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THE ASTROPHYSICAL JOURNAL Supplement Series A. DALGARNO HELMUT A. ABT EUGENE H. AVRETT Letters Editor Editor-in-Chief Deputy Letters Editor Center for Astrophysics Kitt Peak National Observatory Center for Astrophysics Scientific Editors GREGORY D. BOTHUN GEOFFREY BURBIDGE BERNHARD M. HAISCH SUSAN KLEINMANN FULVIO MELIA University of Oregon University of California, Solar and Astrophysics Lab., University of Massachusetts University of Arizona San Diego Lockheed Martin STEVEN N. SHORE EDWARD M. SION CHRISTOPHER SNEDEN YERVANT TERZIAN JOHN H. THOMAS Indiana University, Villanova University University of Texas Cornell University University of Rochester South Bend VIRGINIA TRIMBLE ETHAN T. VISHNIAC STEVEN P. WILLNER EDWARD L. WRIGHT University of Maryland and University of Texas Smithsonian Astrophysical University of California, University of California, Irvine Observatory Los Angeles AAS PUBLICATIONS BOARD ROBERT J. HANISCH (1996-1999), Chairperson Space Telescope Science Institute KAREN S. BJORKMAN (1996-1999) MOSHE ELITZUR (1995-1998) BRUCE ELMEGREEN (1998-2001) University of Toledo University of Kentucky IBM TJ Watson Research Center ALYSSA A. GOODMAN (1998-2001) DIMITRI M. MIHALAS (1996-1999) SUSAN TEREBEY (1997-2000) Harvard University University of Illinois California Institute of Technology Publication Manager: JULIE STEFFEN Production Manager: KIM LANGFORD Chief Manuscript Editor: GERALDINE BRADY Manuscript Editors: WALTER G. GLascorF III, BETH GARRISON, THAD A. Doria, PAUL RUICH, SHARON JENNINGS, STEPHANIE O. NEVINS, BAHARE RASHIDI, ELIZABETH HUYCK, PETER M. RIVARD, MARY ALICE HINSHAW, ELISSA PARK, SHARON C. BRINKMAN, AND DANIEL J. SMITH Production Staff: CiNDY GARRETT, SUCHITRA GURURAJ, ABIGAIL C. FACTOR, JAMES LAFOREST, AND AIMEE BALDRIDGE Tucson Editorial Office: JANICE SEXTON, ALICE PROCHNOW, CANDACE M. HAUSER, CHEYENNE ROSS, AND RACHEL WILLIAMS VOLUME 115 1998 MARCH AND APRIL PUBLISHED BY THE UNIVERSITY OF CHICAGO PRESS FOR THE AMERICAN ASTRONOMICAL SOCIETY © 1998 BY THE AMERICAN ASTRONOMICAL SOCIETY. ALL RIGHTS RESERVED. PUBLISHED MONTHLY COMPOSED BY SANTYPE INTERNATIONAL LIMITED, SALISBURY, ENGLAND PRINTED BY CAPITAL CITY PRESS, INC. MONTPELIER, VERMONT, U.S.A. THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES CONTENTS OF VOLUME 115 1998 MARCH, Number 1 THE MX NORTHERN ABELL CLUSTER REDSHIFT SURVEY K. Slinglend, D. Batuski, C. Miller, S. Haase, K. Michaud, & J. M. Hill A HIGH-RESOLUTION ADAPTIVE MOVING MESH HYDRODYNAMIC ALGORITHM Ue-Li Pen UNIVERSITY OF BRITISH COLUMBIA-NASA MULTI-NARROWBAND SURVEY. I. DESCRIPTION AND PHOTOMETRIC PROPERTIES OF THE SURVEY Paul Hickson & Mark K. Mulrooney VERY WIDE GALAXY PAIRS OF THE NORTHERN AND SOUTHERN SKY Tyler E. Nordgren, Jayaram