SIMBAD references

2003ApJS..147...29G - Astrophys. J., Suppl. Ser., 147, 29-59 (2003/July-0)

Palomar/Las Campanas imaging atlas of blue compact dwarf galaxies. I. Images and integrated photometry.


Abstract (from CDS):

We present B, R, and Hα images for a total of 114 nearby galaxies (vhelio<4000 km/s) that, with exception of nine objects, are classified as blue compact dwarfs (BCDs). BR integrated magnitudes, Hα fluxes and Hα equivalent widths for all the objects in the sample are presented. A new set of quantitative, observational criteria for a galaxy to be classified as a BCD is proposed. These criteria include a limit on the K-band luminosity (i.e., stellar mass; MK>-21 mag), peak surface brightness (µB,peak<22 mag/arcsec2), and color at the peak surface brightness (µB,peakR,peak≲1). Hα emission is detected in all but three sample galaxies. Typical color, absolute magnitude, and Hα luminosity are (B-R)=0.7±0.3 mag, MB=-16.1±1.4 mag, and log (L)=40.0±0.6 (ergs/s). Galaxies morphologically classified as nE and iE BCDs within our sample show lower Hα equivalent widths and redder colors, on average, than the iI- and i0-type BCDs. For most of the galaxies the presence of an evolved stellar population is required to explain their observed properties; only the most metal-poor BCDs (e.g., I Zw 18, Tol 65) are still compatible with a pure, young burst. The flux-calibrated and WCS-compliant images in this Atlas are individually available through the NASA/IPAC Extragalactic Database (NED) image server and collectively through a dedicated Web page.

Abstract Copyright:

Journal keyword(s): Atlases - Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Fundamental Parameters - Galaxies: Photometry - Galaxies: Starburst

VizieR on-line data: <Available at CDS (J/ApJS/147/29): table1.dat table3.dat table5.dat>

Errata: erratum vol. 156, p. 361 (2005) - erratum vol. 157, p. 410 (2005)

Simbad objects: 119

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