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SUMMARY:Forming Blue Compact Dwarf Galaxy (BCD) through the Merger
DTSTART;VALUE=DATE-TIME:20230323T142400Z
DTEND;VALUE=DATE-TIME:20230323T142600Z
DTSTAMP;VALUE=DATE-TIME:20241114T092451Z
UID:indico-contribution-234@meetings.aip.de
DESCRIPTION:Speakers: Daya Nidhi Chhatkuli (Central Department of Physics\
 , Tribhuvan University)\nIt has long been speculated that Blue Compact Dwa
 rf galaxies (BCDs) are formed through the interaction between low-mass gas
 -rich galaxies\, but due to a lack of evidence\, this possibility has rare
 ly been explored. We study a sample of compact star-forming dwarf galaxies
  that are selected from a merging dwarf galaxy catalog. We present a detai
 led study of their spectroscopic and structural properties. We find that t
 hese BCDs looking galaxies host extended stellar shells and thus is confir
 med to be a dwarf-dwarf merger. Their stellar masses range between 8 × 10
 7 Mʘ and 2 × 109 Mʘ. Although the extended tail and shell are prominent
  in the deep optical images\, the overall major axis light profile is well
  modeled with a two-component Sersic function of inner compact and extende
 d outer radii. We calculate the inner and outer component stellar-mass rat
 io using the two-component modeling. We find an average of 4:1 (with a ran
 ge of 10:1 to 2:1) for our sample\, indicating that these galaxies might h
 ave suffered a satellite accretion which triggers the starburst in the cen
 ter of the host galaxies. From the measurement of Hα equivalent width\, w
 e derived the star-formation ages of these galaxies. The derived star-form
 ation ages of these galaxies turn out to be less than 100 Myr\, suggesting
  the recent ignition of star-formation due to events of satellite interact
 ion.\nKey words: galaxies: evolution-galaxies: irregular-galaxies: dwarf-g
 alaxies: starburst-galaxies: interactions.\n\nhttps://iaus379.aip.de/event
 /20/contributions/234/
LOCATION:Haus H\, Telegrafenberg
URL:https://iaus379.aip.de/event/20/contributions/234/
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