Results 81 to 90 of about 399,477 (315)
The Astrophysical Journal Letters, 2023 Local low-metallicity dwarf galaxies are relics of the early universe and are thought to hold clues into the origins of supermassive black holes. While recent studies are uncovering a growing population of active galactic nuclei (AGNs) in dwarf galaxies,
Michael Reefe +13 more
doaj +1 more source
Constraining Star-Formation Driven Outflows in Local Dwarf Galaxies with Herschel
Physical Sciences Forum, 2023 Galactic feedback (i.e., outflows) plays a fundamental role in regulating galaxy formation and evolution. We investigate the physical properties of galactic outflows in a sample of 29 local low-metallicity dwarf galaxies drawn from the Dwarf Galaxy ...
Michael Romano
doaj +1 more source
The Herschel Dwarf Galaxy Survey - I. Properties of the low-metallicity ISM from PACS spectroscopy [PDF]
, 2015 Context. The far-infrared (FIR) lines are important tracers of the cooling and physical conditions of the interstellar medium (ISM) and are rapidly becoming workhorse diagnostics for galaxies throughout the universe.
D. Cormier +20 more
semanticscholar +1 more source
, 2010 Two 5 square degree regions around the NGC 7332/9 galaxy pair and the isolated galaxy NGC 1156 have been mapped in the 21-cm line of neutral hydrogen (HI) with the Arecibo L-band Feed Array out to a redshift of ~0.065$ (~20,000$ km/s) as part of the ...
Aldering +42 more
core +2 more sources
The cores of dwarf galaxy haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 We use N-body simulations to examine the effects of mass outflows on the density profiles of cold dark matter (CDM) halos surrounding dwarf galaxies. In particular, we investigate the consequences of supernova-driven winds that expel a large fraction of the baryonic component from a dwarf galaxy disk after a vigorous episode of star formation.
Julio F. Navarro +3 more
openaire +3 more sources
The unexpected diversity of dwarf galaxy rotation curves [PDF]
, 2015 We examine the circular velocity profiles of galaxies in A cold dark matter (CDM) cosmological hydrodynamical simulations from the EAGLE and LOCAL GROUPS projects and compare them with a compilation of observed rotation curves of galaxies spanning a wide
K. Oman +11 more
semanticscholar +1 more source
An Accreting Supermassive Black Hole Buried in a Faint Dwarf Galaxy
The Astrophysical Journal LettersIn the last decade, there have been several discoveries of active galactic nuclei (AGN) in dwarf galaxies including an AGN in an ultracompact dwarf galaxy with a black hole mass >10 ^6 M _⊙ .
Abhishek Paswan, Mousumi Das, K Rubinur
doaj +1 more source
Properties of the Dwarf Galaxy Population in Galaxy Clusters
, 2008 We present the observational properties of the dwarf galaxy population (Mr > M*+1) corresponding to one of the largest samples of spectroscopically confirmed galaxy cluster members reported in the literature. We have observed that red dwarf galaxies (u-r
Aguerri +26 more
core +1 more source
Astronomische Nachrichten, EarlyView.ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin +10 more
wiley +1 more source
Quantifying Bursty Star Formation in Dwarf Galaxies
The Open Journal of AstrophysicsDwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj +1 more source