Results 101 to 110 of about 386,306 (225)

Euclid: Early Release Observations – The extended stellar component of the IC10 dwarf galaxy★

Astronomy & Astrophysics
We present a detailed analysis of the old, extended stellar component of the Local Group dwarf galaxy IC 10 using deep resolved-star photometry in the VIS and NISP bands of the Euclid Early Release Observations.
Annibali F., Ferguson A. M. N., Sanchez-Alarcon P. M., Dimauro P., Hunt L. K., Pascale R., Bellazzini M., Lançon A., Jablonka P., Howell J. M., Voggel K., Cuillandre J.-C., Abdurro’uf, Battaglia G., BEDIN L. R., Cantiello M., Carollo D., Duc P.-A., Larsen S. S., Libralato M., Marleau F. R., Massari D., Saifollahi T., Tortora C., Urbano M., Gatto M., McDonald I., Baes M., Román J., Dalessandro E., Iodice E., Ragusa R., Pearson S., Andreon S., Auricchio N., Baccigalupi C., Baldi M., Balestra A., Bardelli S., Battaglia P., Biviano A., Branchini E., Brescia M., Camera S., Cañas-Herrera G., Capobianco V., Carbone C., Carretero J., Casas S., Castellano M., Castignani G., Cavuoti S., Cimatti A., Colodro-Conde C., Congedo G., Conselice C. J., Conversi L., Copin Y., Courbin F., Courtois H. M., Cropper M., Degaudenzi H., De Lucia G., Dole H., Dubath F., Duncan C. A. J., Dupac X., Escoffier S., Farina M., Farinelli R., Ferriol S., Finelli F., Frailis M., Franceschi E., Fumana M., Galeotta S., George K., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Haugan S. V. H., Hoekstra H., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Jahnke K., Jhabvala M., Keihänen E., Kermiche S., Kiessling A., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Laureijs R., Le Brun A. M. C., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marcin S., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R. J., Medinaceli E., Mei S., Melchior M., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moscardini L., Nakajima R., Neissner C., Niemi S.-M., Padilla C., Paltani S., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Pozzetti L., Raison F., Rebolo R., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Saglia R., Sakr Z., Sapone D., Sartoris B., Schirmer M., Schneider P., Secroun A., Seidel G., Serrano S., Simon P., Sirignano C., Sirri G., Stanco L., Steinwagner J., Tallada-Crespí P., Taylor A. N., Tereno I., Tessore N., Toft S., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valenziano L., Valiviita J., Vassallo T., Veropalumbo A., Wang Y., Weller J., Zamorani G., Zinchenko I. A., Zucca E., García-Bellido J., Martín-Fleitas J., Scottez V.   +177 more
doaj   +1 more source

Genuine Irregular Galaxies as a Relic of Building Blocks of Galaxies

, 2013
In order to understand nature of building blocks of galaxies in the early universe, we investigate "genuine irregular galaxies (GIGs)" in the nearby universe. Here, GIGs are defined as isolated galaxies without regular structures (spheroid, bulge, disk, bar, spiral arm, and nucleus). Using the results of two excellent studies on galaxy morphology based
Terao, K., Taniguchi, Y., Kajisawa, M., Shioya, Y., Kobayashi, M. A. R., Matsuoka, K., Ikeda, H., Murata, K. L., Ichikawa, A., Shimizu, M., Niida, M., Hamaguchi, E.   +11 more
openaire   +2 more sources

Nebular spectroscopy of dwarf irregular galaxies in nearby groups

, 2005
A number of dwarf irregular galaxies have been selected in the three most nearby groups of galaxies: the M81, Centaurus A, and Sculptor groups. The final objective is to establish whether there is a relationship between the luminosity and the ...
Riegerbauer, Regina
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Surface photometry of early-type galaxies in rich clusters [PDF]

, 1998
This thesis investigates the morphology of early-type galaxies in two rich clusters using 2D surface photometry. In particular, the amount of light in the 'disk' component is focussed upon, as the presence of a disk is the main morphological criterion in
Steel, James, Steel, J.
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Chemical evolution of irregular galaxies

, 1998
10 pages, 3 figs, uses moriond.sty. Review presented at XVIIIth Rencontre de Moriond `Dwarf Galaxies and Cosmology', eds.
openaire   +2 more sources

The star formation history of early-type galaxies in the fornax cluster [PDF]

, 1998
We have measured central line strengths and line-strength gradients for a complete sample of early-type galaxies in the Fornax cluster, comprising 11 elliptical and 11 lenticular galaxies, more luminous than M(_B) = -17.
Kuntschner, Harald, Kuntschner, H.
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Shape asymmetry : a morphological indicator for automatic detection of galaxies in the post-coalescence merger stages [PDF]

, 2016
MMP and VW acknowledge support from the European Career Reintegration Grant Phiz-Ev (P.I. VW). VW, KR and JM-A acknowledge support from the European Research Council Starting Grant SEDMorph (P.I. VW).
Wild, V., Rowlands, K., Walcher, C. J., Mendez Abreu, Jairo, Villforth, Carolin, Villforth, C., Mendez-Abreu, J., Johansson, P. H., Rowlands, Kate Elizabeth, Johansson, P.~H., Hewlett, T., Walcher, C.~J., Hewlett, Tim, Pawlik, Milena, Wild, Vivienne, Pawlik, M.~M., Pawlik, M. M., Villforth, C.; id_orcid, Wild, Vivienne; id_orcid   +18 more
core   +1 more source

The Perpendicularity of Dust Lanes and Radio Jets in Early-type Galaxies: Implications for Active Galactic Nuclei Feedback

The Astrophysical Journal
The orientation of radio jets relative to their host galaxies offers an interesting avenue for probing the connection between active galactic nuclei (AGN) and their surroundings.
Emma Jane Weller, Pieter van Dokkum
doaj   +1 more source

Evidence for Mass-dependent Evolution of Transitional Dwarf Galaxies in the Virgo Cluster

The Astrophysical Journal
The presence of transitional dwarf galaxies in cluster environments supports the hypothesis that infalling star-forming galaxies are transformed into quiescent early-type dwarf galaxies (ETdGs) through environmental effects.
Suk Kim, Soo-Chang Rey, Youngdae Lee
doaj   +1 more source

Testing Evolutionary Models of Dwarf Irregular Galaxies through Gas and Stellar Metallicity Determinations in HII Galaxies [PDF]

, 2017
Dwarf irregular galaxies are usually low-metallicity objects, and show ongoing or very recent star formation, giving rise to their irregular appearance.
Westera, Pieter, Cuisinier, François, Buser, Roland, Curty, Didier   +3 more
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