Other formats:
BibTeX
LaTeX
RIS
@article{2427017,
author = {Kouroumpatzakis, K. and Svoboda, J. and Zezas, A. and Borkar, A. and Kyritsis, E. and Boorman, P. G. and Daoutis, C. and Adamcova, B. and Grossová, Romana},
article_number = {August 2024},
doi = {http://dx.doi.org/10.1051/0004-6361/202449766},
keywords = {galaxies: dwarf; galaxies: general; galaxies: ISM; galaxies: starburst; galaxies: star formation; galaxies: stellar content},
language = {eng},
issn = {0004-6361},
journal = {Astronomy and Astrophysics},
title = {Blueberry galaxies up to 200 Mpc and their optical and infrared properties},
url = {https://www.aanda.org/articles/aa/full_html/2024/08/aa49766-24/aa49766-24.html},
volume = {688},
year = {2024}
}
TY - JOUR
ID - 2427017
AU - Kouroumpatzakis, K. - Svoboda, J. - Zezas, A. - Borkar, A. - Kyritsis, E. - Boorman, P. G. - Daoutis, C. - Adamcova, B. - Grossová, Romana
PY - 2024
TI - Blueberry galaxies up to 200 Mpc and their optical and infrared properties
JF - Astronomy and Astrophysics
VL - 688
IS - August 2024
SP - 1-18
EP - 1-18
PB - EDP Sciences
SN - 00046361
KW - galaxies: dwarf
KW - galaxies: general
KW - galaxies: ISM
KW - galaxies: starburst
KW - galaxies: star formation
KW - galaxies: stellar content
UR - https://www.aanda.org/articles/aa/full_html/2024/08/aa49766-24/aa49766-24.html
N2 - Context. Dwarf highly star-forming galaxies (SFGs) dominated the early Universe and are considered the main driver of its reionization. However, direct observations of these distant galaxies are mainly confined to rest-frame ultraviolet and visible light, limiting our understanding of their complete properties. Therefore, it is still paramount to study their local analogs, the green pea (GP) and blueberry (BB) galaxies. Aims. This work aims to expand our knowledge of BBs by identifying a new sample that is closer and in the southern sky. Methods. In addition to the already known BBs, this new sample will allow for a statistically significant study of their properties probed by visible and infrared (IR) light. By utilizing the HECATE catalog, which provides optical and IR photometry and characterization of galaxies, along with data from Pan-STARSS and SDSS, this study selects and analyzes a new sample of BBs. We employed spectral energy distribution fitting to derive homogeneous measurements of star-formation rates and stellar masses. Additionally, we measured emission-line fluxes, including He II λ4686, through spectral fitting. Results. Through this work, we identified 48 BBs, of which 40 were first recognized as such, with the nearest at 19 Mpc. Fourteen of the BBs are in the south sky. The BBs tend to be extremely IR red in both WISE W1 – W2 and W2 – W3 colors, distinguishing them from typical SFGs. Dwarf SFGs with higher specific star-formation rates tend to have redder IR colors. Conclusions. Blueberry galaxies stand out as the most intensely star-forming sources in the local Universe among dwarf galaxies. They are intrinsically bluer in visible light, redder in the infrared, and less massive. They also have higher specific star-formation rates, equivalent widths, lower metallicities, and the most strongly ionized interstellar medium compared to typical SFGs and GPs.
ER -
KOUROUMPATZAKIS, K., J. SVOBODA, A. ZEZAS, A. BORKAR, E. KYRITSIS, P. G. BOORMAN, C. DAOUTIS, B. ADAMCOVA and Romana GROSSOVÁ. Blueberry galaxies up to 200 Mpc and their optical and infrared properties. \textit{Astronomy and Astrophysics}. EDP Sciences, 2024, vol.~688, August 2024, p.~1-18. ISSN~0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/202449766.
|
