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Accretion phenomena in nearby star-forming dwarf galaxies

Published online by Cambridge University Press:  21 March 2017

F. Annibali ,
M. Tosi ,
A. Aloisi ,
M. Bellazzini ,
A. Buzzoni ,
M. Cignoni ,
L. Ciotti ,
F. Cusano ,
C. Nipoti  and
E. Sacchi
...Show all authors
F. Annibali
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected] Dipartimento di Fisica e Astronomia, Università di Bologna viale Berti-Pichat 6/2, 40127 Bologna, Italy
M. Tosi
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected]
A. Aloisi
Affiliation:
Space Telescope Science Institute 3700 San Martin Drive, Baltimore, MD 21218, USA
M. Bellazzini
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected]
A. Buzzoni
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected]
M. Cignoni
Affiliation:
Space Telescope Science Institute 3700 San Martin Drive, Baltimore, MD 21218, USA Dipartimento di Fisica, Università di Pisa Largo Bruno Pontecorvo, 3, 56127 Pisa, Italy
L. Ciotti
Affiliation:
Dipartimento di Fisica e Astronomia, Università di Bologna viale Berti-Pichat 6/2, 40127 Bologna, Italy
F. Cusano
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected]
C. Nipoti
Affiliation:
Dipartimento di Fisica e Astronomia, Università di Bologna viale Berti-Pichat 6/2, 40127 Bologna, Italy
E. Sacchi
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected] Dipartimento di Fisica e Astronomia, Università di Bologna viale Berti-Pichat 6/2, 40127 Bologna, Italy
D. Paris
Affiliation:
INAF-Osservatorio Astronomico di Roma Via Frascati 33, 00078, Monte Porzio Catone, Italy
D. Romano
Affiliation:
INAF-Osservatorio Astronomico di Bologna Via Ranzani 1, I-40127 Bologna, Italy email: [email protected]
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Abstract

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We present two pilot studies for the search and characterization of accretion events in star-forming dwarf galaxies. Our strategy consists of two complementary approaches: i) the direct search for stellar substructures around dwarf galaxies through deep wide-field imaging, and ii) the characterization of the chemical properties in these systems up to large galacto-centric distances. We show our results for two star-forming dwarf galaxies, the starburst irregular NGC 4449, and the extremely metal-poor dwarf DDO 68.

Keywords

galaxies: individual (NGC 4449DDO 68)galaxies: dwarfgalaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 211 - 213
Copyright
Copyright © International Astronomical Union 2017 

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