Infrared Properties of Star Forming Dwarf Galaxies: Blue Compact Dwarfs in the Virgo Cluster

Abstract

A sample of 16 blue compact dwarf galaxies (BCDs) in the Virgo Cluster has been imaged in the near-infrared (NIR) in $J$ and $K_s$ on the 2.1m telescope at OAN-SPM in Mexico. Isophotes as faint as ${\mu }_J$ = 24 mag arcsec${}^{-2}$ and ${\mu }_{K_s}$ = 23 mag arcsec${}^{-2}$ have been reached in most of the targets. Surface brightness profiles can be fitted across the whole range of radii by the sum of two components: a hyperbolic secant (sech) function, which is known to fit the light profiles of dIs, and a Gaussian component, which quantifies the starburst near the centre. Isophotal and total fitted NIR magnitudes have been calculated, along with semimajor axes at ${\mu }_J$ = 23 mag arcsec${}^{-2}$ and ${\mu }_{K_s}$ = 22 mag arcsec${}^{-2}$. The diffuse underlying component and the young starburst have been quantified using the profile fitting. Most color profiles show a constant color, between $J-K_s$=0.7 to 0.9 mag. The diffuse component represents the overwhelming majority of the NIR light for most BCDs, the starburst enhancing the flux by less than about 0.3 mag. Linear correlations were found between the sech scale length and the sech magnitude, and between the sech semimajor axis and the sech magnitude. Overall, galaxies with more luminous diffuse components are larger and brighter in the centre. The central burst correlates with the diffuse component, with brighter BCDs having stronger star-bursts, suggesting that more massive objects are forming stars more efficiently. BCDs lie on the ``fundamental plane'' defined by dwarf irregulars (dISs) in Paper I, following the same relation between sech absolute magnitude, sech central surface brightness, and the hydrogen line-width $W_{20}$, although the scatter is larger than for the dIs. [one sentence cut]

arXiv commentAccepted in AJ

References in corpus (15)

• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Heavy element abundances in blue compact galaxies
• The most metal-poor galaxies
• Introducing GOLDMine: A new Galaxy Database on the WEB
• Palomar/Las Campanas Imaging Atlas of Blue Compact Dwarf galaxies: I. Images and integrated photometry
• The Resolved Stellar Population of the Post-Starburst Galaxy NGC 1569
• The blue compact dwarf galaxy I Zw 18: a comparative study of its low-surface-brightness component
• New insights to the photometric structure of Blue Compact Dwarf Galaxies from deep Near-Infrared studies I. Observations, surface photometry and decomposition of surface brightness profiles
• Deep Near Infrared Mapping of Young and Old Stars in Blue Compact Dwarf Galaxies
• Uncovering Additional Clues to Galaxy Evolution. II. The Environmental Impact of the Virgo Cluster on the Evolution of Dwarf Irregular Galaxies
• Infrared Properties of Star Forming Dwarf Galaxies: I. Dwarf Irregular Galaxies in the Local Volume
• Spectroscopy of Dwarf HII Galaxies in the Virgo Cluster. I. Data, Chemical Abundances and Ionization Structure
• The red stellar population in NGC 1569
• New insights to the photometric structure of Blue Compact Dwarf Galaxies from deep Near-Infrared studies: II. The sample of northern BCDs
• Strategies for Imaging Faint Extended Sources in the Near-Infrared

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