Palomar/Las Campanas Imaging Atlas of Blue Compact Dwarf Galaxies. I. Images and Integrated Photometry

By A. Paz, B. Madore, O. P. N. E. Database, Jet propulsion Laboratory, Observatories of the Carnegie Institution of Washington. 2003

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We present B, R, and Hα images for a total of 114 nearby galaxies (vhelio < 4000 km s-1) 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 arcsec-2), and color at the peak surface brightness (μB,peak - μR,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 (LHα) = 40.0 ± 0.6 (ergs s-1). 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.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/1b622915127ce7187a3c398c7e1675d01c6fac75

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A GALEX ULTRAVIOLET IMAGING SURVEY OF GALAXIES IN THE LOCAL VOLUME (2010, background): “…of nearby dwarf star-forming galaxies, as low-metallicity, gas-rich, but not necessarily young systems (e.g.; Gallagher & Hunter 1984; van Zee 2000; Gil de Paz et al. 2003; Hunter & Elmegreen 2004), the vast majority of prior studies have relied on observations of representative samples of dwarfs.”
The applicability of far-infrared fine-structure lines as star formation rate tracers over wide ranges of metallicities and galaxy types (2014, background): “Total Hα fluxes are taken from Gil de Paz et al. (2003); Moustakas & Kennicutt (2006); Kennicutt et al. (2008); Östlin et al. (2009).”
Gas-to-dust mass ratios in local galaxies over a 2 dex metallicity range (2013, methodology): “However, we found two dwarf galaxies for which the ionised gas mass should be taken into account as it contributes equally or more than the atomic gas mass: Haro11 (MHII ∼ 1.2 × MHI, Cormier et al. 2012) and Pox186 (MHII ∼MHI, Gil de Paz et al. 2003).”
ISM properties in low-metallicity environments I. mid-infrared spectra of dwarf galaxies (2005, background): “The overlaping tails of the interacting galaxies could then be readily identified using the R band image of Gil de Paz et al. (2003).”
The GALEX Ultraviolet Atlas of Nearby Galaxies (2006, background): “For the blue compact dwarf galaxies NGC 1705, NGC 2537, NGC 3125, NGC 4344, and NGC 4861 (see Gil de Paz et al. 2003, Gil de Paz&Madore 2005), originally classified in RC3 as ellipticals or spirals, we changed their morphological type to compact irregulars (T ¼ 11).”
GRB hosts through cosmic time - VLT/X-Shooter emission-line spectroscopy of 96 γ-ray-burst-selected galaxies at 0.1 (2015, result): “Together with the low reddening, narrow line width, compact morphology and low luminosity (Levan et al. 2014b) it shares many similarities with Blue Compact Dwarfs (e.g., Gil de Paz et al. 2003, and references therein) or hosts of super-luminous supernovae (e.g., Leloudas et al. 2015).”
An Hα Imaging Survey of Galaxies in the Local 11 Mpc Volume (2004, background): “…& McCall 1999; (104) Estimated from Irwin et al. (2007) V mag assuming average B V = 0.4 from van Zee 2000; (105) Fingerhut et al. 2007; (106) Gil de Paz et al. 2003; (107) Huchtmeier et al. 2000; (108) Karachentseva & Karachentsev 1998; (109) Karachentsev et al. 2001; (110) KKH04; (111) LEDA;…”
CONFIRMATION OF FAINT DWARF GALAXIES IN THE M81 GROUP (2013, background): “Gil de Paz et al. (2003) have attempted to compile these into a single set of criteria.”