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Related papers: Star Formation in Dwarf Galaxies

200 papers

After summarizing the characteristics of different types of dwarf galaxies I briefly review our current state of knowledge of dwarf galaxy evolution in the Local Group, for which we now have a fairly detailed although by no means…

Astrophysics · Physics 2007-05-23 Eva K. Grebel

I review the evolutionary status of the field populations of starbursting dwarf galaxies and low surface brightness spirals. Particular attention is paid to the long standing problem of the progenitors for star burst galaxies, which may be…

Astrophysics · Physics 2007-05-23 Stacy S. McGaugh

Early-type dwarfs are the most common galaxy in the local universe, yet their origin and evolution remain a mystery. Various cosmological scenarios predict that dwarf-like galaxies in dense areas are the first to form and hence should be…

Astrophysics · Physics 2015-06-24 Christopher J. Conselice , John S. Gallagher , Rosemary F. G. Wyse

Galaxy counts from bright ultraviolet (UV) and deep optical spectroscopic surveys have revealed an unexpectedly large number of very blue galaxies. The colors and luminosities of these objects indicate that they are dwarf galaxies…

Astrophysics · Physics 2007-05-23 Michel Fioc , Brigitte Rocca-Volmerange

We investigate the nature of the star formation law at low gas surface densities using a sample of 19 low surface brightness (LSB) galaxies with existing HI maps in the literature, UV imaging from the Galaxy Evolution Explorer satellite,…

The GMRT observations of the HI 21~cm-line emission from 13~nearby dwarf star-forming galaxies are presented. The ranges of star formation rates and stellar masses of the sample galaxies are 0.03 -- 1.7~$M_\odot~{\rm yr}^{-1}$ and 0.04 --…

Astrophysics of Galaxies · Physics 2020-09-09 Sumit Jaiswal , Amitesh Omar

We describe studies of star formation in various galaxies using primarily observations from the Wise Observatory. In addition to surface photometry in the broad band UBVRI, we also use a set of narrow-band H-alpha filters tuned to different…

Astrophysics · Physics 2008-06-18 N. Brosch , E. Almoznino , O. Spector , A. Zitrin

The expected episodic or intermittent star formation histories (SFHs) of gas rich dwarf irregular galaxies (dIrrs) are the longstanding puzzles to understand their whole evolutional history. Solving this puzzle, we should grasp what…

Astrophysics · Physics 2009-11-10 Masakazu A. R. Kobayashi , Hideyuki Kamaya

We apply a simple, one-equation, galaxy formation model on top of the halos and subhalos of a high-resolution dark matter cosmological simulation to study how dwarf galaxies acquire their mass and, for better mass resolution, on over 10^5…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Gary A Mamon , Dylan Tweed , Andrea Cattaneo , Trinh Xuan Thuan

We present a measurement of the age distribution of stars residing in spiral disks and dwarf galaxies. We derive a complete star formation history of the ~140 Mpc^3 covered by the volume-limited sample of galaxies in the Advanced Camera for…

We present an analysis of star-formation and nuclear activity in galaxies as a function of both luminosity and environment in the SDSS DR4 dataset. Using a sample of 27753 galaxies at 0.005<z<0.037 that is >90% complete to Mr=-18.0 we find…

Astrophysics · Physics 2009-11-13 C. P. Haines , A. Gargiulo , F. La Barbera , A. Mercurio , P. Merluzzi , G. Busarello

We used the $H\alpha$ images from a large sample of nearby late-type dwarf galaxies to investigate properties of their emission structure. The sample consists of three hundred galaxies of the irregular (Irr), Magellanic irregular (Im), blue…

Astrophysics of Galaxies · Physics 2020-12-16 Karachentsev I. D. , Kaisin S. S

We present ultraviolet integrated and azimuthally-averaged surface photometric properties of a sample of 44 dIm, BCD, and Sm galaxies measured from archival NUV and FUV images obtained with GALEX. We compare the UV to Halpha and V-band…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Deidre A. Hunter , Bruce G. Elmegreen , Bonnie C. Ludka

We analyze the available observational data on the radial distribution of gas and young stellar populations in the disks of low surface brightness (LSB) galaxies and in the outer regions or the extended disks of normal brightness (HSB)…

Astrophysics of Galaxies · Physics 2025-02-25 Anatoly Zasov , Natalia Zaitseva , Anna Saburova

The formation and evolution of dwarf galaxies is relatively difficult to understand because of their faint emission in all regimes that require large aperture telescopes. We intend to study the evolution of star forming dwarf galaxies in…

Cosmology and Nongalactic Astrophysics · Physics 2011-08-31 O. Vaduvescu , C. Kehrig , J. M. Vilchez , E. Unda-Sanzana

Current models of galaxy evolution suggest that feedback from active galactic nuclei is needed to explain the high-luminosity cutoff in the galaxy luminosity function. Exactly how an AGN outflow couples with the ambient medium and…

Astrophysics · Physics 2009-11-13 G. M. Voit , K. W. Cavagnolo , M. Donahue , D. A. Rafferty , B. R. McNamara , P. E. J. Nulsen

We analyze new optical spectra of a sample of 502 galaxies in close pairs and n-tuples, separated by <= 50/h kpc. We extracted the sample objectively from the CfA2 redshift survey, without regard to the surroundings of the tight systems. We…

Astrophysics · Physics 2009-10-31 Elizabeth J. Barton , Margaret J. Geller , Scott J. Kenyon

We present the analysis of Halpha3, an Halpha imaging survey of 409 galaxies selected from the HI Arecibo ALFALFA Survey in the Local Supercluster, including the Virgo cluster. We explore the relations between the stellar mass, the HI mass…

We present deep H{\alpha} imaging of seven Hickson Compact Groups (HCGs) using the 4.1m Southern Astrophysics Research (SOAR) Telescope. The high spatial resolution of the observations allow us to study both the integrated star-formation…

Astrophysics of Galaxies · Physics 2015-05-08 Paul Eigenthaler , Sylvia Ploeckinger , Miguel Verdugo , Bodo Ziegler

HI in galaxies traces the fuel for future star formation and reveals the effects of feedback on neutral gas. Using a statistically uniform, HI-selected sample of 565 galaxies from the ALFALFA H-alpha survey, we explore HI properties as a…

Astrophysics of Galaxies · Physics 2015-08-06 A. E. Jaskot , M. S. Oey , J. J. Salzer , A. Van Sistine , E. F. Bell , M. P. Haynes