Results 111 to 120 of about 159,199 (212)

Andromeda galaxy vs Milky Way galaxy

Communications of the Byurakan Astrophysical Observatory
Some physical features of the Andromeda galaxy are compared with their counterparts in the Milky Way to demonstrate that the Andromeda galaxy has traversed a longer evolutionary path. One of the evolutionary dependents in galaxies is the metallicity factor. The metallicity radial gradient in galaxies can also be used for this purpose.
openaire   +1 more source

HST Proper Motion of Andromeda III. Another Satellite Coorbiting the M31 Satellite Plane

The Astrophysical Journal
We measure the absolute proper motion of Andromeda III (And III) using Advanced Camera for Surveys/Wide Field Channel and WFPC2 exposures spanning an unprecedented 22 yr time baseline.
Dana I. Casetti-Dinescu, Marcel S. Pawlowski, Terrence M. Girard, Kosuke Jamie Kanehisa, Alexander Petroski, Max Martone, Vera Kozhurina-Platais, Imants Platais   +7 more
doaj   +1 more source

The Molecular Clouds of M31

The Astrophysical Journal
Deep interferometric observations of CO and dust continuum emission are obtained with the Submillimeter Array at 230 GHz to investigate the physical nature of the giant molecular cloud (GMC) population in the Andromeda galaxy (M31).
Charles J. Lada, Jan Forbrich, Glen Petitpas, Sébastien Viaene   +3 more
doaj   +1 more source

The Spectroscopic and Photometric Study of a Star Cluster Sample in Andromeda Halo

The Astronomical Journal
Halo star clusters serve as vital tracers for the formation and evolution of the Andromeda galaxy. In this work, we present physical parameters for 29 M31 halo star clusters, derived from a combination of spectroscopic and photometric data.
Hongrui Gu, Zhou Fan, Bingqiu Chen, Xiaoying Pang, Juanjuan Ren, Ruizheng Jiang, Song Wang, Kefeng Tan, Nan Song, Chun Li, Jie Zheng, Gang Zhao, Wei Wang, Yuqin Chen, Jingkun Zhao, Haining Li, Yihan Song, Haibo Yuan, Ali Luo, Yujuan Liu, Yaqian Wu   +20 more
doaj   +1 more source

Low Star Formation Efficiency in M31: Evidence for a Deficit of Bound Gas

The Astrophysical Journal
The Andromeda galaxy (M31) exhibits a systematically low star formation efficiency (SFE) compared to other star-forming galaxies. Star formation is thought to be regulated by the mass of gravitationally bound gas.
Fangyuan Deng, Sihan Jiao, Hauyu Baobab Liu, Jingwen Wu, Henrik Beuther, Fanyi Meng, Caroline Gieser, Yuxin Lin, Di Li, Chao-Wei Tsai, Junzhi Wang, Zhi-Yu Zhang, Fengwei Xu, Jakob den Brok, Linjing Feng, Zongnan Li, Yuxiang Liu   +16 more
doaj   +1 more source

Beyond the Local Group. I. Cosmic Filaments Govern the Spatial Alignments of Galaxy Pairs

The Astrophysical Journal
Using a large observational sample from the Sloan Digital Sky Survey, we investigate the spatial alignment between galaxy pairs and their local cosmic filaments. Focusing on pairs with stellar masses and separations comparable to the Milky Way–Andromeda (
Peng Wang
doaj   +1 more source

Identification and partial characterization of new cell density-dependent nucleocytoplasmic shuttling proteins and open chromatin. [PDF]

Sci Rep, 2023
Li K, Li Y, Nakamura F.
europepmc   +1 more source

Discovery of a Weak CN Spectral Absorption Feature in Red Supergiant Stars in the Andromeda (M31) and Triangulum (M33) Galaxies

The Astrophysical Journal
Using Keck DEIMOS spectra of stars in the Andromeda (M31) and Triangulum (M33) galaxies, selected from the large multiband (near-ultraviolet, visible light, and near-infrared) Hubble Space Telescope surveys PHAT and PHATTER, respectively, we have ...
Puragra Guhathakurta, Douglas Grion Filho, Antara R. Bhattacharya, Lara R. Cullinane, Julianne J. Dalcanton, Karoline M. Gilbert, Leo Girardi, Anika Kamath, Evan N. Kirby, Arya Maheshwari, Paola Marigo, Alexandra Masegian, Amanda C. N. Quirk, Rachel Raikar, Stanley M. Rinehart V, Caelum J. Rodriguez, Benjamin F. Williams   +16 more
doaj   +1 more source

The ellipticities of globular clusters in the Andromeda galaxy

, 1996
The projected ellipticities and orientations of 173 globular clusters in the Andromeda galaxy have been determined by using isodensity contours and 2D Gaussian fitting techniques.
A. Staneva, V. Golev, N. Spassova
core   +1 more source

Is the Andromeda galaxy approaching our galaxy Milky Way?

Communications of the Byurakan Astrophysical Observatory
Nodoubt that thedarkenergycarrier interactswiththebaryonicmatter. Due tothis interaction someportionsofenergyaretransferringgraduallytoallbaryonicobjectsandtheirsystemswithoutany exceptionatallhierarchical levelsof thebaryonicworld. Theconsequencesof theenergytransferare quitedramatic forall objects. Themostdramaticchanges takeplaceat thenuclear level.
H. A. Harutyunian, A.M. Grigoryan, A. Khasawneh, A. A. Torosyan   +3 more
openaire   +1 more source