The search for H- in astrophysical environments

Teresa Ross, Emily J. Baker, Theodore P. Snow, Joshua D. Destree, Brian L. Rachford, Meredith M. Drosback, Adam G. Jensen

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The negative ion H- is widely understood to be important in many astrophysical environments, including the atmospheres of late-type stars like the Sun. However, the ion has never been detected spectroscopically outside the laboratory. A search for the far-ultraviolet autodetaching transitions of H - in interstellar and circumstellar matter seems to be the best hope for directly detecting this ion. We undertook a highly sensitive search using data from the FUSE instalment. We concentrated on two types of sight lines: planetary nebulae, where model calculations suggest a sufficient abundance of H- to be determined, and translucent clouds, where H- might form on dust grains as an intermediate step in molecular hydrogen formation. Upper limits on H- abundances were set.

Original languageEnglish (US)
Pages (from-to)358-363
Number of pages6
JournalAstrophysical Journal
Volume684
Issue number1
DOIs
StatePublished - Sep 1 2008

Fingerprint

astrophysics
Far UV Spectroscopic Explorer
interstellar matter
stellar envelopes
ion
planetary nebulae
negative ions
line of sight
ions
dust
atmospheres
stars
hydrogen
atmosphere
laboratory
calculation

Keywords

  • ISM: AbundancesISM: Atoms
  • ISM: Lines and bands
  • Planetary nebulae: General

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Ross, T., Baker, E. J., Snow, T. P., Destree, J. D., Rachford, B. L., Drosback, M. M., & Jensen, A. G. (2008). The search for H- in astrophysical environments. Astrophysical Journal, 684(1), 358-363. https://doi.org/10.1086/590242

The search for H- in astrophysical environments. / Ross, Teresa; Baker, Emily J.; Snow, Theodore P.; Destree, Joshua D.; Rachford, Brian L.; Drosback, Meredith M.; Jensen, Adam G.

In: Astrophysical Journal, Vol. 684, No. 1, 01.09.2008, p. 358-363.

Research output: Contribution to journalArticle

Ross, T, Baker, EJ, Snow, TP, Destree, JD, Rachford, BL, Drosback, MM & Jensen, AG 2008, 'The search for H- in astrophysical environments', Astrophysical Journal, vol. 684, no. 1, pp. 358-363. https://doi.org/10.1086/590242
Ross T, Baker EJ, Snow TP, Destree JD, Rachford BL, Drosback MM et al. The search for H- in astrophysical environments. Astrophysical Journal. 2008 Sep 1;684(1):358-363. https://doi.org/10.1086/590242
Ross, Teresa ; Baker, Emily J. ; Snow, Theodore P. ; Destree, Joshua D. ; Rachford, Brian L. ; Drosback, Meredith M. ; Jensen, Adam G. / The search for H- in astrophysical environments. In: Astrophysical Journal. 2008 ; Vol. 684, No. 1. pp. 358-363.
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