Search for and study of extremely metal-deficient galaxies

  title={Search for and study of extremely metal-deficient galaxies},
  author={Simon Pustilnik and A Y Kniazev and Alexander G. Pramskij and A. V. Ugryumov},
  journal={Astrophysics and Space Science},
We summarize the progress in identifying and observational study of extremely metal-deficient (XMD) gas-rich galaxies (BCGs, dIr and LSBDs). Due to volume limitation only the following issues are addressed: sample creation, some statistical data, Colour-Magnitude Diagrams (CMD) and ages, the case of SBS 0335–052 system, and probable evolution paths of various XMD objects. 

Very metal-poor galaxies: ionized gas kinematics in nine objects

The study of ionized gas morphology and kinematics in nine extremely metal-deficient (XMD) galaxies with the scanning Fabry-Perot interferometer on the Special Astrophysical Observatory (SAO) 6-m

HS 0837+4717 - a metal-deficient blue compact galaxy with large nitrogen excess

We present the results of high S/N long-slit spectroscopy with the Multiple Mirror and the SAO 6-m telescopes, optical imaging with the Wise 1-m telescope and H  observations with the Nancay Radio

Study of galaxies in the Lynx-Cancer void. II. Element abundances

In the framework of study of the evolutionary status of galaxies in the nearby Lynx-Cancer void, we present the results of the SAO RAS 6-m telescope spectroscopy for 20 objects in this region. The

H i in very metal‐poor galaxies: the SBS 0335–052 system

We present Giant Metrewave Radio Telescope (GMRT), H i 21cm observations of SBS 0335–052E and SBS 0335–052W, a close pair of dwarf galaxies, which are further unusual in being the most metal-poor

Andromeda IV: A new local volume very metal-poor galaxy

And IV is a low surface brightness (LSB) dwarf galaxy at a distance of 6.1 Mpc, projecting close to M 31. In this paper the results of spectroscopy of the And IV two brightest HII regions with the

The Hamburg/SAO survey for emission-line galaxies. VI. The sixth list of 126 galaxies

We present the fourth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies (HSS hereafter, SAO - Special Astrophysical Observatory, Russia). The list is a result of the follow-up

Using dust, gas and stellar mass-selected samples to probe dust sources and sinks in low-metallicity galaxies

We combine samples of nearby galaxies with Herschel photometry selected on their dust, metal, Hi, and stellar mass content, and compare these to chemical evolution models in order to discriminate

Study of DDO 68: nearest candidate young galaxy?

We present the results of optical spectroscopy and imaging with the SAO 6 m telescope for the dwarf galaxy DDO 68 (UGC 5340 = VV 542), falling into the region of very low density of luminous ($L >

Strong Emission Line H II Galaxies in the Sloan Digital Sky Survey. I. Catalog of DR1 Objects with Oxygen Abundances from Te Measurements

We present the first edition of the SDSS H II galaxies with Oxygen abundances Catalog (SHOC), which is a listing of strong emission-line galaxies (ELGs) from the Sloan Digital Sky Survey (SDSS).



The Hamburg/SAO Survey for low metallicity blue compact H II galaxies (HSS–LM) - I. The first list of 46 strong-lined galaxies

We present the description and the first resultsof a new project devoted to the search for extremely metal- deficient blue compact/H -galaxies (BCGs) and to the creation of a well selected large

Discovery of an Extremely Metal-Poor Galaxy: Optical Spectroscopy of UGCA 292

The results of optical spectroscopy of two H II regions in UGCA 292 (CVn I dwA) are presented. UGCA 292 is a nearby (D = 3.1 Mpc) gas-rich dwarf irregular galaxy (MH/LB ~ 6.9) that was first

SBSG 0335–052W: An Extremely Low Metallicity Dwarf Galaxy

We present Multiple Mirror Telescope and Keck II telescope spectrophotometry and 3.5 m Calar Alto telescope R, I photometry of the western component of the extremely low metallicity blue compact

Metal Abundances of KISS Galaxies. I. Coarse Metal Abundances and the Metallicity-Luminosity Relation

We derive metal abundance estimates for a large sample of starbursting emission-line galaxies (ELGs). Our sample is drawn from the KPNO International Spectroscopic Survey (KISS), which has discovered

Hubble Space Telescope/NICMOS Observations of I Zw 18: A Population of Old Asymptotic Giant Branch Stars Revealed

I present the first results from a Hubble Space Telescope/NICMOS imaging study of the most metal-poor blue compact dwarf galaxy, I Zw 18. The near-infrared color-magnitude diagram (CMD) is dominated

The Hamburg/SAO survey for emission-line galaxies. VI. The sixth list of 126 galaxies

We present the fourth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies (HSS hereafter, SAO - Special Astrophysical Observatory, Russia). The list is a result of the follow-up


▪ Abstract The Local Group dwarf galaxies offer a unique window to the detailed properties of the most common type of galaxy in the Universe. In this review, I update the census of Local Group dwarfs

H II Regions and Abundances in the “Dark Galaxy” DDO 154 and the Chemical Evolution of Dwarf Irregular Galaxies

We present Hα imaging and optical spectrophotometry of H II regions in the low surface brightness dwarf irregular galaxy DDO 154. The galaxy possesses a very small population of faint discrete H II

Hubble Space Telescope Observations of the Cometary Blue Compact Dwarf Galaxy UGC 4483: A Relatively Young Galaxy?

We present V and I photometry of the resolved stars in the cometary blue compact dwarf galaxy UGC 4483 using Hubble Space Telescope Wide Field Planetary Camera 2 images. The resulting I versus V-I

VLA H I Line Observations of the Extremely Metal-Poor Blue Compact Dwarf Galaxy SBS 0335−052

We present the results of H I mapping with the NRAO2 VLA of one of the most metal-deficient blue compact dwarf (BCD) galaxies known, SBS 0335-052, with an oxygen abundance only 1/40 that of the Sun.