Cowan, John - Department of Physics and Astronomy, University of Oklahoma

• NAME: John J. Cowan Date of Birth: April 3, 1948
• A STUDY OF COMPACT RADIO SOURCES IN NEARBY FACE-ON SPIRAL GALAXIES. I. LONG-TERM EVOLUTION OF M83
• n the Big Bang at the beginning of the Uni-verse, the lightest elements, hydrogen,
• GALACTIC EVOLUTION OF Sr, Y, AND Zr: A MULTIPLICITY OF NUCLEOSYNTHETIC PROCESSES Claudia Travaglio,1,2
• Halo Star Abundances and Heavy Element Nucle-J. J. Cowan1
• THE RISE OF THE s-PROCESS IN THE GALAXY Jennifer Simmerer and Christopher Sneden
• HUBBLE SPACE TELESCOPE OBSERVATIONS OF HEAVY ELEMENTS IN METAL-POOR GALACTIC HALO STARS
• IMPROVED LABORATORY TRANSITION PROBABILITIES FOR Pt i AND APPLICATION TO THE PLATINUM ABUNDANCES OF BD +17
• NUCLEOSYNTHESIS IN THE EARLY GALAXY F. Montes,1,2,3
• Abundance Signatures in Halo Stars: Clues to Nucleosynthesis in the First Stars
• The Astrophysical Journal, 698:19631980, 2009 June 20 doi:10.1088/0004-637X/698/2/1963 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• Publications of the Astronomical Society of the Pacific, 114:12931308, 2002 December 2002. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A.
• arXiv:astro-ph/0309802v129Sep2003 Carnegie Observatories Astrophysics Series, Vol. 4
• University of Oklahoma, Norman, Oklahoma, USA
• The Big Bang gave us hydrogen, helium and a fraction of lithium. All the other ele-
• THE RTHE R--PROCESS IN HALOPROCESS IN HALO J. J. COWANJ. J. COWAN
• RR--PROCESS SIGNATURES INPROCESS SIGNATURES IN HALO STARSHALO STARS
• THE AGE OF THE OLDESTTHE AGE OF THE OLDEST STARS AS A CONSTRAINT ONSTARS AS A CONSTRAINT ON
• ACTIVITIES AT THE UNIVERSITY OF OKLAHOMA TEACHING ACTIVITIES
• arXiv:astro-ph/0210125v14Oct2002 Observations of Neutron-Capture Elements in the Early Galaxy
• NEUTRONNEUTRON--CAPTURE ELEMENTSCAPTURE ELEMENTS IN ULTRAIN ULTRA--METALMETAL--POOR STARSPOOR STARS
• THE ASTROPHYSICAL JOURNAL, 544 : 302319, 2000 November 20 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• PoS(NIC-IX)205 In Memory of Al Cameron
• Abundances and Ages in Halo Stars # John J. Cowan 1 , James W. Truran 2 , and Christopher Sneden 3
• Europium Isotopic Abundances in Very Metalpoor Stars 1 Christopher Sneden 2 , John J. Cowan 3 , James E. Lawler 4 , Scott Burles 5 , Timothy C.
• The Astrophysical Journal, 709:715724, 2010 February 1 doi:10.1088/0004-637X/709/2/715 C 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• Stellar Abundances: The r-Process and Supernovae JOHN J. COWAN
• The Astrophysical Journal Supplement Series, 182:5179, 2009 May doi:10.1088/0067-0049/182/1/51 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• BINARY BLUE METAL-POOR STARS: EVIDENCE FOR ASYMPTOTIC GIANT BRANCH MASS TRANSFER
• X-Ray and Radio Connections www.aoc.nrao.edu/events/xraydio Santa Fe NM, 3-6 February 2004 (4.12) 1 PRELIMINARY RADIO ANALYSIS FROM AN X-RAY/RADIO
• arXiv:astroph/0109194 Galactic Cosmochronometry from Radioactive Elements
• Stellar Abundance Observations John J Cowany 1 , Christopher Snedenz James W Truranxand De
• Probing the Neutron-Capture Nucleosynthesis History of Galactic James W. Truran 1 , John J. Cowan 2 , Catherine A. Pilachowski 3 and Christopher Sneden 4
• arXiv:astro-ph/0409552v122Sep2004 Neutron-Capture Element Abundances in Halo Stars
• RProcess in Collapsing O/Ne/Mg Cores J. Craig Wheeler, 1 John J. Cowan, 2 and Wolfgang Hillebrandt 3
• HALO STAR ABUNDANCESHALO STAR ABUNDANCES AND HEAVY ELEMENTAND HEAVY ELEMENT
• Genesis of the Heaviest Elements in the Milky Way Christopher Sneden,
• Europium, Samarium, and Neodymium Isotopic Fractions in Metal-Poor Stars
• books and arts NATURE|VOL428|25MARCH2004|www.nature.com/nature 369
• Astrophysical Ages and Time Scales ASP Conference Series, Vol. TBD, 2001
• THE PROBABLE DETECTION OF SN 1923A: THE OLDEST RADIO SUPERNOVA?
