Results 161 to 170 of about 370,839 (289)

Observation of HI around three satellite galaxies of the M31 with the FAST: Andromeda II, NGC 205, and NGC 185 [PDF]

open access: yes
With the exceptional sensitivity of the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we conducted observations of the neutral hydrogen (HI) in the circumgalactic medium of Andromeda's (M31) satellite galaxies, specifically Andromeda II, NGC 205, and NGC 185.
arxiv   +1 more source

Satellites and stellar streams of the Andromeda Galaxy

open access: yes, 2020
One of the theories of galactic evolution is that large structures grow, hierarchically, from the merger and accretion of smaller ones. Evidence for this lies in the spectacular stellar streams observed around the Milky Way, Andromeda and other galaxies within and beyond the Local Group.
openaire   +3 more sources

HST Proper Motion of Andromeda III. Another Satellite Coorbiting the M31 Satellite Plane

open access: yesThe Astrophysical Journal
We measure the absolute proper motion of Andromeda III (And III) using Advanced Camera for Surveys/Wide Field Channel and WFPC2 exposures spanning an unprecedented 22 yr time baseline.
Dana I. Casetti-Dinescu   +7 more
doaj   +1 more source

Rocket ultraviolet imagery of the Andromeda galaxy

open access: yesThe Astrophysical Journal, 1978
Far-UV electrographic imagery of M31 is presented which was obtained during a sounding-rocket flight with an electrographic Schmidt camera sensitive in the wavelength range from 1230 to 2000 A. The resolution in the imagery is such that 50% of the energy from a point source is confined within a circle 40 arcsec in radius.
H. M. Heckathorn   +2 more
openaire   +2 more sources

The Molecular Clouds of M31

open access: yesThe Astrophysical Journal
Deep interferometric observations of CO and dust continuum emission are obtained with the Submillimeter Array at 230 GHz to investigate the physical nature of the giant molecular cloud (GMC) population in the Andromeda galaxy (M31).
Charles J. Lada   +3 more
doaj   +1 more source

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