Hot water around late-type stars - Detection of two millimeter-wave emission lines from the nu2 vibrationally excited state

1989 ◽  
Vol 341 ◽  
pp. L91 ◽  
Author(s):  
Karl M. Menten ◽  
Gary J. Melnick
Keyword(s):  
Excited State ◽  
Millimeter Wave ◽  
Hot Water ◽  
Emission Lines ◽  
Late Type ◽  
Vibrationally Excited ◽  
Wave Emission

The polarization of millimeter-wave emission lines in dense interstellar clouds

1983 ◽  
Vol 267 ◽  
pp. 126 ◽  
Author(s):  
P. G. Wannier ◽  
N. Z. Scoville ◽  
R. Barvainis
Keyword(s):  
Millimeter Wave ◽  
Emission Lines ◽  
Interstellar Clouds ◽  
Wave Emission

Linear polarization of millimeter-wave emission lines in clouds without large velocity gradients

1988 ◽  
Vol 328 ◽  
pp. 304 ◽  
Author(s):  
D. C. Lis ◽  
P. F. Goldsmith ◽  
R. L. Dickman ◽  
C. R. Predmore ◽  
A. Omont ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Linear Polarization ◽  
Emission Lines ◽  
Velocity Gradients ◽  
Large Velocity ◽  
Wave Emission

scholarly journals New detections of 321 GHz water masers toward late-type stars

2002 ◽  
Vol 206 ◽  
pp. 314-317
Author(s):  
Tarja Liljeström ◽  
Anders Winnberg ◽  
Roy Booth
Keyword(s):  
Water Vapor ◽  
Hot Water ◽  
Late Type ◽  
Vibrationally Excited ◽  
Mira Variable ◽  
Maser Line ◽  
Shock Motion ◽  
Water Masers ◽  
Water Maser

The SEST telescope has been used for a submillimeter water maser survey toward late-type stars. Six new 321 GHz water masers were detected. These, as well as the earlier reported sources, VY CMa and o Cet, were also observed in the vibrationally excited water maser line at 96 GHz. However, only VY CMa and o Cet showed the 96 GHz emission. The line velocity of o Cet is blueshifted, suggesting that the hot water vapor at 96 GHz takes part in the pulsation-shock motion of the Mira variable.

Excited-State Dynamics in the RNA Nucleotide Uridine 5’-Monophosphate Investigated by Femtosecond Broadband Transient Absorption Spectroscopy

2019 ◽  
Author(s):  
Matthew M. Brister ◽  
Carlos Crespo-Hernández
Keyword(s):  
Excited State ◽  
Excited States ◽  
Ground State ◽  
Transient Absorption ◽  
Electronic Energy ◽  
Transient Absorption Spectroscopy ◽  
Electronic Relaxation ◽  
Vibrationally Excited ◽  
Excited State Dynamics ◽  
Π State

<p></p><p> Damage to RNA from ultraviolet radiation induce chemical modifications to the nucleobases. Unraveling the excited states involved in these reactions is essential, but investigations aimed at understanding the electronic-energy relaxation pathways of the RNA nucleotide uridine 5’-monophosphate (UMP) have not received enough attention. In this Letter, the excited-state dynamics of UMP is investigated in aqueous solution. Excitation at 267 nm results in a trifurcation event that leads to the simultaneous population of the vibrationally-excited ground state, a longlived <sup>1</sup>n<sub>O</sub>π* state, and a receiver triplet state within 200 fs. The receiver state internally convert to the long-lived <sup>3</sup>ππ* state in an ultrafast time scale. The results elucidate the electronic relaxation pathways and clarify earlier transient absorption experiments performed for uracil derivatives in solution. This mechanistic information is important because long-lived nπ* and ππ* excited states of both singlet and triplet multiplicities are thought to lead to the formation of harmful photoproducts.</p><p></p>

scholarly journals Millimeter wave emission from a rotating electron ring in a rippled magnetic field

1984 ◽  
Vol 44 (3) ◽  
pp. 280-282 ◽  
Author(s):  
G. Bekefi ◽  
R. E. Shefer ◽  
W. W. Destler
Keyword(s):  
Magnetic Field ◽  
Millimeter Wave ◽  
Electron Ring ◽  
Wave Emission

scholarly journals Decay Rate Measurement of the First Vibrationally Excited State ofMgH+in a Cryogenic Paul Trap

2013 ◽  
Vol 111 (5) ◽  
Author(s):  
O. O. Versolato ◽  
M. Schwarz ◽  
A. K. Hansen ◽  
A. D. Gingell ◽  
A. Windberger ◽  
...  
Keyword(s):  
Excited State ◽  
Decay Rate ◽  
Paul Trap ◽  
Rate Measurement ◽  
Vibrationally Excited

scholarly journals Millimeter-wave emission during the 2003 low excitation phase ofηCarinae

2005 ◽  
Vol 437 (3) ◽  
pp. 977-981 ◽  
Author(s):  
Z. Abraham ◽  
D. Falceta-Gonçalves ◽  
T. P. Dominici ◽  
L.-Å. Nyman ◽  
P. Durouchoux ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Wave Emission

scholarly journals Millimeter-wave spectroscopy of HC5N in vibrationally excited states below 500 cm$\mathsf{^{-1}}$

2004 ◽  
Vol 425 (2) ◽  
pp. 767-772 ◽  
Author(s):  
K. M. T. Yamada ◽  
C. Degli Esposti ◽  
P. Botschwina ◽  
P. Förster ◽  
L. Bizzocchi ◽  
...  
Keyword(s):  
Excited States ◽  
Millimeter Wave ◽  
Vibrationally Excited ◽  
Millimeter Wave Spectroscopy

Millimeter-wave spectroscopy of the FeCO radical in the ν2 and ν3 vibrationally excited states

2015 ◽  
Vol 143 (1) ◽  
pp. 014303 ◽  
Author(s):  
Keiichi Tanaka ◽  
Mitsuhiro Nakamura ◽  
Mitsuaki Shirasaka ◽  
Ai Sakamoto ◽  
Kensuke Harada ◽  
...  
Keyword(s):  
Excited States ◽  
Millimeter Wave ◽  
Vibrationally Excited ◽  
Millimeter Wave Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document