. The accuracies of these parameters were verified using numerical simulations. Description: Our multicolor photometry of young star-formation regions (giant HII regions) was carried out in eight spectral bands centered on emission lines, as well as in spectral intervals without emission lines (the stellar continuum). The measurements were carried out by M.A. Smirnov from frames obtained in 1966-1981 by I.I. Pronik and her colleagues at the Crimean Astrophysical Observatory (Ukraine) using the 2.6-m Shain Telescope with an electro-optical transducer (EOT). Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 02 42 40.8 -00 00 48 NGC 1068 = M 77 12 28 11.0 +44 05 33 NGC 4449 = UGC 7592 12 30 36.7 +41 38 27 NGC 4490 = UGC 7651 12 42 07.8 +32 32 27 NGC 4631 = UGC 7865 12 43 58.2 +32 10 09 NGC 4656 = UGC 7907 12 44 11.3 +32 12 19 NGC 4657 = IRAS F12416+3228 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 64 170 Photometry of star formation complexes (SFCs) in galaxies
See also: J/ApJ/591/138 : Chandra X-ray sources of NGC 1068 (Smith+, 2003) J/AJ/124/3157 : Velocities in NGC 4449 (Valdez-Gutierrez+, 2002) J/A+A/305/74 : NGC 4565, 4656 + 5907 ROSAT observations (Vogler+ 1996) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Galaxy Galaxy name 9- 11 A3 --- m_Galaxy [/57 ] For Galaxy = NGC 4556/57 13- 14 I2 --- HII Giant HII region number within the cluster 16- 20 F5.2 mag U-B ?=- U-B colour index 22- 26 F5.2 mag B-V ?=- B-V colour index 28- 32 F5.2 mag V-R ?=- V-R colour index 34- 38 F5.2 mag LCI ?=- Lyman continuum index (1) 40- 44 F5.2 mag Bmag B magnitude 46- 49 F4.1 arcsec D Size of the image of the object in the Hα+[NII] filter 51- 54 F4.2 mag AV ? Interstellar absorption in V band 56- 59 F4.2 [yr] logt ? Age estimate 61- 64 F4.2 mag Delta ? Error in the colours corrected for the interstellar absorption (2)
Note (1): LCI=2-log(F(Ha+[NII])/F(B)), where F(Ha+[NII] is the flux in close hydrogen and nitrogen emission lines and F(B) the flux in the stellar continuum in the B Band. Note (2): Error is deviations of color indices corrected for interstellar absorption from theoretical color indices for the nearest node of evolutionary model grid.

(End) Veta Avedisova [INASAN], Patricia Vannier [CDS] 13-Oct-2008
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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