Results 11 to 20 of about 51,041 (245)
Formation of blue compact dwarf galaxies from merging and interacting gas-rich dwarfs [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2008 Abstract We present the results of numerical simulations which show the formation of blue compact dwarf (BCD) galaxies from merging between very gas-rich dwarfs with extended H i gas discs. We show that dwarf–dwarf merging can trigger central starbursts and form massive compact cores dominated by young stellar populations.
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HI-observations of blue compact dwarf galaxies [PDF]
Astronomy & Astrophysics, 2005 We present HI-observations of 56 blue compact dwarf (BCD) galaxies of which 44 have been detected in the 21-cm line from neutral hydrogen with the 100-m radiotelescope at Effelsberg. Optical data (e.g., from NED) and HI data from other observers and telescopes are used to estimate the likelihood of confusion from other galaxies within the Effelsberg ...
A. R. Petrosian +3 more
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Infrared Properties of Star-forming Dwarf Galaxies. II. Blue Compact Dwarf Galaxies in the Virgo Cluster [PDF]
The Astronomical Journal, 2006 Accepted in ...
Michael G. Richer +2 more
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The Blue Compact Dwarf Galaxy VCC 848 Formed by Dwarf–Dwarf Merging [PDF]
The Astrophysical Journal Letters, 2020 Abstract It has long been speculated that many starburst or compact dwarf galaxies are resulted from dwarf–dwarf galaxy merging, but unequivocal evidence for this possibility has rarely been reported in the literature. We present the first study of deep optical broadband images of a gas-dominated blue compact dwarf galaxy (BCD) VCC 848 ...
Zhang, Hong-Xin +10 more
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ULAS J141623.94+134836.3: A BLUE T DWARF COMPANION TO A BLUE L DWARF [PDF]
The Astronomical Journal, 2010 We confirm the substellar nature of ULAS J141623.94+134836.3, a common proper motion companion to the blue L dwarf SDSS J141624.08+134826.7 identified by Burningham et al. and Scholz. Low-resolution 0.8-2.4 micron spectroscopy obtained with IRTF/SpeX shows strong H2O and CH4 absorption bands, consistent with a T7.5 spectral type, and we see possible ...
Dagny L. Looper +3 more
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Uncovering blue diffuse dwarf galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Extremely metal poor (XMP) galaxies are known to be very rare, despite the large numbers of low-mass galaxies predicted by the local galaxy luminosity function. This paper presents a sub-sample of galaxies that were selected via a morphology-based search on SDSS images with the aim of finding these elusive XMP galaxies. By using the recently discovered
B. L. James +5 more
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Dwarf planet (1) Ceres surface bluing due to high porosity resulting from sublimation
Nature Communications, 2021 The origin of blue ejecta around the fresh craters of dwarf planet Ceres is unknown. Here, the authors show that the blue color results from high porosity of the surface, induced by sublimation of ice-phyllosilicate mixture produced by impacts.
Stefan E. Schröder +8 more
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Calculation of optimization photoionized models of HII region in blue compact dwarf galaxy 1358+576 [PDF]
Вісник Астрономічної школи, 2001 B. Ya. Melekh
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A blue depression in the optical spectra of M dwarfs
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT A blue depression is found in the spectra of M dwarfs from 4000 to 4500 Å. This depression shows an increase towards lower temperatures, though it is particularly sensitive to gravity and metallicity. It is the single strongest and most sensitive feature in the optical spectra of M dwarfs.
Hugh R A Jones +5 more
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Blue diffuse dwarf galaxies: a clearer picture [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 The search for chemically unevolved galaxies remains prevalent in the nearby Universe, mostly because these systems provide excellent proxies for exploring in detail the physics of high-z systems. The most promising candidates are extremely metal-poor galaxies (XMPs), i.e., galaxies with <1/10 solar metallicity.
Bethan L. James +6 more
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