elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Neutral sodium from comet Hale-Bopp: a third type of tail

Cremonese, G.(1) and Boehnhardt, H.(2) and Crovisier, J.(3) and Rauer, H. and Fitzsimmons, A.(4) and Fulle, M.(5) and Licandro, J.(6) and Pollacco, D.(7) and Tozzi, G.P.(8) and West, R.M.(9) (1997) Neutral sodium from comet Hale-Bopp: a third type of tail. Astrophysical Journal Letters, L199-. American Astronomical Society.

Full text not available from this repository.

Abstract

We report on the discovery and analysis of a striking neutral sodium gas tail associated with comet C/1995 O1 Hale-Bopp. Sodium D-line emission has been observed at heliocentric distance r<&#61 1.4 AUin some long-period comets and the presence of neutral sodium in the tailward direction of a few bright comets has been noted, but the extent, and in particular the source, has never been clear. Here we describe the first observations and analysis of a neutral sodium gas tail on comet Hale-Bopp, entirely different from the previously known ion and dust tails. We show that the observed characteristics of this third type of tail are consistend with it being produced by radiation pressure due to resonance fluorescence of sodium atoms and that the lifetime for photoionization is consistent with recent theoretical calculations.

Item URL in elib:https://elib.dlr.de/35424/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=1997,
Title:Neutral sodium from comet Hale-Bopp: a third type of tail
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cremonese, G.(1)UNSPECIFIEDUNSPECIFIED
Boehnhardt, H.(2)UNSPECIFIEDUNSPECIFIED
Crovisier, J.(3)UNSPECIFIEDUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIED
Fitzsimmons, A.(4)UNSPECIFIEDUNSPECIFIED
Fulle, M.(5)UNSPECIFIEDUNSPECIFIED
Licandro, J.(6)UNSPECIFIEDUNSPECIFIED
Pollacco, D.(7)UNSPECIFIEDUNSPECIFIED
Tozzi, G.P.(8)UNSPECIFIEDUNSPECIFIED
West, R.M.(9)UNSPECIFIEDUNSPECIFIED
Date:1997
Journal or Publication Title:Astrophysical Journal Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:L199-
Publisher:American Astronomical Society
Series Name:490
Status:Published
Keywords:comets: general, comets: individual (Hale-Bopp 1995 O1), atomic processes, scattering
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:UNSPECIFIED
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Institut für Planetenerkundung
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 09:53

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.