Famous last words...

Too precious to be forgotten

 

All Time Grand Prize Winner:

"From the intensity ratio of the [CN] lines with K = 0 and K = 1 a rotational temperature of 2.3o K follows, which has of course only a very restricted meaning."

Gerhard Herzberg  in Molecular Spectra and Molecular Structure I. Spectra of Diatomic Molecules (Van Nostrand: Princeton, NJ), p. 496 (1950).

Click
here and here for the reason why that finding has a little more than a “restricted” meaning.


From here on (mostly) personal items involving people I have met over my career in astronomy.
Enjoy, Karl Menten

Most profound truth:

"Some things are just fundamentally not easy."


Chris Carilli to Karl Menten (KMM) after the former had given a course lecture on radio interferometry at Bonn University’s  Argelander-Institut für Astronomie, discussing the difficulty to present some of its basic concepts to students. KMM agreed. (July 12, 2005).

According to the citation of the
Max-Planck-Forschungspreis, which he won in 2005, Chris is "one of the leading experts on radio astronomy world-wide." So students out there, don't despair!









ˇ         Simplicity:
Email exchange between
Lew Snyder and KMM after KMM sent him the lukewarm referee response to a joint  IRAM 30 meter telescope  observing proposal:

Date: Fri, 7 Nov 2003 13:36:25 -0600 (CST)
From: Lew Snyder <snyder@astro.uiuc.edu>
To: kmenten@mpifr-bonn.mpg.de
Subject: Re: [Fwd: 30m Proposal 219.03 Menten]

Karl

I never realized before that even proposals from MPIfR Directors are subject to
idiot reviews!

Lew
-------------------------------------------------------------------------------------
Date: Sat, 8 Nov 2003 10:30:19 +0100 (MET)
From: Karl Menten <kmenten@mpifr-bonn.mpg.de>
To: Lew Snyder <snyder@astro.uiuc.edu>
Subject: Re: [Fwd: 30m Proposal 219.03 Menten]

Dear Lew,

would you mind putting that on my Famous Last Words page?

Karl
-------------------------------------------------------------------------------------
Date: Sat, 8 Nov 2003 10:21:01 -0600 (CST)
From: Lew Snyder <snyder@astro.uiuc.edu>
To: kmenten@mpifr-bonn.mpg.de
Subject: Re: [Fwd: 30m Proposal 219.03 Menten]

Karl
Be my guest. I have complained for years that telescope proposal reviewers
seldom understand or appreciate any molecular line proposals that are more
complicated than the most mundane CO survey.

Lewis Emil Snyder is one of the true pioneers of molecular radio astronomy. During his long and distinguished career he discovered many molecules for the first time in the interstellar medium. These include the first polyatomic species formaldehyde (H2CO), which he found in 1969. Many of the molecules that he and his collaborators discovered are staples of dense interstellar cloud chemistry: hydrogen cyanide (HCN), isocyanic acid (HNCO), “X-ogen”, which later turned out to be HCO+, methyl acetylene (CH3CCH), maser emission was identified as arising from silicon monoxide (SiO), dimethyl ether (CH3)2O), sulfur dioxide (SO2), formyl (HCO), and nitroxyl (HNO). Somewhat later on, methyldiacetylene (CH3C4H) and acetic acid (CH3COOH) were added to this impressive list.

As far as I know, Lew
never published a single paper dealing with 12C16O.

In the 1990s, Lew and his students indentified an extremely hot and compact molecular cloud in the constellation of Sagittarius whose content in complex molecules is second to none. Being very proud of his German heritage (Schneider Ž Snyder), he called it the “Large Molecule Heimat”. Here’s a very nice account of Lew’s on the state of the art of the field.

Even before their discovery of formaldehyde, Lew and Dave Buhl, suggested the detectability of interstellar water vapor in spectral lines near frequencies of 22 and 183 GHz. Their observing request to the Green Bank 140 ft. telescope was rejected, however, because of an influential, but (in this case) narrow minded referee’s opinion. The 22 GHz line was discovered that same year by a team from the University of California, Berkeley. It always shows natural maser emission and has become one of the most observed lines in radio astronomy.

The whole story is recounted in a chapter of the highly interesting (though unfortunately no longer available)
Serendipitous Discoveries in Radio Astronomy compiled by K. Kellermann and B. Sheets. This collection gives a great impression of the meandering (hi)story of radio astronomy in which chance quite often played an important role.

The 183 GHz H
2O line was discovered many years later (in 1990) by Pepe Cernicharo and his collaborators, using the IRAM 30 meter diameter telescope on the Pico de Veleta near Granada, Spain.

For pictures of Lew from the olden days and from more recently, click Bob Rood's Photo Gallery Master Index.

            (updated September 27, 2008)






      Reported by Neil Albaugh, who was a Technical Specialist with NRAO from 1964 to 1977 and was involved in building many receivers that were used on various Green Bank and Kitt Peak telescopes. NeiI writes “I was privileged to work with many astronomers during my time there, including Peter Mezger.” Presently, Neil co-runs Diamond Bell Technology, an electronics component company based in Tucson, Arizona. Neil is the guy on the far right of this picture, which shows the 1950s SF movies-style command console in the control room of the legendary (if ugly) NRAO Green Bank 140 ft. telescope. Peter Mezger looks at you from the left. 

      Ben and Pat jointly discovered many molecules for the first time in interstellar clouds, including ethyl alcohol. Yes, there’s lots of the good stuff around in space! To cite their 1975 Publication: “During early October of 1975 we located a truly astronomical source of ethyl alcohol in the general direction of the center of our Galaxy. Preliminary estimates indicate that the alcoholic content of this cloud (Sgr B2), if purged of all impurities and condensed, would yield approximately 1028 fifths at 200 proof. This exceeds the total amount of all of man’s fermentation efforts since the beginning of recorded history.”
(added September 19, 2008)









Disclaimer: All of the above has really been said or written or both, although the representations here might not be exactly verbatim.

Policy information:
Please let me know if you

Karl M. Menten (started 09-August-2003)