中文
相关论文

相关论文: Tagging the Chemical Evolution History of the Larg…

200 篇论文

The Small Magellanic Cloud is a close, irregular galaxy that has experienced a complex star formation history due to the strong interactions occurred both with the Large Magellanic Cloud and the Galaxy. Despite its importance, the chemical…

太阳与恒星天体物理 · 物理学 2015-06-17 A. Mucciarelli

We present the first-ever global, spatially-resolved reconstruction of the star formation history (SFH) of the Large Magellanic Cloud (LMC), based on the application of our StarFISH analysis software to the multiband photometry of twenty…

宇宙学与河外天体物理 · 物理学 2015-05-13 Jason Harris , Dennis Zaritsky

This paper compares the chemical evolution of the Large Magellanic Cloud (LMC) to that of the Milky Way (MW) and investigates the relation between the bar and the inner disc of the LMC in the context of the formation of the bar. We obtained…

星系天体物理 · 物理学 2015-06-16 M. Van der Swaelmen , V. Hill , F. Primas , A. A. Cole

We adopt a new chemical evolution model for the Large Magellanic Cloud (LMC) and thereby investigate its past star formation and chemical enrichment histories. The delay time distribution of type Ia supernovae recently revealed by type Ia…

宇宙学与河外天体物理 · 物理学 2015-06-11 Kenji Bekki , Takuji Tsujimoto

We present the chemical composition of 206 red giant branch stars members of the Small Magellanic Cloud (SMC) using optical, high-resolution spectra collected with the multi-object spectrograph FLAMES-GIRAFFE at the ESO Very Large…

星系天体物理 · 物理学 2023-03-29 A. Mucciarelli , A. Minelli , M. Bellazzini , C. Lardo , D. Romano , L. Origlia , F. R. Ferraro

We present the chemical abundances of Fe, alpha- and neutron-capture elements in 12 metal-poor Small Magellanic Cloud (SMC) giant stars, observed with the high-resolution spectrographs UVES/VLT and MIKE/Magellan. These stars have [Fe/H]…

Using WFPC2 aboard the Hubble Space Telescope, we have created deep color-magnitude diagrams in the V and I passbands for approximately 100,000 stars in a field at the center of the LMC bar and another in the disk. The main--sequence…

天体物理学 · 物理学 2008-11-26 Tammy A. Smecker-Hane , Andrew A. Cole , John S. Gallagher , Peter B. Stetson

The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in…

星系天体物理 · 物理学 2009-07-22 Takuji Tsujimoto , Kenji Bekki

We present the first reconstruction of the star formation history (SFH) of the Large and Small Magellanic Clouds (LMC and SMC) using Long Period Variable stars. These cool evolved stars reach their peak luminosity in the near-infrared;…

星系天体物理 · 物理学 2016-10-26 Sara Rezaei kh. , Atefeh Javadi , Habib Khosroshahi , Jacco Th. van Loon

The advent of the new class 8 meters telescopes allows for the first time the detailed study of numerous stars of galaxies other than our own. The Large Magellanic Cloud is one of the most interesting targets due to its proximity and its…

天体物理学 · 物理学 2015-06-24 L. Pompeia , V. Hill , M. Spite , A. Cole , F. Primas , M. Romaniello , L. Pasquini , M. -R. Cioni , T. Smecker-Hane

We analyze ages and metallicities for some 5.5 million stars distributed throughout the Large Magellanic Cloud (LMC) main body, obtained from CCD Washington CT1 photometry. We produce a comprehensive field star Age-Metallicity Relationship…

星系天体物理 · 物理学 2015-06-11 Andrés E. Piatti , Doug Geisler

We derive the first detailed chemical abundances of three star clusters in the Large Magellanic Cloud (LMC), NGC1831 (436+/-22 Myr), NGC1856 (350+/-18 Myr) and [SL63]268 (1230+/-62 Myr) using integrated-light spectroscopic observations…

星系天体物理 · 物理学 2022-05-11 Randa Asa'd , S. Hernandez , A. M. As'ad , M. Molero , F. Matteucci , S. Larsen , Igor V. Chilingarian

We investigate the dynamical and chemical evolution of the Large Magellanic Cloud (LMC) interacting with the Galaxy and the Small Magellanic Cloud (SMC) based on a series of self-consistent chemodynamical simulations. Our numerical models…

天体物理学 · 物理学 2009-11-10 K. Bekki , M. Chiba

This paper presents the chemical abundance analysis of a sample of 27 red giant stars located in 4 popolous intermediate-age globular clusters in the Large Magellanic Cloud, namely NGC 1651, 1783, 1978 and 2173. This analysis is based on…

天体物理学 · 物理学 2009-11-13 A. Mucciarelli , E. Carretta , L. Origlia , F. R. Ferraro

We present detailed chemical abundances in 8 clusters in the Large Magellanic Cloud (LMC). We measure abundances of 22 elements for clusters spanning a range in age of 0.05 to 12 Gyr, providing a comprehensive picture of the chemical…

星系天体物理 · 物理学 2015-06-03 J. E. Colucci , R. A. Bernstein , S. A. Cameron , A. McWilliam

We present the spatially-resolved star formation and chemical enrichment history of the Small Magellanic Cloud (SMC) across the entire central $4-degree x 4.5-degree area of the main body, based on UBVI photometry from our Magellanic Clouds…

天体物理学 · 物理学 2008-12-18 J. Harris , D. Zaritsky

We have observed ten red giant stars in four old Large Magellanic Cloud globular clusters with the high-resolution spectrograph MIKE on the Magellan Landon Clay 6.5-m telescope. The stars in our sample have up to 20 elemental abundance…

天体物理学 · 物理学 2009-11-13 Jennifer A. Johnson , Inese I. Ivans , Peter B. Stetson

We present the first metallicity distribution functions of the old field populations in the Magellanic Clouds. Our metallicities are based on the Fourier decomposition of Type ab RR Lyrae light curves from the Optical Gravitational Lensing…

星系天体物理 · 物理学 2015-06-03 Raoul Haschke , Eva K. Grebel , Sonia Duffau , Shoko Jin

In this study we investigate the chemical enrichment of the rapid neutron-capture process in the Small Magellanic Cloud (SMC). We measure [Eu/Fe] abundance ratios in 209 giant stars that are confirmed members of the SMC, providing the first…

Ca II triplet spectroscopy has been used to derive stellar metallicities for individual stars in four LMC fields situated at galactocentric distances of 3\arcdeg, 5\arcdeg, 6\arcdeg\@ and 8\arcdeg\@ to the north of the Bar. Observed…

天体物理学 · 物理学 2009-11-13 Ricardo Carrera , Carme Gallart , Eduardo Hardy , Antonio Aparicio , Robert Zinn
‹ 上一页 1 2 3 10 下一页 ›