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Re: Supernova as the cause of K-T extinction



Please note that these papers are from 1970 and 1972. No, they absolutely did not pan out. Not hypotheses in play.


On 2015-08-11 01:10, Poekilopleuron wrote:
Good day,

this is very interesting study. Does anyone know, what is the current
astronomical meaning about this interstellar ring, implying a giant
explosion 65 million years ago? If the dating is correct, then we
probably have a hot candidate for the K-T extinction event... Thank
you, Tom

So it seems that Hughes and Rutledge are simply agreeing with the
original Russell & Tucker (1970) paper.

Although they are adding that it was possibly a chain reaction of
supernovae (a la the core explosion of Niven's "Known Space"
setting) rather than a single supernova.

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu Phone: 301-405-4084
Senior Lecturer, Vertebrate Paleontology
Office: Geology 4106
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Phone: 301-405-6965
Fax: 301-314-9661

Faculty Director, Science & Global Change Program, College Park
Scholars
Office: Centreville 1216
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA

-----Original Message-----
From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On
Behalf Of john-schneiderman@cox.net
Sent: Thursday, July 30, 2015 10:15 AM
To: Seismosaurus@seznam.cz; dinosaur@usc.edu
Subject: Re: PDF request

Full citation:

Hughes, V.A.; Routledge, D, 1972. "Expanding ring of interstellar
gas with center close to the Sun" Astronomical Journal; v. 77(3) p.
210-
214; Apr 1972.

access this article using this url:

http://adsbit.harvard.edu/cgi-bin/nph-


iarticle_query?bibcode=1972AJ.....77..210H&db_key=AST&page_ind=0&plate_select=NO&data_type=GIF&type=SCREEN_GIF

John Schneiderman


does anyone happen to have an astronomical paper of V. A. Hughes
and D.
Rutledge speculating about the supposed dinosaur-killing
supernova?
Partial citation is "Astronomical Journal, v.77, pp.210-214
(April
1972)", but I couldn't find the original name of the article.
Thank you, in advance.
Vladimir

--
Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Geology Office: Geology 4106
Scholars Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Fax: 301-314-9661

Faculty Director, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA