SBS 0335-052W - an Extremely Low Metallicity Dwarf Galaxy
arXiv:astro-ph/9902368 · doi:10.1086/307335
Abstract
We present Multiple Mirror Telescope (MMT) and Keck II telescope spectrophotometry and 3.5m Calar Alto telescope R, I photometry of the western component of the extremely low-metallicity blue compact galaxy SBS 0335-052. The components, separated by 22 kpc, appear to be members of a unique, physically connected system. It is shown that SBS 0335-052W consists of at least three stellar clusters and has the same redshift as SBS 0335-052. The oxygen abundance in its two brightest knots is extremely low, 12+log(O/H)= 7.22+/-0.03 and 7.13+/-0.08, respectively. These values are lower than in SBS 0335-052 and are nearly the same as those in I Zw 18. The (R-I) color profiles are very blue in both galaxies due to the combined effects of ionized gas and a young stellar population emission. We argue that SBS 0335-052W is likely to be a nearby, young dwarf galaxy.
18 pages, 4 EPS figures, to appear in ApJ, 1 July 1999
References in corpus (3)
Cited by in corpus (26)
- New light on the search for low metallicity galaxies I. The N2 method
- Helium abundance in the most metal-deficient blue compact galaxies: I Zw 18 and SBS 0335-052
- High-Ionization Emission in Metal-Deficient Blue Compact Dwarf Galaxies
- Molecular depletion times and the CO-to-H2 conversion factor in metal-poor galaxies
- VLA HI Line Observations of the Extremely Metal-Poor Blue Compact Dwarf Galaxy SBS 0335-052
- Study of DDO 68: nearest candidate for a young galaxy?
- SBS 0335-052E+W: deep VLT/FORS+UVES spectroscopy of the pair of the lowest-metallicity blue compact dwarf galaxies
- Modeling the emission line sequence of H II galaxies
- The young age of the extremely metal-deficient blue compact dwarf galaxy SBS 1415+437
- SBS 0335-052W: The Lowest-Metallicity Star-Forming Galaxy Known
- Chandra Observations of the Three Most Metal-Deficient Blue Compact Dwarf Galaxies known in the Local Universe, SBS 0335-052, SBS 0335-052W, and I Zw 18
- Deep spectroscopy of the low-metallicity blue compact dwarf galaxy SBS 0335-052
- Multiple starbursts in Blue Compact Galaxies
- Abundances in the H I envelope of the extremely low-metallicity Blue Compact Dwarf Galaxy SBS 0335-052 from Far Ultraviolet Spectroscopic Explorer observations
- Deep VLT spectroscopy of the blue compact dwarf galaxies Tol 1214-277 and Tol 65
- SBS 0335-052 E and W: implications of new broad-band and H-alpha photometry
- Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman-alpha systems
- Abundance patterns in the low-metallicity emission-line galaxies from the Early Data Release of the Sloan Digital Sky Survey
- HI study of extremely metal-deficient dwarf galaxies. I. The Nancay Radio Telescope observations of twenty-two objects
- Starburst in HS 0822+3542 induced by the very blue LSB dwarf SAO 0822+3545
- A Stellar Population Gradient in VII Zw 403 - Implications for the Formation of Blue Compact Dwarf Galaxies
- The Hamburg/SAO survey for low metallicity blue compact/HII-galaxies (HSS-LM). I. The first list of 46 strong-lined galaxies
- Chemical Evolution of Dwarf Irregular and Blue Compact Galaxies
- HS 2134+0400 - new very metal-poor galaxy, a representative of void population?
- Search for and study of extremely metal-deficient galaxies
- HI Observations of SA 68-6597: the faintest Blue Compact Dwarf Galaxy