Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions

  title={Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions},
  author={Vera C. Rubin and W. Kent Ford},
  journal={The Astrophysical Journal},
Spectia of sixty-seven H Ir regions from 3 to 24 kpc from the nucleus of M31 have been obtained with the DTM image-tube spectrograph at a dispersion of 135 A mm '. Radial velocities, principally from Ha, have been determined with an accuracy of 10 km sec ' for most regions. Rotational velocities have been calculated under the assumption of circular motions only. For the region interior to 3 kpc where no emission regions have been identified, a narrow [N 13] x6583 emission line is observed… 
Étude cinématique de la galaxie barrée NGC 5383
We present some observational results derived from plates taken with the nebular spectrograph at the 1.93-m telescope of the Observatoire de Haute Provence. The dispersion is 35 Å mm−1 and the
A Comparison of Dynamical Models of the Andromeda Nebula and the Galaxy
(1) From new radial velocities of 67 Hii regions in M 31, rotational velocities and a mass model of M 31 are derived, and compared with the rotation curve and Schmidt mass model of our galaxy. (2) It
Structural and Kinematic Properties of Populations of the Andromeda Galaxy
New observational data (Spinrad, 1970; Van den Bergh, 1970; Rubin and Ford, 1970) are used to determine structural and kinematic parameters of the nucleus, the subsystem of globular clusters, and
The Extended H I Rotation Curve and Mass Distribution of M31
New H I observations of Messier 31 (M31) obtained with the Effelsberg and Green Bank 100 m telescopes make it possible to measure the rotation curve of that galaxy out to ~35 kpc. Between 20 and 35
On the circular velocity in the andromeda galaxy
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 ±
Evidence for non-axisymmetry in M31 from wide-field kinematics of stars and gas
As the nearest large spiral galaxy, M31 provides a unique opportunity to learn about the structure and evolutionary history of this galaxy type in great detail. Among the many observing programs
The mass of the Andromeda galaxy
ABSTRA C T This paper argues that the Milky Way galaxy is probably the largest member of the Local Group. The evidence comes from estimates of the total mass of the Andromeda galaxy (M31) derived
The bar of the Andromeda galaxy revealed by integral field spectroscopy
The Andromeda galaxy M31 is the nearest large spiral galaxy to our own Milky Way and therefore gives us the unique opportunity to study this galaxy type in great detail. A longstanding question
Gas kinematics in M31
The systemic velocity of M31, rotation and expansion velocities as functions of galactocentric distance have been derived from all data available on the radial velocity field of the Andromeda galaxy.
Kinematics and stellar population properties of the Andromeda galaxy by using the spectroscopic observations of the Guoshoujing Telescope
The Andromeda galaxy was observed by the Guoshoujing Telescope (formerly named the Large Sky Area Multi-Object Fiber Spectroscopic Telescope — LAMOST), during the 2009 commissioning phase. Due to the


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