N. Chengalur, E. E. Salpeter, & Yervant Terzian STAR FORMATION IN THE CEPHEUS FLARE MOLECULAR CLOUDS. I. DISTANCE DETERMINATION AND THE YOUNG STELLAR OBJECT CANDIDATES M. Kun THE PHYSICS AND CHEMISTRY OF SMALL TRANSLUCENT MOLECULAR CLOUDS. IX. ACETYLENIC CHEMISTRY B. E. Turner, Ho-Hsin Lee, & Eric Herbst A PARTICLE CODE FOR DEFLAGRATIONS IN WHITE DWARFS. I. NUMERICAL TECHNIQUES D. Garcia-Senz, E. Bravo, & N. Serichol NEW INSTRUCTIONS TO AUTHORS 1998 APRIL, Number 2 A DETAILED INVESTIGATION OF RADIO POWER SELECTION EFFECTS RELEVANT TO THE STUDY OF CLASSICAL DOUBLE RADIO SOURCES Lin Wan & Ruth A. Daly A CCD STUDY OF THE ENVIRONMENT OF SEYFERT GALAXIES. I. THE SURVEY M. M. De Robertis, K. Hayhoe, & H. K. C. Yee STEPS TOWARD DETERMINATION OF THE SIZE AND STRUCTURE OF THE BROAD-LINE REGION IN ACTIVE GALACTIC NUCLEI. XII. GROUND-BASED MONITORING OF 3C 390.3 M. Dietrich, B. M. Peterson, P. Albrecht, M. Altmann, A. J. Barth, P. J. Bennie, R. Bertram, N. G. Bochkarev, H. Bock, J. M. Braun, A. Burenkov, S. Collier, L.-Z. Fang, O. P. Francis, A. V. Filippenko, C. B. Foltz, W. Gassler, C. M. Gaskell, M. Geffert, K. K. Ghosh, R. W. Hilditch, R. K. Honeycutt, K. Horne, J. P. Huchra, S. Kaspi, M. Kiimmel, K. M. Leighly, D. C. Leonard, Yu F. Malkov, V. Mikhailov, H. R. Miller, A. C. Morrill, J. Noble, P. T. O’Brien, T. D. Oswalt, S. P. Pebley, M. Pfeiffer, V. I. Pronik, B.-C. Qian, J. W. Robertson, A. Robinson, K.S. Rumstay, J. Schmoll, S. G. Sergeev, E. A. Sergeeva, A. I. Shapovalova, D. R. Skillman, S. A. Snedden, S. Soundarajaperumal, G. M. Stirpe, J. Tao, G. W. Turner, R. M. Wagner, S. J. Wagner, J. Y. Wei, H. Wu, W. Zheng, & Z. L. Zou THE SPEED AND ORIGIN OF THE H1 SPIRAL PATTERN IN M81 David J. Westpfahl THE RADIAL EXTENT AND WARP OF THE IONIZED GALACTIC DISK. I. A VLBA SURVEY OF EXTRAGALACTIC SOURCES TOWARD THE ANTICENTER T. Joseph W. Lazio & James M. Cordes THE FIVE COLLEGE RADIO ASTRONOMY OBSERVATORY CO SURVEY OF THE OUTER GALAXY Mark H. Heyer, Christopher Brunt, Ronald L. Snell, John E. Howe, F. Peter Schloerb, & John M. Carpenter FAR-INFRARED [C mn] LINE SURVEY OBSERVATIONS OF THE GALACTIC PLANE Takao Nakagawa, Yukari Yamashita Yui, Yasuo Doi, Haruyuki Okuda, Hiroshi Shibai, Kenji Mochizuki, Tetsuo Nishimura, & Frank J. Low UBVB DATABASE FOR CASE-HAMBURG NORTHERN AND SOUTHERN LUMINOUS STARS B. Cameron Reed iii CONTENTS Page OBSERVATIONS OF SiO (v = 0, 1, 2) J = 3-2 AND J = 2-1 EMISSION IN LATE-TYPE STARS 277 Se-Hyung Cho, Hyun-Soo Chung, Hyo-Ryoung Kim, Bob- Young Oh, Chang-Hoon Lee, & Seog-Tae Han QUADRUPOLE TRANSITION PROBABILITIES FOR THE EXCITED ROVIBRATIONAL STATES OF H, 293 L. Wolniewicz, I. Simbotin, & A. Dalgarno WEIGHTED OSCILLATOR STRENGTHS AND LIFETIMES FOR THE Si vn SPECTRUM 315 L. H. Coutinho & A. G. Trigueiros INDEX TO VOLUME 115