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41. http://sn.sai.msu.ru/~sil/preprints/s0_3.ps.gz
YOUNG STELLAR NUCLEI IN LENTICULAR GALAXIES: NGC 5574 AND NGC 7457 1 O. K. Sil'chenko 2 Sternberg Astronomical Institute, Universitetsky Pr. ... The compact nuclei of the galaxies appear to be chemically distinct: in NGC 5574 the nucleus is distinguished by a higher than solar ironґtoґmagnesium ratio, and in NGC 7457 a drop of mean stellar metґ allicity by a factor of 2 exists between the nucleus and the bulge. ... The bulges in NGC 5574 and NGC 7457 have rather young stellar populations. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/s0_3.ps.gz -- 339.4 Кб -- 26.09.2002
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42. http://sn.sai.msu.ru/~sil/preprints/counter.pdf
... Printed in U.S.A. COMPLEX FORMATION HISTORY OF THE LENTICULAR GALAXIES WITH STELLAR COUNTERROTATION: NGC 4138 AND NGC 45501 V. L. Afanasiev Special Astrophysical Observatory, Nizhnij Arkhyz, 369167 Russia; vafan@sao.ru and O. K. Sil`chenko 2 Sternberg ... To further explore this idea, we undertook a special study of stellar population properties in the centers of two early-type disk galaxies with counterrotating global stellar disks: NGC 4138 and NGC 4550. ... NGC 4138 3.1. ... NGC 4550 4.1....
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Ссылки http://sn.sai.msu.ru/~sil/preprints/counter.pdf -- 622.9 Кб -- 19.07.2002
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43. http://sn.sai.msu.ru/~sil/preprints/n5055.ps.gz
... Kinematics and stellar population properties in the center of nearby Sbc galaxy NGC 5055 are studied with the MultiґPupil Spectrograph of the 6 m telescope of the Special Astrophysical Observatory of Russian Academy of Sciences (SAO RAS). ... We have found a resolved chemically distinct core in NGC 5055, with the magnesiumґenhanced region shifted by 2. ## 5 (100 pc) to the southґwest from a photometric center, toward a kinematically identified circumnuclear stellar disk. ... 22 ? 6 Ionized gas 1. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/n5055.ps.gz -- 187.0 Кб -- 03.06.2002
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44. http://sn.sai.msu.ru/~sil/preprints/n4548.pdf.gz
... A Chemically Decoupled Nucleus and Inner Polar Ring of the SBb Galaxy NGC 4548 O. K. Sil'chenko* Sternberg Astronomical Institute, Universitetskii pr. ... This nucleus, a probable circumnuclear disk coplanar with the global galactic disk, is embedded in the bulge whose stars are generally also young, T 4 Gyr, although they are a factor of 2.5 more metalpoor. ... O. K. Sil'chenko, Pis'ma Astron. ... It remains to assume that the gas at the center of NGC 4548 rotates in an inclined plane. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/n4548.pdf.gz -- 729.4 Кб -- 23.04.2002
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45. http://sn.sai.msu.ru/~sil/preprints/rings.pdf
A&A 385, 1ґ13 (2002) DOI: 10.1051/0004-6361:20020143 c ESO 2002 Astronomy & Astrophysics Chemically distinct nuclei and circumnuclear rings in lenticular galaxies NGC 4429 and NGC 7013 O. K. Sil'chenko1, 1 2 3 4 2,3 and V. L. Afanasiev4 Sternberg Astronomical Institute, University Av. ... An analysis of the gas and star kinematics in the centers of the galaxies has revealed the presence of an inclined circumnuclear disk in NGC 7013 and the existence of minibar in NGC 4429. ... Fig. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/rings.pdf -- 536.9 Кб -- 18.03.2002
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46. http://sn.sai.msu.ru/~sil/preprints/n7217_aa.ps.gz
