Results 261 to 270 of about 371,600 (284)

Unidentified Line in X-Ray Spectra of the Andromeda Galaxy and Perseus Galaxy Cluster [PDF]

Physical Review Letters, 2014
We report a weak line at 3.52±0.02  keV in x-ray spectra of the Andromeda galaxy and the Perseus galaxy cluster observed by the metal-oxide-silicon (MOS) and p-n (PN) CCD cameras of the XMM-Newton telescope.
Oleg Ruchayskiy
exaly   +2 more sources

Pegasus V/Andromeda XXXIV–a newly discovered ultrafaint dwarf galaxy on the outskirts of Andromeda [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2022
Michelle L M Collins, Walter Boschin
exaly   +2 more sources

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Methanol Masers in the Andromeda Galaxy

Proceedings of the International Astronomical Union, 2017
AbstractIs M31 going to collide with the Milky Way, or spiral around it? Determining the gravitational potential in the Local Group has been a challenge since it requires 3D space velocities and orbits of the members, and most objects have only had line-of-sight velocities measured. Compared to the less massive group members, the transverse velocity of
Loránt O. Sjouwerman, Ylva Pihlström
openaire   +2 more sources

The Andromeda Galaxy

Scientific American, 1981
1. Early History.- 2. Discovery of its Galaxian Nature.- 3. Modern History.- 4. Optical Structure.- 5. The Neutral Hydrogen Content.- 6. Radio Continuum Radiation.- 7. Rotation.- 8. Dynamics and Mass.- 9. Globular Clusters.- 10. OB Associations.- 11. Open Clusters.- 12. Dust.- 13. Variable Stars and Novae.- 14.
openaire   +3 more sources

Neutral Hydrogen Survey of Andromeda Galaxy [PDF]

Science, 1966
A neutral hydrogen survey of the Andromeda galaxy (M31) has been conducted with the 260-foot (80m) Ohio State University radio telescope. The neutral hydrogen is concentrated in the spiral arm regions, with but relatively small amounts near the center of the galaxy.
W. D. Brundage, John D. Kraus
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Radio Map of the Andromeda Galaxy

Science, 1964
The University of Illinois radio telescope has resolved the 610.5 Mcy/sec disk component of radio emission from the large galaxy M 31 into several discrete concentrations. In two cases, these correspond to the crossing of the optical major axis by spiral arms. A spur of emission extends southeast from the galaxy near the minor axis.
openaire   +3 more sources

October: The Andromeda Galaxy

2015
October is a great month for stargazing on a grand scale, for this month the Andromeda galaxy slides into prime position. This, our nearest major galaxy, is just waiting to be discovered and installed at number one in your list of favorite stargazing objects.
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The Wonder of the Andromeda Galaxy

2012
Who we are as humans is often dependent upon how we define our position in the universe. At the center of that definition since ancient times has been the Andromeda Galaxy. The astronomical story of the Andromeda Galaxy is not simply the tale of a celestial object, a specific tool such as the telescope, or of a particular science.
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Substructure and Tidal Streams in the Andromeda Galaxy and its Satellites

, 2016
Tidal streams from existing and destroyed satellite galaxies populate the outer regions of the Andromeda galaxy (M31). This inhomogeneous debris can be studied without of many of the obstacles that plague Milky Way research.
A. Ferguson, A. Mackey
semanticscholar   +1 more source

On the circular velocity in the andromeda galaxy

Astrophysics and Space Science, 1994
By analysing a sample of 158 globular clusters belonging to the galaxy M 31 or Andromeda Nebula (AN) in the framework of a spherically symmetric model with constant circular velocity a value of 260 ± 40 kms−1 for this quantity is obtained. It is also found that the number density of AN globulars roughly decreases as the cube of the distance to the ...
openaire   +2 more sources