Oxygen Abundance and Stellar Populations in the Three Most Metal-Deficient Emission-Line Galaxies Known in the Local Universe: SBS 0335-052,E, SBS 0335-052 W and I Zw 18
نویسندگان
چکیده
منابع مشابه
2 00 8 Super Star Clusters in SBS 0335 - 052
As one of the lowest metallicity star forming galaxies, with a nucleus of several super star clusters, SBS0335-052E is the subject of substantial current study.
متن کاملSbs 0335–052w: the Lowest-metallicity Star-forming Galaxy Known
We present 4-meter Kitt Peak telescope and 6.5-meter MMT spectrophotometry of the extremely low-metallicity galaxy SBS 0335–052W, the western companion of the blue compact dwarf galaxy SBS 0335–052E. These observations have been combined with published 10-meter Keck data to derive for the brightest region of SBS 0335– 052W an oxygen abundance 12 + log O/H = 7.12 ± 0.03. This makes SBS 0335–052W...
متن کاملVLT / GIRAFFE spectroscopic observations of the metal - poor blue compact dwarf galaxy SBS 0335 – 052 E ⋆ ⋆ ⋆
Aims. We present two-dimensional spectroscopy of the extremely metal-deficient blue compact dwarf (BCD) galaxy SBS 0335–052E aiming to study physical conditions, element abundances and kinematical properties of the ionised gas in this galaxy. Methods. Observations were obtained in the spectral range λ3620 – 9400Å with the imaging spectrograph GIRAFFE installed on the UT2 of the Very Large Teles...
متن کاملThe Extraordinary Mid-infrared Spectrum of the Blue Compact Dwarf Galaxy Sbs 0335 052
SBS0335-052 is a blue compact dwarf galaxy (BCD) with one of the lowest known metallicities, Z∼Z⊙/41, making it a local example of how primordial starburst galaxies and their precursors might appear. A spectrum obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope clearly shows silicate absorption features, emission lines of [SIV] and [NeIII], and puts strong upper limits...
متن کاملHst Observations of the Blue Compact Dwarf Sbs 0335–052: a Probable Young Galaxy
We present HST WFPC2 V and I images and GHRS UV spectrophotometry of the spectral regions around Lyα and OI λ1302 of the extremely metal-deficient ( Z ∼ Z⊙/41 ) blue compact dwarf (BCD) galaxy SBS 0335–052. All the star formation in the BCD occurs in six superstar clusters (SSC) with ages ≤ 3-4 Myr. As there is no evident sign of tidal interaction, star formation in the BCD is probably triggere...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2006
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921306006910