Results 101 to 110 of about 173,443 (344)

Natures of clump-origin bulges: similarities to the Milky Way bulge [PDF]

arXiv, 2012
Bulges in spiral galaxies have been supposed to be classified into two types: classical bulges or pseudobulges. Classical bulges are thought to form by galactic merger with bursty star formation, whereas pseudobulges are suggested to form by secular evolution. Noguchi (1998, 1999) suggested another bulge formation scenario, `clump-origin bulge'.
arxiv  

Supervariate Gel Transforms into Various Biominerals in Salt Solutions

Advanced Functional Materials, EarlyView.
It is revealed that common calcium‐based biominerals can form from a stable, non‐toxic ‘supervariate’ gel. This tunable gel selectively yields calcite or hydroxyapatite in carbonate/phosphate solutions, while CaCl₂ facilitates the formation of dihydrate calcium pyrophosphate, which converts to hydroxyapatite upon drying. These findings provide insights
Xinxue Tang, Chong Wang, Yuk‐Tong Cheng, Junda Shen, Yunchen Long, Hongkun Li, Jie Yan, Yang Ren, Xiao Ma, Yufeng Huang, Zhengtao Xu, Jian Lu, Yang Yang Li   +12 more
wiley   +1 more source

Alpha element abundances and gradients in the Milky Way bulge from FLAMES-GIRAFFE spectra of 650 K giants

, 2011
We obtained FLAMES-GIRAFFE spectra (R=22,500) at the ESO Very Large Telescope for 650 bulge red giant branch (RGB) stars and performed spectral synthesis to measure Mg, Ca, Ti, and Si abundances.
A. Alves-Brito, A. Gomez, A. Renzini, Alonso, Alves-Brito, Asplund, Athanassoula, B. Barbuy, Babusiaux, Babusiaux, Bagnulo, Bensby, Bensby, Bournaud, Brown, Bureau, C. Babusiaux, Carollo, Clarkson, D. Minniti, Daddi, Debattista, Debattista, Di Matteo, Elmegreen, Fukugita, Fulbright, Fulbright, Förster Schreiber, G. Battaglia, Genzel, Genzel, Gratton, Gustafsson, Hopkins, Howard, Immeli, Kormendy, Lecureur, M. Rejkuba, M. Zoccali, McWilliam, McWilliam, Meléndez, Minniti, Minniti, Minniti, Nakasato, Nataf, O. A. Gonzalez, Patsis, Peletier, Peng, Plez, Ramírez, Rangwala, Rattenbury, Reddy, Renzini, Rich, Rich, Ryde, Ryde, S. Ortolani, Samland, Shen, Sneden, Stetson, Tacconi, Udalski, V. Hill, Weinzirl, Zoccali, Zoccali, Zoccali   +74 more
core   +3 more sources

The Nuclear Bulge of the Galaxy. III. Large-Scale Physical Characteristics of Stars and Interstellar Matter [PDF]

, 2002
We analyse IRAS and COBE DIRBE data at wavelengths between 2.2 and 240 mu of the central 500pc of the Galaxy and derive the large-scale distribution of stars and interstellar matter in the Nuclear Bulge.
Afflerbach, Athanassoula, Bally, Becklin, Binney, Bitran, Blitz, Blitz, Bohlin, Burton, Böker, Carollo, Catchpole, Cox, Cox, Dahmen, Downes, Draine, Drimmel, Dwek, Englmaier, Englmaier, Figer, Freudenreich, Genzel, Genzel, Genzel, Genzel, Georgelin, Gordon, Güsten, Haller, Handa, Hauser, Haynes, Heyer, Kelsall, Koyama, Krügel, LaRosa, Lebofsky, Lindqvist, Lis, Liszt, Maihara, Mathis, Mathis, Mauersberger, Mauersberger, McGinn, McNamara, Mezger, Mezger, Mezger, Mezger, Morris, Ossenkopf, P. G. Mezger, Phillip, Phillip, Poglitsch, R. Launhardt, R. Zylka, Reich, Reich, Reid, Rieke, Rieke, Sanders, Schulz, Scoville, Scoville, Serabyn, Sodroski, Sodroski, Sodroski, Sofue, Stanek, Tielens, Weiland, Wouterloot, Wright   +81 more
core   +3 more sources

Star Formation in Bulges from GALEX [PDF]

, 2007
Early-type galaxies, considered as large bulges, have been found to have had a much-more-than-boring star formation history in recent years by the UV satellite GALEX. The most massive bulges, brightest cluster galaxies, appear to be relatively free of young stars.
arxiv   +1 more source

Bulging

, 2018
Coverage ...
openaire   +2 more sources

CONSEQUENCES OF BULGING [PDF]

Journal of Experimental Biology, 2008
![Figure][1] Nicolaus Steno, famous today as the founder of modern geology, was better known in his own day as an anatomist. His public dissections attracted crowds across Europe in the 17th century.
openaire   +2 more sources

The history of the Galactic bulge [PDF]

Proceedings of the International Astronomical Union, 2016
AbstractPlanetary nebulae form in stellar populations with ages from 1 to 10 Gyr, and can be used to trace their star formation histories. Here we apply this to the Galactic bulge, where there are indications both for an old origin and for younger stars. We use new stellar models, which have significant different evolutionary speeds during the post-AGB
Zijlstra, A. A., Gesicki, K., Miller Bertolami, Marcelo Miguel   +2 more
openaire   +2 more sources

Accelerated Kinetics of Desolvation and Redox Transformation Enabled by MOF Sieving for High‐Loading Mg‐S Battery

Advanced Functional Materials, EarlyView.
A strategy of sieving catalysis based on the MIL‐101(Cr) with multistage pore structure and Lewis acid sites has been proposed as the catalyst to accelerate the kinetics of desolvation and redox conversion of sulfur species, achieving high performance Mg‐S batteries.
Qinghua Guan, Quan Zhuang, Wenlong Xu, Yongzheng Zhang, Shuang Cheng, Jing Zhang, Meinan Liu, Hongzhen Lin, Jian Wang   +8 more
wiley   +1 more source

Correlations among global photometric properties of disk galaxies [PDF]

, 1999
Using a two-dimensional galaxy image decomposition technique, we extract global bulge and disk parameters for a complete sample of early type disk galaxies in the near infrared K band.
Ajit Kembhavi, Andredakis Y. C., Bingelli B., Bingelli B., Caon N., Combes F., de Vaucouleurs G., Habib G. Khosroshahi, Michard R., Yogesh Wadadekar   +9 more
core   +3 more sources