Results 101 to 110 of about 47,309 (203)

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

A Search for Planetary Nebulae With the SDSS: the outer regions of M31

, 2013
We have developed a method to identify planetary nebula (PN) candidates in imaging data of the Sloan Digital Sky Survey (SDSS). This method exploits the SDSS' five-band sampling of emission lines in PN spectra, which results in a color signature distinct
Grebel, E. K., Kniazev, A. Y., Martinez-Delgado, D., Rix, H-W., Snedden, S. A., Zucker, D. B.   +5 more
core   +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

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

Full spectral fitting of Milky Way and M31 globular clusters: ages and metallicities

, 2012
Context: The formation and evolution of disk galaxies are long standing questions in Astronomy. Understanding the properties of globular cluster systems can lead to important insights on the evolution of its host galaxy.
Alves-Brito, Alan, Brodie, Jean P., Cezario, Enio, Coelho, Paula R. T., Forbes, Duncan A.   +4 more
core   +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

The nucleus of M31

The Astrophysical Journal, 1992
We calculate the broad-band spectrum expected of a 10 exp 7 solar mass black hole accreting from an ambient galactic wind in the nucleus of M31, and we discuss several testable predictions of this model: (1) when resolved, this source will probably be elongated, perhaps in the direction of the semistellar nucleus BD +40 148 deg; (2) its radio spectral ...
openaire   +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

A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33

, 2006
We present UBVRI photometry obtained from Mosaic images of M31 and M33 using the KPNO 4-m telescope. The survey covers 2.2 sq degrees of M31, and 0.8 sq degrees of M33, chosen so as to include all of the regions currently active in forming massive stars.
Berkhuijsen E. M., Bessell M. S., Bianchi L., Bonanos A. Z., George H. Jacoby, Israelian G., K. A. G. Olsen, Magnier E. A., Magnier E. A., Monteverde M. I., Paul W. Hodge, Philip Massey, R. C. Smith, Shay B. Strong, Wayne Schlingman   +14 more
core   +1 more source

The Anisotropic Distribution of M 31 Satellite Galaxies: A Polar Great Plane of Early-Type Companions

, 2005
The highly anisotropic distribution and apparent alignment of the Galactic satellites in polar great planes begs the question how common such distributions are.
Andreas Koch, Boggs P. T., Dauphole B., de Vaucouleurs G., Duc P.-A., Eva K. Grebel, Grebel E., Holmberg E., Karachentsev I., Karachentsev I., Kunkel W., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Nieto J.-L., van den Bergh S.   +15 more
core   +1 more source