Results 51 to 60 of about 4,369 (137)

Extinction Distributions in Nearby Star-resolved Galaxies. I. M31

The Astronomical Journal
An extinction distribution of the Andromeda galaxy (M31) is constructed with member stars as tracers by fitting multiband photometric data from UKIRT/WFCAM, Panoramic Survey Telescope and Rapid Response System 1, and Gaia DR3.
Yuxi Wang, Jian Gao, Yi Ren, Bingqiu Chen   +3 more
doaj   +1 more source

Deep in the Fields of the Andromeda Halo: Discovery of the Pegasus VII Dwarf Galaxy in UNIONS

The Astrophysical Journal
We present the newly discovered dwarf galaxy Pegasus VII (Peg VII), a member of the M31 subgroup which has been uncovered in the ri photometric catalogs from the Ultraviolet Near-Infrared Optical Northern Survey and confirmed with follow-up imaging from ...
Simon E. T. Smith, Alan W. McConnachie, Stephen Gwyn, Christian R. Hayes, Massimiliano Gatto, Ken Chambers, Jean-Charles Cuillandre, Michael J. Hudson, Eugene Magnier, Nicolas Martin, Julio Navarro   +10 more
doaj   +1 more source

Evaluation of the astrometric capability of Multi-Channel Imager and simulated calculation of proper motion of M31

Frontiers in Astronomy and Space Sciences
Introduction: The Multi-Channel Imager (MCI), one of the back-end modules of the future China Space Station Telescope (CSST), is designed for high-precision spacebased astronomical observations.
Wenfeng Fang, Wenfeng Fang, Yong Yu, Yong Yu, Xiyan Peng, Zhaojun Yan, Yanzhen Hao, Yanzhen Hao, Huanyuan Shan, Zhaoxiang Qi, Zhaoxiang Qi, Shilong Liao, Shilong Liao, Zhenghong Tang, Zhenghong Tang, Qiqi Wu, Qiqi Wu, Zhensen Fu, Zhensen Fu   +18 more
doaj   +1 more source

Evidence for a Hot Galactic Halo around the Andromeda Galaxy Using Fast Radio Bursts along Two Sightlines

The Astrophysical Journal
Fast radio bursts (FRBs) are millisecond-duration radio transients that serve as unique probes of ionizedextragalactic matter. We report the discovery and localization of two FRBs piercing the Andromeda galaxy (M31) with the realfast transient-detection ...
Reshma Anna-Thomas, Casey J. Law, Eric W. Koch, Alexa C. Gordon, Kritti Sharma, Benjamin F. Williams, Nickolas M. Pingel, Sarah Burke-Spolaor, Zhuo Chen, Jordan Stanley, Calvin Dear, Frank Verdi, J. Xavier Prochaska, Geoffrey C. Bower, Laura Chomiuk, Liam Connor, Paul B. Demorest, Wen-Fai Fong, Anya Nugent, Fabian Walter   +19 more
doaj   +1 more source

Deep Andromeda JCMT SCUBA-2 Observations. The Submillimeter Maps and Giant Molecular Clouds

The Astrophysical Journal Supplement Series
We have carried out unprecedentedly deep, nearly confusion-limited JCMT SCUBA-2 mapping observations on the nearest spiral galaxy, M31 (Andromeda). The 850 μ m image with a ∼50 pc resolution yields a comprehensive catalog of 383 giant molecular clouds ...
Sihan Jiao, Jingwen Wu, Hauyu Baobab Liu, Chao-Wei Tsai, Yuxin Lin, Di Li, Zhi-Yu Zhang, Yu Cheng, Linjing Feng, Henrik Beuther, Junzhi Wang, Lihwai Lin, Jakob den Brok, Ludan Zhang, Fengwei Xu, Fanyi Meng, Zongnan Li, Ryan P. Keenan, Si-Yue Yu, Niankun Yu, Zheng Zheng, Junhao Liu, Yuxiang Liu, Hao Ruan, Fangyuan Deng, Yuanzhen Xiong   +25 more
doaj   +1 more source

Involucramiento de producto y lealtad de marca para productos de consumo masivo en Bogotá D.C.☆

Estudios Gerenciales, 2013
Mediante este artículo, se busca validar algunas hipótesis referentes a la relación entre involucramiento de pro- ducto y lealtad de marca para productos de consumo masivo en Bogotá (Colombia).
Pedro Julián Ramírez Angulo, Edison Jair Duque Oliva   +1 more
doaj   +1 more source

Kinematics and Metallicity of the Dwarf Spheroidal Galaxy Andromeda XVIII

The Astrophysical Journal
Andromeda XVIII is an isolated dwarf galaxy 579 kpc away from the nearest large galaxy, M31. It is a candidate “backsplash galaxy” that might have been affected by a close passage to M31.
Kateryna A. Kvasova, Evan N. Kirby, Rachael L. Beaton   +2 more
doaj   +1 more source

AstroSat UVIT Survey of M31: New Compact Source Catalog

The Astrophysical Journal Supplement Series
An ultraviolet survey of M31 was carried out during 2017–2023 with the UltraViolet Imaging Telescope (UVIT) instrument on board the AstroSat Observatory. Here we present far- and near-ultraviolet (FUV and NUV) observations from the M31 UVIT survey, which
Denis Leahy, Sujith Ranasinghe, Saptadwipa Mitra, Kripansh Rawal   +3 more
doaj   +1 more source

Encounters between M33 and Present-day M31 Satellites Hint at a Previous Group Accretion

The Astrophysical Journal
This work investigates whether two known Andromeda (M31) satellites, Pisces (LGS 3) and Andromeda XVI (And XVI), have interacted with M33, M31’s most massive satellite.
Ekta Patel, Paul Bennet, Sangmo Tony Sohn, Mark A. Fardal, Roeland P. van der Marel   +4 more
doaj   +1 more source

PHAST. The Panchromatic Hubble Andromeda Southern Treasury. I. Ultraviolet and Optical Photometry of over 90 Million Stars in M31

The Astrophysical Journal
The Panchromatic Hubble Andromeda Southern Treasury (PHAST) is a large 195-orbit Hubble Space Telescope program imaging ∼0.45 deg ^2 of the southern half of M31's star-forming disk at optical and near-ultraviolet (NUV) wavelengths.
Zhuo Chen, Benjamin Williams, Dustin Lang, Andrew Dolphin, Meredith Durbin, Julianne J. Dalcanton, Adam Smercina, Léo Girardi, Claire E. Murray, Eric F. Bell, Martha L. Boyer, Richard D’Souza, Karoline Gilbert, Karl Gordon, Puragra Guhathakurta, Francois Hammer, L. Clifton Johnson, Tod R. Lauer, Margaret Lazzarini, Jeremiah W. Murphy, Ekta Patel, Amanda Quirk, Mariangelly Díaz Rodríguez, Julia Christine Roman-Duval, Robyn E. Sanderson, Anil Seth, Tobin M. Wainer, Daniel R. Weisz   +27 more
doaj   +1 more source