Results 11 to 20 of about 7,749 (214)
Evidence for a Massive Andromeda Galaxy Using Satellite Galaxy Proper Motions
The Astrophysical Journal, 2023 We present new mass estimates for Andromeda (M31) using the orbital angular momenta of four satellite galaxies (M33, NGC 185, NGC 147, and IC 10) derived from existing proper motions, distances, and line-of-sight velocities. We infer two masses for M31: $
Ekta Patel, Kaisey S. Mandel
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Newly Discovered Wolf–Rayet Stars in M31
The Astronomical Journal, 2023 The evolved massive star populations of the Local Group galaxies are generally thought to be well understood. However, recent work has suggested that the Wolf–Rayet (WR) content of M31 may have been underestimated.
Kathryn F. Neugent, Philip Massey
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Sports, 2021 This study aimed to examine the effects of change of direction (COD) speed and technique modification training on 180° turning performance (completion time, ground contact time [GCT], and exit velocity), kinetics, and kinematics.
Thomas Dos’Santos +4 more
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Planetary Nebula Kinematics in M31 [PDF]
The Astrophysical Journal, 2004 accepted to ApJ; main body of paper is 36 pages, including 14 ...
Hurley-Keller, Denise +3 more
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M31* and its circumnuclear environment [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 Submitted to MNRAS, 33 pages, 9 figures.
Li, Z, Wang, QD, Wakker, BP
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The Chemodynamics of the Stellar Populations in M31 from APOGEE Integrated-light Spectroscopy
The Astrophysical Journal, 2023 We present an analysis of nearly 1000 near-infrared, integrated-light spectra from APOGEE in the inner ∼7 kpc of M31. We utilize full-spectrum fitting with A-LIST simple stellar population spectral templates that represent a population of stars with the ...
Benjamin J. Gibson +10 more
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Microlensing towards LMC and M31 [PDF]
Proceedings of the International Astronomical Union, 2004 The nature and the location of the lenses discovered in the microlensing surveys done so far towards the LMC remain unclear. Motivated by these questions we computed the optical depth for the different intervening populations and the number of expected events for self-lensing, using a recently drawn coherent picture of the geometrical structure and ...
jetzer, Ph. +2 more
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Searching for Radio Outflows from M31* with VLBI Observations
The Astrophysical Journal, 2023 As one of the nearest and most dormant supermassive black holes (SMBHs), M31* provides a rare but promising opportunity for studying the physics of black hole accretion and feedback at the quiescent state. Previous Karl G.
Sijia Peng +5 more
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Monthly Notices of the Royal Astronomical Society, 2002 Recent work by several groups has established the properties of the dwarf satellites to M31. We reexamine the reported kinematics of this group employing a fresh technique we have developed previously. By calculating the distribution of a chi statistic (which we define in the paper) for the M31 system, we conclude that the total mass (disk plus halo ...
Gottesman, S. T. +2 more
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THE WOLF-RAYET CONTENT OF M31 [PDF]
The Astrophysical Journal, 2012 Wolf-Rayet stars are evolved massive stars, and the relative number of WC-type and WN-type WRs should vary with the metallicity of the host galaxy, providing a sensitive test of stellar evolutionary theory. However, past studies of the WR content of M31 have been biased towards detecting WC stars, as their emission line signatures are much stronger ...
Neugent Kathryn +2 more
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