Results 41 to 50 of about 10,594 (212)

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

YELLOW SUPERGIANTS IN THE ANDROMEDA GALAXY (M31) [PDF]

The Astrophysical Journal, 2009
Accepted by the Astrophysical ...
Drout, Maria R., Massey, Philip, Meynet, Georges, Tokarz, Susan, Caldwell, Nelson   +4 more
openaire   +2 more sources

Discovery of Radio/X-ray/Optical Resolved Supernova Remnants in the Center of the Andromeda Galaxy

, 2003
We have detected a spatially resolved supernova remnant (SNR) in the center of the Andromeda Galaxy, in radio, X-ray, and optical wavelengths. These observations provide the highest spatial resolution imaging of a radio/X-ray/optical SNR in that galaxy ...
A. K. H. Kong, B. F. Williams, Braun R., d’Odorico S., J. R. Dickel, L. O. Sjouwerman, M. R. Garcia, Magnier E. A.   +7 more
core   +1 more source

Eclipsing binaries suitable for distance determination in the Andromeda galaxy [PDF]

, 2006
The Local Group galaxies constitute a fundamental step in the definition of cosmic distance scale. Therefore, obtaining accurate distance determinations to the galaxies in the Local Group, and notably to the Andromeda Galaxy (M31), is essential to ...
Alard, Alves, Baade, Bonanos, Brewer, Brown, C. Jordi, Capaccioli, Clementini, Durrell, F. Vilardell, Fitzpatrick, Freedman, Freedman, Holland, I. Ribas, Joshi, Kaluzny, Landolt, Massey, McConnachie, Mochejska, Mould, Ostriker, Pritchet, Ribas, Ribas, Ribas, Richer, Saha, Schwarzenberg-Czerny, Stanek, Stanek, Stanek, Stetson, Todd, Welch, Wilson, Wozniak, Zebrun   +39 more
core   +2 more sources

A trio of new Local Group galaxies with extreme properties

, 2008
We report on the discovery of three new dwarf galaxies in the Local Group. These galaxies are found in new CFHT/MegaPrime g,i imaging of the south-western quadrant of M31, extending our extant survey area to include the majority of the southern ...
Alan W. McConnachie, Annette M. N. Ferguson, Avon Huxor, Geraint F. Lewis, Gregory Fahlman, Harvey Richer, Irwin M., Karachentsev I. D., Lynden-Bell D., Lynden-Bell D., Mike J. Irwin, Nial R. Tanvir, Nicolas F. Martin, Rodrigo A. Ibata, Salaris M., Scott C. Chapman, Sharina M. E.   +16 more
core   +1 more source

MOLECULAR GAS VELOCITY DISPERSIONS IN THE ANDROMEDA GALAXY [PDF]

The Astronomical Journal, 2016
ABSTRACT In order to characterize the distribution of molecular gas in spiral galaxies, we study the line profiles of CO (1 – 0) emission in Andromeda, our nearest massive spiral galaxy. We compare observations performed with the IRAM 30 m single-dish telescope and with the CARMA interferometer at a common resolution of 23 arcsec ≈ 85 pc
Caldú-Primo, A., Schruba, A.
openaire   +3 more sources

Galaxy Disruption in a Halo of Dark Matter

, 2003
The relics of disrupted satellite galaxies around the Milky Way and Andromeda have been found, but direct evidence of a satellite galaxy in the early stages of being disrupted has remained elusive.
Beasley, Michael, Bekki, Kenji, Brodie, Jean, Forbes, Duncan, Strader, Jay   +4 more
core   +1 more source

Anxiety and Evidence

Philosophical Issues, Volume 35, Issue 1, Page 17-28, October 2025.
ABSTRACT When does an agent possess a proposition P as evidence? According to Timothy Williamson, the answer is when, and only when, they know that P. Call this view E = K. In this article, I point out an unwanted consequence of E = K, which is that people who suffer from anxiety have impoverished empirical evidence due to their anxiety.
Rhys Borchert
wiley   +1 more source

The Collision Between The Milky Way And Andromeda

, 2008
We use a N--body/hydrodynamic simulation to forecast the future encounter between the Milky Way and the Andromeda galaxies, given current observational constraints on their relative distance, relative velocity, and masses.
Abraham Loeb, Adams, Barnes, Barnes, Barnes, Besla, Binney, Brunthaler, Busha, Busha, Cen, Cox, Cox, Davé, Desroches, Dubinski, Dubinski, Eisenhauer, Fich, Forbes, Gao, Gott, Górski, Hellsten, Hernquist, Hernquist, Hernquist, Hopkins, Kahn, Kasting, Katz, Kennicutt, Klypin, Kormendy, Korycansky, Li, Loeb, Loeb, McConnachie, McConnachie, Mihos, Mihos, Mo, Naab, Nagamine, Nagamine, Navarro, Navarro, Nicastro, Nicastro, Osone, Pahre, Peebles, Peebles, Peebles, Raychaudhury, Ribas, Rothberg, Sackmann, Sanders, Savage, Sawa, Seigar, Sembach, Shen, Spergel, Springel, Springel, Springel, Springel, Springel, Springel, Stinson, T. J. Cox, Tegmark, Toomre, Udry, Valtonen, van der Marel, Widrow, Willman, Wyse   +81 more
core   +1 more source

Dark matter halos and the anisotropy of ultra-high energy cosmic rays [PDF]

, 1999
Several explanations for the existence of Ultra High Energy Cosmic Rays invoke the idea that they originate from the decay of massive particles created in the reheating following inflation.
A.A. Watson, Afanasiev, Beck, Benakli, Benson, Berezinsky, Berezinsky, Berezinsky, Binney, Bird, Bird, Bird, Birkel, Caldwell, Chi, Coleman, Ding, Dubinski, Dubinski, Dubovsky, Efimov, Farrar, Fisher, Frenk, G.A. Medina Tanco, Greisen, Hayashida, Hillas, Hillas, Hillas, Hoffman, Katz, Katz, Kephart, Kravtsov, Kronberg, Lawrence, Linsley, Linsley, Linsley, Medina Tanco, Medina Tanco, Medina Tanco, Medina Tanco, Navarro, Reid, Sciama, Stanev, Stanev, Takeda, Takeda, Uchihori, Vallée, van der Marel, Warren, Watson, Watson, Winn, Zatsepin   +58 more
core   +2 more sources