Results 1 to 10 of about 1,223,055 (323)
Proper Motion of Pulsar B1800-21 [PDF]
The Astrophysical Journal, 2006 We report high angular resolution, multi-epoch radio observations of the young pulsar PSR B1800-21. Using two pairs of data sets, each pair spanning approximately a ten year period, we calculate the proper motion of the pulsar.
Brand J. +4 more
core +10 more sources
Position and Proper Motion of Sagittarius A* in the ICRF3 Frame from VLBI Absolute Astrometry [PDF]
The Astronomical Journal, 2023 Sagittarius A* (Sgr A*) is a strong, compact radio source believed to be powered by a supermassive black hole at the galactic center. Extinction by dust and gas in the galactic plane prevents observing it optically, but its position and proper motion ...
David Gordon +2 more
doaj +2 more sources
A new low proper motion catalogue of bright M-dwarfs [PDF]
EPJ Web of Conferences, 2013 We present a new catalogue of 1336 bright (K < 9), low proper motion, M dwarfs from the PPMXL catalogue. These M dwarfs cover the entire sky but the galactic plane was excluded to avoid crowding and reddened stars. Spectra taken of a random sample of the
Pinfield David, Frith James
doaj +2 more sources
The proper motion of Palomar 5 [PDF]
The Astrophysical Journal, 2015 Palomar 5 (Pal 5) is a faint halo globular cluster associated with narrow tidal tails. It is a useful system to understand the process of tidal dissolution, as well as to constrain the potential of the Milky Way.
Fritz, Tobias K., Kallivayalil, Nitya
core +2 more sources
Precision analysis of NGC 2158 with Gaia DR3 [PDF]
Scientific ReportsThis research uses the third edition of the Gaia Data Release (DR3) to re-investigate the open star cluster NGC 2158. We employed the pyUPMASK Python package and HDBSCAN algorithms to identify the cluster member stars. The key focus of this investigation
Nasser M. Ahmed, A. L. Tadross
doaj +2 more sources
Proper motion of Cygnus Loop shock filaments [PDF]
Serbian Astronomical Journal, 2023 We determined the shock speed in the Galactic supernova remnant Cygnus Loop, using the proper motion of its optical filaments and the latest estimate of its distance.
Vučetić M. +6 more
doaj +1 more source
Simulation of CSST’s astrometric capability
Frontiers in Astronomy and Space Sciences, 2023 Introduction: The China Space Station Telescope (CSST) will enter a low Earth orbit around 2024 and operate for 10 years, with seven of those years devoted to surveying the area of the median-to-high Galactic latitude and median-to-high Ecliptic latitude
Zhen-Sen Fu +12 more
doaj +1 more source
UrHip PROPER MOTION CATALOG [PDF]
The Astronomical Journal, 2015 11 pages, 5 figures, accepted for publication in ...
J. Frouard +4 more
openaire +2 more sources
Cannonball or Bowling Ball: Proper Motion and Parallax for PSR J0002+6216
The Astrophysical Journal, 2023 We report the results of careful astrometric measurements of the cannonball pulsar J0002+6216 carried out over 3 yr using the High Sensitivity Array. We significantly refine the proper motion to μ = 35.3 ± 0.6 mas yr ^−1 and place new constraints on the ...
S. Bruzewski +6 more
doaj +1 more source
Large-Scale Ejecta of Z CMa—Proper Motion Study and New Features Discovered
Galaxies, 2023 Z Canis Majoris is a fascinating early-type binary with a Herbig Be primary and a FU Orionis-type secondary. Both of the stars exhibit sub-arcsecond jet-like ejecta.
Tiina Liimets +4 more
doaj +1 more source