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arXiv:astro-ph/0011134 (astro-ph)
[Submitted on 7 Nov 2000]

Title:Damped Lyman-alpha absorption from a nearby Low Surface Brightness galaxy

Authors:D. V. Bowen, T. M. Tripp, E. B. Jenkins (Princeton Observatory)
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Abstract: Ground-based & HST images of the nearby galaxy SBS 1543+593 (z=0.009) show it to be a Low Surface Brightness (LSB) galaxy with a central surface brightness of mu_B(0)=23.2 mag/arcsec-2 and scale length 0.9 h-1 kpc, values typical for the local LSB galaxy population. The galaxy lies directly in front of the QSO HS 1543+5921 (z=0.807); an HST STIS spectrum of the quasar reveals a damped Lyman-alpha (DLA) line at the redshift of the interloper with an HI column density of log N(HI) = 20.35, as well as several low-ionization metal lines with strengths similar to those found in the Milky Way interstellar medium. Our data show that LSB galaxies are certainly able to produce the DLA lines seen at higher redshift, and fuels the speculation that LSB galaxies are a major contributor to that population of absorbers.
Comments: Submitted to AJ
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0011134
  (or arXiv:astro-ph/0011134v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0011134
Journal reference: AJ, 121, 1456 (2001)
Related DOI: https://doi.org/10.1086/319421

Submission history

From: David V. Bowen [view email]
[v1] Tue, 7 Nov 2000 01:29:39 UTC (587 KB)
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