• arXiv:astro-ph/0605137v14May2006 NASA LAW, February 14-16, 2006, UNLV, Las Vegas
• The Astrophysical Journal, 536:L85--L88, 2000 June 20 # 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• GHRS Observations of NeutronCapture Elements in MetalPoor Halo Stars
• The Astrophysical Journal, 533:L139--L142, 2000 April 20 # 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• arXiv:astroph/0101440 Halo Star Abundances and rProcess Synthesis
• November 25, 2002 8:56 WSPC/Trim Size: 9in x 6in for Proceedings cowan R-PROCESS ABUNDANCE SIGNATURES
• RevMexAA (Serie de Conferencias), 00, 1--8 (2000) THE AGE OF THE GALAXY FROM THORIUM COSMOCHRONOMETRY 3
• PoS(NIC-IX)014 r-Process Enhanced Halo Stars
• arXiv:astroph/0101439 NEUTRONCAPTURE ELEMENT TRENDS IN THE HALO
• A SIMPLE MODEL FOR rPROCESS SCATTER AND HALO Brian D. Fields
• On the Site of the Weak rProcess Component #
• THE FADING RADIO EMISSION FROM SN 1961V: EVIDENCE FOR A TYPE II PECULIAR SUPERNOVA?
• The Astrophysical Journal, 508:L000--L000, 1998 November 20 q 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• arXiv:astroph/0101438 NUCLEAR CHRONOMETERS
• arXiv:astroph/0103222 The Early Formation, Evolution and
• NEWS AND VIEWS The SupernovaBlack Hole Connection
• We are using both space-based (Hubble Space Telescope, HST) and ground-based telescopes to make extensive studies of Galactic halo stars. These stars contain nucleosynthesis products (from the rapid neutron capture process, r-process) from the
• THORIUM AND URANIUM CHRONOMETERS APPLIED TO CS 31082-001 Hendrik Schatz,1,2
• JOHN J. COWAN AST-0707447 Annual Project Report-Year Three Page 1 We had a very productive third year with many significant new results and discoveries. The P.I. was
• THE ASTROPHYSICAL JOURNAL, 530 : 783799, 2000 February 20 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• EUROPIUM, SAMARIUM, AND NEODYMIUM ISOTOPIC FRACTIONS IN METAL-POOR STARS Ian U. Roederer,1
• The Astrophysical Journal Supplement Series, 182:8096, 2009 May doi:10.1088/0067-0049/182/1/80 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• The Astrophysical Journal, 627:L145L148, 2005 July 10 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• THE HOBBY-EBERLY TELESCOPE CHEMICAL ABUNDANCES OF STARS IN THE HALO (CASH) PROJECT. I. THE LITHIUM-, s-, AND r-ENHANCED METAL-POOR GIANT HKII 17435005321
• STELLAR ABUNDANCESTELLAR ABUNDANCE OBSERVATIONSOBSERVATIONS
• STELLAR ABUNDANCESTELLAR ABUNDANCE OBSERVATIONS ANDOBSERVATIONS AND
• Neutron Capture Nucleosynthesis in Early Galactic Environments #
• THE ASTROPHYSICAL JOURNAL, 521 : 194205, 1999 August 10 1999. The American Astronomical Society. All rights reserved. Printed in U.S.A.
• PROBING THEPROBING THE NUCLEOSYNTHESIS PRODUCTSNUCLEOSYNTHESIS PRODUCTS
• The Big Bang explosion at the start of the Universe was responsible for the production of the light elements hydrogen and helium, along with
• THE RTHE R--PROCESS IN HALOPROCESS IN HALO J. J. COWANJ. J. COWAN
• TB, MB, APJ/369838/ART, 7/10/2010 The Astrophysical Journal, 723:119, 2010 ??? doi:10.1088/0004-637X/723/1/1
• NEUTRONNEUTRON--CAPTURE ELEMENTSCAPTURE ELEMENTS IN ULTRAIN ULTRA--METALMETAL--POOR STARSPOOR STARS
• A Search for Radio Emission from Supernovae With Ages from About One Week to More Than 80 Years
• IMPROVED LABORATORY TRANSITION PROBABILITIES FOR Nd ii AND APPLICATION TO THE NEODYMIUM ABUNDANCES OF THE SUN AND THREE METAL-POOR STARS
• NEW ABUNDANCE DETERMINATIONS OF CADMIUM, LUTETIUM, AND OSMIUM IN THE r-PROCESS ENRICHED STAR BD +17 3248
• arXiv:astroph/0204294 The r-Process and Chronometers
• Observed HST-STIS and synthetic (computed) spectra in the region surrounding the gold spectral line at a wavelength of 2675.94 Angstroms. (One Angstrom = 1/100 millionth of a centimeter).
• The Nature of SN 1961V You-Hua Chu1
• HST Observations of NeutronCapture Elements in Very MetalPoor Stars Christopher Sneden, 1 John J. Cowan, 2 Debra L. Burris, 2 and James W. Truran 3
• THE CONTINUING RADIO EVOLUTION OF SN 1970G Christopher J. Stockdale 1 , W. M. Goss 2 , John J. Cowan 1 , and R. A. Sramek 2
• University of Basel -October 14, 2011 Heavy Element Syntheis
• The Astrophysical Journal Supplement Series, 194:35 (11pp), 2011 June doi:10.1088/0067-0049/194/2/35 C 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• Carnegie Observatories Astrophysics Series, Vol. 5: RR Lyrae Stars, Metal-Poor Stars, and the Galaxy
• EUROPIUM, SAMARIUM, AND NEODYMIUM ISOTOPIC FRACTIONS IN METAL-POOR STARS Ian U. Roederer,1
• The Astronomical Journal, 141:175 (18pp), 2011 June doi:10.1088/0004-6256/141/6/175 C 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
• The impact of recent advances in laboratory astrophysics on our understanding of the cosmos This article has been downloaded from IOPscience. Please scroll down to see the full text article.