Results 111 to 120 of about 370,839 (289)

New luminous blue variables in the Andromeda galaxy [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We performed spectroscopy of five Luminous Blue Variable (LBV) candidates and two known LBV stars (AE And and Var A-1) in M31. We obtained the same-epoch near-infrared (NIR) and optical spectra of these stars. The NIR spectra were taken with Triplespec spectrograph at the 3.5-m telescope at Apache Point Observatory, and the optical spectroscopy was ...
A. Sarkisyan, A. F. Valeev, A. F. Valeev, V. Malanushenko, Olga Sholukhova, Dmitry Bizyaev, Dmitry Bizyaev, S. Fabrika, S. Fabrika   +8 more
openaire   +5 more sources

Critical steps in an environmental metaproteomics workflow

Environmental Microbiology, Volume 26, Issue 5, May 2024.
Metaproteomics, a potent yet underutilized tool, reveals the complexities of microbial communities. Our review emphasizes its accessibility and provides diverse workflow descriptions tailored to various environmental matrices. We aim to convince readers of its capability to unravel the structural, dynamic, and metabolic nuances within microbial ...
Daniel J. Nebauer, Leanne A. Pearson, Brett A. Neilan   +2 more
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

The Herschel Exploitation of Local Galaxy Andromeda (HELGA). I: Global far-infrared and sub-mm morphology [PDF]

, 2012
We have obtained Herschel images at five wavelengths from 100 to 500 micron of a ~5.5x2.5 degree area centred on the local galaxy M31 (Andromeda), our nearest neighbour spiral galaxy, as part of the Herschel guaranteed time project "HELGA".
A. Boselli, A. R. Cooray, A. Remy, Aniano, B. O’Halloran, Bajaja, Barmby, Beaton, Bendo, Bernard, Block, Braine, Braun, Braun, C. D. Wilson, C. Waelkens, Chemin, Corbelli, Cuillandre, D. Clements, D. Thilker, Davies, Devereux, Draine, Draine, Draine, Eales, Edmunds, F. Galliano, G. Gentile, G. J. Bendo, G. P. Ford, Galliano, Gil de Paz, Gordon, Gordon, Griffin, Griffin, H. L. Gomez, H. Roussel, Haas, Habing, Hauser, Hildebrand, I. De Looze, J. A. D. L. Blommaert, J. Fritz, J. Kirk, J. Roman Duval, J. Verstappen, K. D. Gordon, Kramer, L. Cortese, L. Spinoglio, Leroy, Li, M. Baes, M. Boquien, M. J. Page, M. Vaccari, M. W. L. Smith, McConnachie, McConnachie, Meixner, Molinari, Montalto, Nieten, Odenwald, Pascale, Pietsch, Pilbratt, Poglitsch, R. Braun, S. A. Eales, S. C. Madden, Smith, Sofue, Stansberry, Strong, Swinyard, Tabatabaei, Thilker, Thilker, Trundle, V. Lebouteiller, W. K. Gear, Walterbos, Walterbos, Westmeier, Xu, Yin   +90 more
core   +5 more sources

Stellar Stream and Halo Structure in the Andromeda Galaxy from a Subaru/Hyper Suprime-Cam Survey [PDF]

, 2017
We present wide and deep photometry of the northwestern part of the halo of the Andromeda galaxy (M31) using Hyper Suprime-Cam on the Subaru Telescope.
Y. Komiyama, M. Chiba, Mikito Tanaka, Masayuki Tanaka, Takanobu Kirihara, Yohei Miki, M. Mori, R. Lupton, P. Guhathakurta, J. Kalirai, K. Gilbert, E. Kirby, M. Lee, I. Jang, Sanjib Sharma, Kohei Hayashi   +15 more
semanticscholar   +1 more source

A comparison of the Andromeda and Milky Way galaxies [PDF]

Symposium - International Astronomical Union, 1985
A comparison of some of the basic properties of M31 and the Milky Way indicates that in almost every respect M31 is larger than the Galaxy. It is more luminous, redder, more massive, and of earlier Hubble type. A detailed comparison of the spiral structure, based on optical tracers, for comparable areas in the outer parts of each galaxy shows ...
openaire   +2 more sources

A dual‐omics approach on the effects of fibroblast growth factor‐2 (FGF‐2) on ventral tegmental area dopaminergic neurons in response to alcohol consumption in mice

European Journal of Neuroscience, Volume 59, Issue 7, Page 1519-1535, April 2024.
FGF‐2 knockout (KO) results in reduced alcohol consumption and preference in the two‐bottle choice mouse model over 6 weeks of 20% voluntary alcohol access. Loss of FGF‐2 leads to the downregulation of Otx2, Igf1 and Lpl, as well as the upregulation of Vgat, Lmx1a, Foxa2, Ndnf, Chrna4 and Sat1b, genes specific for DAergic subpopulations.
Leonie Hose, Alina Katharina Langenhagen, Ekaterini Kefalakes, Theresa Schweitzer, Sabrina Kubinski, Segev Barak, Andreas Pich, Claudia Grothe   +7 more
wiley   +1 more source

Are the Milky Way and Andromeda unusual? A comparison with Milky Way and Andromeda Analogs [PDF]

, 2020
Our Milky Way provides a unique test case for galaxy evolution models, thanks to our privileged position within the Milky Way's disc. This position also complicates comparisons between the Milky Way and external galaxies, due to our inability to observe the Milky Way from an external point of view.
arxiv   +1 more source

Population Gradients in Local Group Dwarf Spheroidals

, 2001
We present a systematic and homogeneous analysis of population gradients for the Local Group dwarf spheroidals (dSphs) Carina, Sculptor, Sextans, Tucana, Andromeda I-III, V, and VI.
Andrew Dolphin, Ata Sarajedini, Bellazzini M., Daniel Harbeck, Denise Hurley-Keller, Doug Geisler, Eva K. Grebel, Grebel E. K., Irwin M., Jon Holtzman, Kaluzny J., Mario Mateo, Mironov A. V., Puragra Guhathakurta, Saviane I., Wolfgang Brandner   +15 more
core   +1 more source

Project AMIGA: A Minimal Covering Factor for Optically Thick Circumgalactic Gas around the Andromeda Galaxy [PDF]

, 2017
We present a deep search for 21 cm emission from the gaseous halo of Messier 31 as part of Project AMIGA, a large Hubble Space Telescope program to study the circumgalactic medium of the Andromeda galaxy. Our observations with the Robert C.
J. Howk, Christopher B. Wotta, M. Berg, N. Lehner, F. J. Lockman, Zachary Hafen, D. Pisano, C. Faucher-Giguére, B. Wakker, J. Prochaska, S. Wolfe, J. Ribaudo, K. Barger, Lauren Corlies, A. Fox, P. Guhathakurta, E. Jenkins, J. Kalirai, J. O’Meara, M. Peeples, Kyle R. Stewart, J. Strader   +21 more
semanticscholar   +1 more source