搜索结果: 1-15 共查到“恒星与银河系 Dwarf”相关记录19条 . 查询时间(0.062 秒)
New way to weigh a white dwarf:Use the Hubble Space Telescope
white dwarf Hubble Space Telescope
2017/7/21
Astronomers have used, for the first time, a novel method to determine the mass of a nearby dead star. The star is a "white dwarf," the shrunken corpse of a star like our sun after it has burned up it...
The Resolved Structure and Dynamics of an Isolated Dwarf Galaxy: A VLT and Keck Spectroscopic Survey of WLM
Resolved Structure Dynamics Isolated Dwarf Galaxy VLT Keck Spectroscopic Survey WLM
2012/2/23
We present spectroscopic data for 180 red giant branch stars in the isolated dwarf irregular galaxy WLM. Observations of the Calcium II triplet lines in spectra of RGB stars covering the entire galaxy...
A Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Early Star and Galaxy Formation
Relic Star Cluster the Sextans Dwarf Spheroidal Galaxy Implications Galaxy Formation
2012/2/23
We present tentative evidence for the existence of a dissolved star cluster in the Sextans dwarf spheroidal galaxy. In a sample of six stars, we identify three (possibly four) stars around [Fe/H] =-2....
The white dwarf cooling sequence of NGC 6791: a unique tool for stellar evolution
stars: white dwarfs – stars: luminosity function, mass function – (Galaxy:) open clusters and associations: general –(Galaxy:) open clusters and associations: individual: NGC 6791
2011/10/9
NGC 6791 is a well-studied, metal-rich open cluster that is so close to us that can be imaged down to luminosities fainter than that of the termination of its white dwarf cooling sequence, thus allowi...
The Cold Gas Content of Bulgeless Dwarf Galaxies
galaxies: dwarf– galaxies: evolution – galaxies: formation – methods:N-body simulations
2011/10/9
We present an analysis of the neutral hydrogen (HI) properties of a fully cosmological hydrodynamical dwarf galaxy, run with varying simulation parameters. As reported by Governato et al. (2010), the ...
Ever since supermassive black holes were found to lurk at the heart of most large galaxies, astronomers have wondered what came first: the galaxies or the black holes themselves? Now astronomers in th...
Bown dwarf and very low mass stars search in orion ob1a and ob1b asociations
low mass stars orion ob1a ob1b asociations
2009/6/25
Bown dwarf and very low mass stars search in orion ob1a and ob1b asociations。
The Structure of the Underlying Stellar Host in Blue Compact Dwarf Galaxies
Stellar Host Blue Compact Dwarf Galaxies
2009/6/18
The Structure of the Underlying Stellar Host in Blue Compact Dwarf Galaxies。
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。
Dwarf nova-like outburst of short-period intermediate Polar HT camelopardalis
Dwarf nova-like Polar HT camelopardalis
2009/6/17
Dwarf nova-like outburst of short-period intermediate Polar HT camelopardalis。
Understanding CV secondaries and the energetics of Dwarf novae outbursts via parallaxes
Dwarf novae outbursts via parallaxes
2009/6/17
Understanding CV secondaries and the energetics of Dwarf novae outbursts via parallaxes。
AA dor-an eclipsing subdwarf-brown dwarf binary
AA dor-an eclipsing subdwarf-brown dwarf binary
2009/6/17
AA dor-an eclipsing subdwarf-brown dwarf binary。
Population synthesis studies of white dwarf binaries
white dwarf binaries Population synthesis
2009/6/17
Population synthesis studies of white dwarf binaries。
Testing common envelope theories with white dwarf Binaries
white dwarf Binaries common envelope
2009/6/17
Testing common envelope theories with white dwarf Binaries。
A Search for Star Clusters in Dwarf Galaxies of the Local Group：dwarf Irregulars Sextans A and Sextans B
Star Clusters Local Group dwarf Irregulars Sextans
2009/6/10
A Search for Star Clusters in Dwarf Galaxies of the Local Group：dwarf Irregulars Sextans A and Sextans B。