STEPS TOWARD DETERMINATION OF THE SIZE AND STRUCTURE OF THE BROAD-LINE REGION IN ACTIVE GALACTIC NUCLEI .2. AN INTENSIVE STUDY OF NGC-5548 AT OPTICAL WAVELENGTHS

被引：277

作者：

PETERSON, BM

BALONEK, TJ

BARKER, ES

BECHTOLD, J

BERTRAM, R

BOCHKAREV, NG

BOLTE, MJ

BOND, D

BOROSON, TA

CARINI, MT

CARONE, TE

CHRISTENSEN, JA

CLEMENTS, SD

COCHRAN, AL

COHEN, RD

CRAMPTON, D

DIETRICH, M

ELVIS, M

FERGUSON, A

FILIPPENKO, AV

FRICKE, KJ

GASKELL, CM

HALPERN, JP

HUCHRA, JP

HUTCHINGS, JB

KOLLATSCHNY, W

KORATKAR, AP

KORISTA, KT

KROLIK, JH

LAME, NJ

LAOR, A

LEACOCK, RJ

MACALPINE, GM

MALKAN, MA

MAOZ, D

MILLER, HR

MORRIS, SL

NETZER, H

OLIVEIRA, CLM

PENFOLD, J

PENSTON, MV

PEREZ, E

POGGE, RW

RICHMOND, MW

ROMANISHIN, W

ROSENBLATT, EI

SADDLEMYER, L

SADUN, A

SAWYER, SR

SHIELDS, JC

机构：

[1] UNIV CALIF SANTA CRUZ,LICK OBSERV,MT HAMILTON,CA 95140

[2] COLGATE UNIV,HAMILTON,NY 13346

[3] MV LOMONOSOV STATE UNIV,STERNBERG STATE ASTRON INST,MOSCOW 117234,USSR

[4] UNIV TEXAS,DEPT ASTRON,AUSTIN,TX 78712

[5] NATL RES COUNCIL CANADA,DOMINION ASTROPHYS OBSERV,OTTAWA K1A 0R6,ONTARIO,CANADA

[6] NATL OPT ASTRON OBSERV,KITT PEAK NATL OBSERV,TUCSON,AZ 85726

[7] UNIV ARIZONA,LUNAR & PLANETARY LAB W,TUCSON,AZ 85721

[8] UNIV FLORIDA,ROSEMARY HILL OBSERV,GAINESVILLE,FL 32611

[9] UNIV STERNWARTE GOTTINGEN,W-3400 GOTTINGEN,GERMANY

[10] UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109

[11] COLUMBIA UNIV,DEPT ASTRON,NEW YORK,NY 10027

[12] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218

[13] TEL AVIV UNIV,SCH PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

[14] TEL AVIV UNIV,WISE OBSERV,IL-69978 TEL AVIV,ISRAEL

[15] MT ROYAL COLL,DEPT MATH PHYS & ENGN,CALGARY T3E 6K6,ALBERTA,CANADA

[16] UNIV CALIF LOS ANGELES,DEPT ASTRON,LOS ANGELES,CA 90024

[17] ROYAL GREENWICH OBSERV,HAILSHAM BN27 1RP,E SUSSEX,ENGLAND

[18] UNIV OKLAHOMA,DEPT PHYS & ASTRON,NORMAN,OK 73019

[19] INST ASTROFIS CANARIAS,E-38200 LA LAGUNA,SPAIN

[20] ACAD SCI USSR,SPECIAL ASTROPHYS OBSERV,MOSCOW V-71,USSR

[21] AGNES SCOTT COLL,DECATUR,GA 30030

[22] MICHIGAN STATE UNIV,DEPT ASTRON,E LANSING,MI 48824

[23] NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771

[24] NATL CENT UNIV,INST PHYS & ASTRON,CHUNGLI 32054,TAIWAN

[25] NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS,GREENBELT,MD 20771

[26] MAX PLANCK INST ASTRON,W-6900 HEIDELBERG,GERMANY

[27] UNIV TEXAS,MCDONALD OBSERV,AUSTIN,TX 78712

[28] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85724

[29] GEORGIA STATE UNIV,DEPT PHYS & ASTRON,ATLANTA,GA 30303

[30] UNIV CALIF SAN DIEGO,CTR ASTROPHYS & SPACE SCI,LA JOLLA,CA 92093

[31] HARVARD SMITHSONIAN CTR ASTROPHYS,CTR ASTROPHYS,CAMBRIDGE,MA 02138

[32] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720

[33] UNIV BRITISH COLUMBIA,DEPT ASTRON,VANCOUVER V6T 1W5,BC,CANADA

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 368卷 / 01期

关键词：

GALAXIES; INDIVIDUAL; (NGC; 5548); SEYFERT; SPECTROPHOTOMETRY;

D O I：

10.1086/169675

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a large, international program of ground-based optical spectroscopy and photometry of the variable Seyfert 1 galaxy NGC 5548 undertaken in support of an IUE monitoring campaign described by Clavel and coworkers. In this contribution, we present the data base and describe the methods used to correct for systematic differences between spectra from different sources. Optical continuum and H-beta emission-line continuum is qualitatively the same as the ultraviolet and optical continuum measurements the behavior of the ultraviolet continuum. Cross-correlation of the ultraviolet and optical continuum measurements does not reveal any significant lag between them. The H-beta does not reveal any significant lag between them. The H-beta emission-line variations show the same basic pattern as seen in the continuum and ultraviolet emission lines, with H-beta lagging behind the continuum by approximately 20 days. This is significantly larger than the approximately 10 day lag deduced for Ly-alpha.

引用

页码：119 / 137

页数：19

共 15 条

[1]

CLAVEL J, 1991, IN PRESS AP J

[2] THE DISCRETE CORRELATION-FUNCTION - A NEW METHOD FOR ANALYZING UNEVENLY SAMPLED VARIABILITY DATA [J].