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J/PAZh/27/83   Nuclear activity of NGC 4151 in 1989-2000   (Doroshenko+, 2001)

Nuclear activity of NGC 4151 as inferred from UBVRI observations in 1989-2000. Doroshenko V.T., Lyuty V.M., Bochkarev N.G., Vlasyuk V.V., Mikhailov V.P., Spiridonova O.I., Grankin K.N., Ezhkova O.V., Mel'nikov S.Y. <Pis'ma Astron. Zh. 27, 83 (2001)> =2001PAZh...27...83D =2001AstL...27...65D
ADC_Keywords: Galaxies, Seyfert; Photometry, UBVRI Abstract: Broadband UBVRI observations of the nucleus of the Seyfert galaxy NGC 4151 from 1989 until 2000 at three astronomical observatories: the Crimean Station of the Sternberg astronomical institute, The Special Astronomical observatory in the Caucasus and the Maidanac observatory of the Ulugbek Astronomical institute in Uzbekistan. All data have been reduced to a single system and are given for an A=27.5" aperture. Object: -------------------------------------- RA (2000) DE Designation -------------------------------------- 12 10 32.4 +39 24 30 NGC 4151 -------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 56 446 UBVRI observations of NGC 4151 nucleus
Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 11 F11.3 d JD [2447591/2451618] Julian date 14- 18 F5.2 mag Umag ? U magnitude 21- 25 F5.2 mag Bmag ? B magnitude 28- 32 F5.2 mag Vmag ? V magnitude 35- 39 F5.2 mag Rmag ? R magnitude 42- 46 F5.2 mag Imag ? I magnitude 49- 56 A8 --- Note Origin of the data (1)
Note (1): Origin of the data: SAIp: Crimean photoelectric data, UBVRI system close to Johnson's standard photometric system. SAIc: Crimean CCD data, UBVRI system close to Johnson's standard photometric system. Mdn : Maidanac photoelectric data, standard UBVR filters in Johnson's system. SAOc: SAO CCD data, BVRI filters. The instrumental photometric system differs only slightly from Johnson-Cousins' international system used in CCD photometry. Mdn-SAIp: average values from Maidanak and Sternberg observations Mdn-SAO: average values from Maidanak and SAO observations; SAIc-SAO: average values from Crimea and SAO observations; SAO-SAIp: average values from SAO and Crimea observations; Mdn-SAIa: average values from Maidanak and Crimea observations

(End) Veta Avedisova [INASAN] 22-May-2001, rev. 01-Aug-2001
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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