Ultraviolet Interstellar Absorption Lines toward the Starburst Dwarf Galaxy NGC 1705

摘要

Archival Goddard High Resolution Spectrograph (GHRS) low-resolution spectra of NGC 1705, with wavelength ranges of 1170.31461.7 A deg and 1453.51740.1 A deg and a velocity resolution of ～120 kms~-1, have been used to derive the velocity structure and equivalent widths of the absorption lines of Si II λ1190.42, λ1260.42, λ1304.37, and λ1526.71, S II λ1253, Al II λ1670.79, and Fe II λ1608.45 in this sight line. Three relatively narrow absorption components are seen at LSR velocities of -20 kms~-1, 260 kms~-1, and 540 kms~-1.