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Segue 3: An Old, Extremely Low luminosity Star Cluster in the Milky Way's Halo
Extremely luminosity Star Cluster Milky Way
2011/10/10
We investigate the kinematic and photometric properties of the Segue 3 Milky Way companion using Keck/DEIMOS spectroscopy and Magellan/IMACS g and r-band imaging. Using maximum likelihood methods to a...
An extremely peculiar hot subdwarf with a ten-thousand-fold excess of zirconium, yttrium, and strontium
hot subdwarf ten-thousand-fold
2011/1/10
Helium-rich subdwarf B (He-sdB) stars represent a small group of low-mass hot stars with luminosities greater than those of conventional subdwarf B stars, and effective temperatures lower than those o...
The Stellar Abundances for Galactic Archaeology (SAGA) Database II - Implications for Mixing and Nucleosynthesis in Extremely Metal-Poor Stars and Chemical Enrichment of the Galaxy
The Stellar Abundances for Galactic Archaeology Database II
2011/1/13
We discuss the characteristics of known extremely metal-poor (EMP) stars in the Galaxy using the Stellar Abundances for Galactic Archaeology (SAGA) database (Suda et al. 2008, PASJ, 60, 1159).The anal...
Parallaxes of Southern Extremely Cool objects - I: Targets, Proper motions and first results
Parallaxes of Southern Extremely Cool objects Proper motions first results
2010/11/11
We present results from the PARallaxes of Southern Extremely Cool objects (PARSEC)program, an observational program begun in April 2007 to determine parallaxes for 122 L and 28 T southern hemisphere d...
Lyman `bump' galaxies - II. A possible signature of massive extremely metal-poor or metal-free stars in z=3.1 Ly-alpha emitters
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/29
Deep NB359 imaging with Subaru by Iwata et al. have detected surprisingly strong Lyman continuum (LyC; ~900A in the rest-frame) from some LAEs at z=3.1. However, the redshifts might be misidentified d...
Evolution and nucleosynthesis of extremely metal-poor and metal-free low- and intermediate-mass stars II. s-process nucleosynthesis during the core He flash
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
Models of primordial and hyper-metal-poor stars with masses similar to the Sun experience an ingestion of protons into the hot core during the core helium flash phase at the end of their red giant bra...
Extremely large and hot multilayer Keplerian disk around the O-type protostar W51N: The precursors of the HCHII regions?
Galaxy Astrophysics (astro-ph.GA)
2010/12/28
We present sensitive high angular resolution (0.57$''$-0.78$''$) SO, SO$_2$, CO, C$_2$H$_5$OH, HC$_3$N, and HCOCH$_2$OH line observations at millimeter and submillimeter wavelengths of the young O-typ...
Extremely Energetic 4B/X17.2 Flare and Associated Phenomena
Sun: Flares coronal mass ejections reconnection
2010/9/16
We observed 4B/X17.2 flare in Hα from super-active region NOAA 10486 at ARIES, Nainital. This is one of the largest flares of current solar cycle 23, which occurred near the Sun’s center and produced ...
New spectroscopic observations of dwarf nova BZ ursae Majoris with extremely unusual emission lines profiles
spectroscopic observations dwarf nova BZ ursae Majoris
2009/6/17
New spectroscopic observations of dwarf nova BZ ursae Majoris with extremely unusual emission lines profiles。
V1493 aql an extremely distant nova?
Near Ground Wind Simulations by a Meso-Scale Atmospherical Model for the Extremely Large Telescopes Site Selection
Wind Simulations Telescopes Site Selection Meso-Scale Atmospherical
2009/6/16
Near Ground Wind Simulations by a Meso-Scale Atmospherical Model for the Extremely Large Telescopes Site Selection。
Neutral hydrogen observations of the extremely metal-poor blue compact dwarf galaxy sbs 0335-052
Neutral hydrogen metal-poor blue compact dwarf galaxy sbs 0335-052
2009/6/11
Neutral hydrogen observations of the extremely metal-poor blue compact dwarf galaxy sbs 0335-052。
PN g135.9+55.9：a new, extremely oxygen-poor planetary nebula in the galactic halo
oxygen-poor planetary nebula galactic halo
2009/6/11
PN g135.9+55.9：a new, extremely oxygen-poor planetary nebula in the galactic halo。
Extremely Energetic 4B/X17.2 Flare and Associated Phenomena
Sun:Flares coronal mass ejections reconnection
2009/5/7
We observed 4B/X17.2 flare in Ha from super-active region NOAA 10486 at ARIES, Nainital. This is one of the largest flares of current solar cycle 23, which occurred near the Sun'™s center and pr...