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We present the results of high spatial resolution HI observations of five intrinsically compact dwarf galaxies which are currently experiencing a strong burst of star formation. The HI maps indicate that these systems have a complex and…

天体物理学 · 物理学 2009-10-30 L. van Zee , E. D. Skillman , J. J. Salzer

Blue compact dwarf galaxies (BCDs) form stars at, for their sizes, extraordinarily high rates. In this paper, we study what triggers this starburst and what is the fate of the galaxy once its gas fuel is exhausted. We select four BCDs with…

星系天体物理 · 物理学 2015-06-19 M. Koleva , S. De Rijcke , W. W. Zeilinger , R. Verbeke , J. Schroyen , L Vermeylen

We investigate the star-formation history of gas-rich dwarf galaxies, taking account of the dynamical evolution of their neutral hydrogen (H{\sc i}) envelope. Gas-rich dwarfs are classified into blue compact dwarfs (BCDs) and dwarf…

天体物理学 · 物理学 2009-11-07 Yuka Y. Tajiri , Hideyuki Kamaya

Dwarf galaxies play an important role in our understanding of galaxy formation and evolution, and starbursts are believed to strongly affect their structure and evolution. Here we present a study of 12 of the nearest dwarf galaxies thought…

天体物理学 · 物理学 2009-10-31 Amanda T. Marlowe , Gerhardt R. Meurer , Timothy M. Heckman

In this paper, we report our studies on the gaseous and chemical properties of a relatively large sample (53 members) of blue compact dwarf galaxies (BCDs). The results of correlations among the oxygen abundance, stellar mass, gas mass,…

宇宙学与河外天体物理 · 物理学 2013-01-28 Yinghe Zhao , Yu Gao , Qiusheng Gu

We present and analyse the photometric properties of a nearly complete sample of blue compact dwarf (BCD) and irregular galaxies in the Virgo cluster from multi-band SDSS images. Our study intends to shed light on the ongoing debate of…

星系天体物理 · 物理学 2015-06-17 Hagen T. Meyer , Thorsten Lisker , Joachim Janz , Polychronis Papaderos

The nature of possible evolutionary pathways between various types of dwarf galaxies is still not fully understood. Blue compact dwarf galaxies (BCDs) provide a unique window into dwarf galaxy formation and evolution and are often thought…

星系天体物理 · 物理学 2014-10-28 Steven Janowiecki , John J. Salzer

We discuss and test possible evolutionary connections between Blue Compact Dwarf galaxies (BCDs) and other types of dwarf galaxies. BCDs provide ideal laboratories to study intense star formation episodes in low mass dwarf galaxies, and…

星系天体物理 · 物理学 2017-02-22 Steven Janowiecki , John J. Salzer , Liese van Zee , Jessica L. Rosenberg , Evan Skillman

Blue Compact Dwarf (BCD) galaxies are metal poor systems going through a major starburst that cannot last for long. We have identified galaxies which may be BCDs during quiescence (QBCD), i.e., before the characteristic starburst sets in or…

We measure the apparent shapes for a sample of 62 blue compact dwarf galaxies (BCDs), and compare them with the apparent shapes for a sample of 80 dwarf elliptical galaxies (dEs). The BCDs are flatter, on average, than the dEs, but the…

天体物理学 · 物理学 2009-10-30 Eon-Chang Sung , Cheongho Han , Barbara , S. Ryden , Mun-Suk Chun , Ho-Il Kim

The origin of the observed steep rotation curves of blue compact dwarf galaxies (BCDs) remains largely unexplained by theoretical models of BCD formation. We therefore investigate the rotation curves in BCDs formed from mergers between…

星系天体物理 · 物理学 2016-09-14 A. Watts , K. Bekki

It has long been speculated that Blue Compact Dwarf galaxies (BCDs) are formed through the interaction between low-mass gas-rich galaxies, but a few candidates of such systems have been studied in detail. We study a sample of compact…

星系天体物理 · 物理学 2022-12-15 Daya Nidhi Chhatkuli , Sanjaya Paudel , Rajesh Kumar Bachchan , Binil Aryal , Jaewon Yoo

For a rotating galaxy, the inner circular-velocity gradient d_{R}V(0) provides a direct estimate of the central dynamical mass density, including gas, stars, and dark matter. We consider 60 low-mass galaxies with high-quality HI and/or…

星系天体物理 · 物理学 2014-03-05 Federico Lelli , Filippo Fraternali , Marc Verheijen

The H$\alpha$ velocity fields of a sample of six luminous blue compact galaxies (BCGs) and two companions have been obtained by observations with a scanning Fabry-Perot interferometer. The Fabry-Perot images, velocity fields and rotations…

天体物理学 · 物理学 2016-08-30 G. Ostlin , P. Amram , N. Bergvall , J. Masegosa , J. Boulesteix , I. Marquez

We investigate the structural properties of the underlying hosts of 34 blue compact dwarf (BCD) galaxies with deep near-infrared (NIR) photometry. The BCD sample is selected from the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey…

星系天体物理 · 物理学 2016-01-06 Jianhui Lian , Xu Kong , Ning Jiang , Wei Yan , Yulong Gao

Optical and HI imaging of both dwarf irregular (dI) and Blue Compact Dwarf (BCD) galaxies reveal important clues on how dwarf galaxies evolve and their star formation is regulated. Both usually show evidence for stellar and gaseous disks.…

天体物理学 · 物理学 2007-05-23 G. R. Meurer

We present oxygen abundance measurements for 74 blue compact dwarf (BCD) galaxies in the redshift range in [0.2, 0.5] using the strong-line method. The spectra of these objects are taken using Hectospec on the Multiple Mirror Telescope…

星系天体物理 · 物理学 2016-03-16 Jianhui Lian , Ning Hu , Guanwen Fang , Chengyun Ye , Xu Kong

Dwarf irregular and blue compact galaxies are very interesting objects since they are relatively simple and unevolved. We present new models for the chemical evolution of these galaxies by assuming different regimes of star formation…

宇宙学与河外天体物理 · 物理学 2015-05-27 Jun Yin , Francesca Matteucci , Giovanni Vladilo

Recent studies of the near-infrared (NIR) properties of dwarf irregular galaxies (dIs) and blue compact dwarfs (BCDs) have provided improved estimates for the NIR luminosity of old stellar populations in these galaxies. These can be used to…

天体物理学 · 物理学 2009-06-23 O. Vaduvescu , M. L. McCall , M. G. Richer

The search for chemically unevolved galaxies remains prevalent in the nearby Universe, mostly because these systems provide excellent proxies for exploring in detail the physics of high-z systems. The most promising candidates are extremely…

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