Results 41 to 50 of about 15,937 (210)

Recurrent novae in M31 [PDF]

, 2015
The reported positions of 964 suspected nova eruptions in M31 recorded through the end of calendar year 2013 have been compared in order to identify recurrent nova (RN) candidates.
Darnley, M. J., Schweizer, F., Pietsch, W., Rector, T. A., Henze, M., Shafter, A. W., Bode, M. F., Bryan, J., Williams, S. C., Hornoch, K., Orio, M.   +10 more
core   +5 more sources

Elemental Abundances in M31: Individual and Coadded Spectroscopic [Fe/H] and [α/Fe] throughout the M31 Halo with SPLASH

The Astrophysical Journal, 2023
We present spectroscopic chemical abundances of red giant branch stars in Andromeda (M31), using medium-resolution ( R ∼ 6000) spectra obtained via the Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo survey.
J. Leigh Wojno, Karoline M. Gilbert, Evan N. Kirby, Ivanna Escala, Puragra Guhathakurta, Rachael L. Beaton, Jason Kalirai, Masashi Chiba, Steven R. Majewski   +8 more
doaj   +1 more source

The Red Supergiant Binary Fraction as a Function of Metallicity in M31 and M33 [PDF]

, 2020
Recent work measuring the binary fraction of evolved red supergiants (RSGs) in the Magellanic Clouds points to a value between 15% and 30%, with the majority of the companions being unevolved B-type stars as dictated by stellar evolution.
K. Neugent
semanticscholar   +1 more source

The M31 pixel lensing plan campaign : macho lensing and self-lensing signals [PDF]

, 2014
A.G. was supported by NSF grant AST-1103471. M.D. is thankful to Qatar National Research Fund (QNRF), member of Qatar Foundation, for support by grant NPRP 09-476-1-078. P.J.
SCARPETTA, Gaetano, Dall'Ora, M, Ingrosso, G., M. Safonova, Calchi Novati, S., Gualandi, R., Gould, A, Scarpetta, G., Dall'Ora, M., BOZZA, Valerio, F. De Paolis, S. Calchi Novati, Scarpetta G., Ingrosso, G, A. Gould, Gould, A., Strafella, F, Jetzer, Ph., Scarpetta, G, MANCINI, Luigi, Ingrosso G., M. Sereno, Sereno M., Subramaniam, A., I. Bruni, Mancini, L, Mancini, L., CALCHI NOVATI, Sebastiano, Bruni, I, Subramaniam A., DE PAOLIS, Francesco, NUCITA, Achille, F. Strafella, A. Subramaniam, Jetzer, Ph, M. Dall'Ora, Dominik, M., Bozza, V., Bozza, V, Dominik, M, Nucita A., Nucita, A., Safonova M., Gualandi R., M. Dominik, Sereno, M., P.h. Jetzer, Dall'Ora M., Subramaniam, A, Bruni, I., SERENO, MAURO, Jetzer, P., Bozza V., Safonova, M., De Paolis, F, Sereno, M, Jetzer P., STRAFELLA, Francesco, De Paolis F., Nucita, A, L. Mancini, G. Scarpetta, INGROSSO, Gabriele, Bruni I., Gualandi, R, Strafella F., De Paolis, F., Gould A., G. Ingrosso, Jetzer, P, Dominik M., Safonova, M, Strafella, F., Calchi Novati S., V. Bozza, A. Nucita, Calchi Novati, S, R. Gualandi, Mancini L.   +78 more
core   +1 more source

Interstellar polarization in M31 [PDF]

, 2004
The wavelength dependence of interstellar polarization due to dust in M31 has been observed along four sight lines. Only one sight line had been measured previously.
Nordsieck, Kenneth H., Clayton, Geoffrey C., Smith, Paul S., Babler, Brian L., Gordon, Karl D., Wolff, Michael J.   +5 more
core   +1 more source

Survey of planetary nebulae in Andromeda (M31) [PDF]

, 2020
Andromeda (M31) is the nearest giant spiral galaxy to our Milky Way (MW) and the most massive member of our Local Group, with its diffuse halo spanning over 100 sq. deg. on the sky.
Bhattacharya, Souradeep
core   +1 more source

Discovery of 20 UV-emitting SNRs in M31 with UVIT

The Astronomical Journal, 2023
We present the first catalog of supernova remnants (SNRs) in M31 that exhibit diffuse ultraviolet (UV) emission. UV images of M31 were obtained by the Ultraviolet Imaging Telescope (UVIT) on the AstroSat satellite, and the list of SNRs was obtained from ...
Denis Leahy, Christopher Monaghan, Sujith Ranasinghe   +2 more
doaj   +1 more source

An updated detailed characterization of planes of satellites in the MW and M31 [PDF]

, 2020
We present a detailed characterization of planes of satellite galaxies in the Milky Way (MW) and M31. For a positional analysis, we introduce an extension to the `4-galaxy-normal density plot' method \citep[][P13]{Pawlowski13}.
I. Santos-Santos, R. Domínguez-Tenreiro, M. Pawlowski   +2 more
semanticscholar   +1 more source

AstroSat UVIT Survey of M31: Point-source Catalog

Astrophysical Journal Supplement Series, 2020
An ultraviolet survey of M31 has been carried out during 2017-19 with the UltraViolet Imaging Telescope (UVIT) instrument on board the AstroSat Observatory.
D. Leahy, J. Postma, Y. Chen, M. Buick
semanticscholar   +1 more source

First Gaia Dynamics of the Andromeda System: DR2 Proper Motions, Orbits, and Rotation of M31 and M33 [PDF]

Astrophysical Journal, 2018
The 3D velocities of M31 and M33 are important for understanding the evolution and cosmological context of the Local Group. Their most massive stars are detected by Gaia, and we use Data Release 2 (DR2) to determine the galaxy proper motions (PMs).
R. P. van der Marel, M. Fardal, S. Sohn, E. Patel, G. Besla, A. del Pino, J. Sahlmann, L. Watkins   +7 more
semanticscholar   +1 more source