... 364, 479--490 (2000) ASTRONOMY AND ASTROPHYSICS Decoupled nuclei and nuclear polar rings in regular spiral galaxies NGC 7217 # O.K. Sil'chenko 1,##,### and V.L. Afanasiev 2,+ 1 Sternberg Astronomical Institute, University av. ... Kinematics of stars and gas in NGC 7217 4.1. ... Twoґdimensional lineґofґsight velocity fields for the stars (left) and for the ionized gas (middle), and the map of the stellar velocity dispersion (right) in the central 16 ## в 16 ## of NGC 7217. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/n7217_aa.ps.gz -- 430.8 Кб -- 01.02.2001
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47. http://sn.sai.msu.ru/~sil/preprints/pazh4036.pdf.gz
... A Chemically Decoupled Nucleus and Structure of the Nuclear Region in the S0 Galaxy NGC 4036І O. K. Sil'chenko1 * and V. V. Vlasyuk2 2 Sternberg Astronomical Institute, Universitetskioe pr. ... The unresolved nucleus of NGC 4036 is shown to be chemically decoupled: [Mg/Fe] = +0.3 at the very center, whereas in the immediate vicinity of its nucleus, this ratio abruptly drops to +0.1 and does not change further along the radius. ... However, the major-axis turn within R < 5 should be considered real. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/pazh4036.pdf.gz -- 193.2 Кб -- 20.12.2000
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48. http://sn.sai.msu.ru/~sil/preprints/990399.ps.gz
... Printed in U.S.A. ( FACEґON GALAXIES NGC 524 AND NGC 6340 : CHEMICALLY DECOUPLED NUCLEI AND INCLINED CIRCUMNUCLEAR DISKS O. K. SILоCHENKO1 Sternberg Astronomical Institute, Moscow, 119899 ... Moscow Branch ; olga=sai.msu.su Received 1999 September 1 ; accepted 2000 May 2 ABSTRACT The central regions of the earlyґtype disk galaxies NGC 524 and NGC ... 2, 2000 FACEґON GALAXIES NGC 524 AND NGC 6340 743 emission line [N II] j6583, which is strong in the centers of NGC 524 and NGC...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/990399.ps.gz -- 254.2 Кб -- 24.08.2000
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49. http://sn.sai.msu.ru/~sil/preprints/2300028.ps.gz
... By undertaking a spectral and photometric investiґ gation of the central part of the bright elliptical galaxy NGC 759, we have found an optical counterpart for the circumnuclear molecular gas ring with the radius of # 3 ## (# 1 kpc) which was earlier reported by Wiklind et al. ... 2 Fig. ... More likely, this ring may be a consequence of a tidal encounter between the elliptical galaxy NGC 759 and a large spiral galaxy which was accompanied by a substantial gas accretion. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/2300028.ps.gz -- 337.9 Кб -- 20.04.2000
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50. http://sn.sai.msu.ru/~sil/preprints/990234.ps.gz
... Printed in U.S.A. ( YOUNG STELLAR NUCLEI IN THE LENTICULAR GALAXIES. ... We пnd a rather young stellar nucleus, with a mean population age of 1.5 ^ 0.5 Gyr, which is more metalґrich than the bulge at RB 1 kpc by an order of magnitude. ... But the center of a galaxy is a special place ; the stellar nucleus may have a particular evolution that di+ers from the evolution of the whole galaxy. ... We have detected intermediateґage stellar popuґ lations in the centers of these galaxies. ...
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Ссылки http://sn.sai.msu.ru/~sil/preprints/990234.ps.gz -- 400.3 Кб -- 19.01.2000
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51. MPFS reduction routines HELP
... Next Routine] [List of Routines] NAME: ADD_HEADER PURPOSE: addition information from FITS-headers MPFS-frames DESCRIPTION: The function computes the total exposure, mean value zenit distance and modified FITS header CALLING SEQUENCE: Result =ADD_HEADER( headers ) CATEGORY: reduction MPFS-data INPUTS: Headers = String array FITS-headers from the MPFS data OUTPUTS: Header = String array containing the header from the FITS file. ... OPTIONAL INPUT KEYWORD PARAMETERS: BEFORE = Keyword string name. ...
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Ссылки http://sn.sai.msu.ru/~sil/mpfshelp/ -- 91.4 Кб -- 24.08.1999
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