University of Massachusetts Amherst ScholarWorks@UMass Amherst Astronomy Department Faculty Publication Series Astronomy 1998 Origin and evolution of the Cepheus bubble NA Patel PF Goldsmith MH Heyer RL Snell P Pratap Follow this and additional works at: https://scholarworks.umass.edu/astro_faculty_pubs Part of the Astrophysics and Astronomy Commons Recommended Citation Patel, NA; Goldsmith, PF; Heyer, MH; Snell, RL; and Pratap, P, "Origin and evolution of the Cepheus bubble" (1998). Astrophysical Journal. 645. https://doi.org/10.1086/306305 This Article is brought to you for free and open access by the Astronomy at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Astronomy Department Faculty Publication Series by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact
[email protected]. THE ASTROPHYSICAL JOURNAL, 507:241È253, 1998 November 1 ( 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A. ORIGIN AND EVOLUTION OF THE CEPHEUS BUBBLE NIMESH A. PATEL Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138; npatel=cfa.harvard.edu PAUL F. GOLDSMITH National Astronomy and Ionospheric Center, Cornell University, NAIC, Department of Astronomy, Ithaca, NY 14853 MARK H. HEYER AND RONALD L. SNELL Five College Radio Astronomy Observatory, University of Massachusetts, Amherst, MA 01003 AND PREETHI PRATAP Haystack Observatory, Westford, MA 01886-1299 Received 1997 December 10; accepted 1998 June 10 ABSTRACT We have imaged a 10¡ ] 10¡ region of the Cepheus bubble in the J \ 1È0 line of CO and the 21 cm line of atomic hydrogen. The CO emission deÐnes a giant expanding shell 120 pc in diameter, which is similar to that seen in the IRAS sky maps.