Results 11 to 20 of about 140,939 (212)

The Phanerozoic climate. [PDF]

open access: yesAnn N Y Acad Sci, 2023
We review the long‐term climate variations during the last 540 million years (Phanerozoic Eon). We first summarize the geological and geochemical datasets available for reconstruction of long‐term climate variations. We then explore the main drivers of climate that appear to explain a large fraction of these climatic oscillations. The first is the long‐
Shaviv NJ, Svensmark H, Veizer J.
europepmc   +2 more sources

Light Curve Analyses of the Eclipsing Binary EROS 1010 in the Large Magellanic Cloud [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
We present BV light curves of EROS 1010 which is located in the central bar of the Large Magellanic Cloud. The BV light curves including BR and I light curves observed by the EROS and OGLE projects, have been analyzed using the 2005 version of the Wilson
Kyeong-Soo Hong, Young-Woon Kang
doaj   +1 more source

A Census of the Most Luminous Stars. I. The Upper HR Diagram for the Large Magellanic Cloud

open access: yesThe Astronomical Journal, 2023
Spectral classification and multiwavelength photometry for the most luminous stars in the LMC has greatly increased due to several recent surveys for both the hottest and coolest members.
John C. Martin, Roberta M. Humphreys
doaj   +1 more source

Quantifying the Impact of the Large Magellanic Cloud on the Structure of the Milky Way’s Dark Matter Halo Using Basis Function Expansions [PDF]

open access: yesAstrophysical Journal, 2020
Indications of disequilibrium throughout the Milky Way (MW) highlight the need for compact, flexible, non-parametric descriptions of phase–space distributions of galaxies.
N. Garavito-Camargo   +7 more
semanticscholar   +1 more source

Magellanic Clouds Cepheids: Thorium Abundances [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2018
The analysis of the high-resolution spectra of 31 Magellanic Clouds Cepheid variables enabled the identification of thorium lines. The abundances of thorium were found with spectrum synthesis method. The calculated thorium abundances exhibit correlations
Yeuncheol Jeong   +5 more
doaj   +1 more source

Constraining the thermally pulsing asymptotic giant branch phase with resolved stellar populations in the Large Magellanic Cloud [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
Reliable models of the thermally pulsing asymptotic giant branch (TP-AGB) phase are of critical importance across astrophysics, including our interpretation of the spectral energy distribution of galaxies, cosmic dust production, and enrichment of the ...
G. Pastorelli   +20 more
semanticscholar   +1 more source

CCD imagers for the Transiting Exoplanet Survey Satellite from benchtop to space environment

open access: yesAstronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract The Transiting Exoplanet Survey Satellite (TESS) is a Massachusetts Institute of Technology‐led NASA Explorer‐class mission planned to spend 2 years discovering transiting exoplanets by an all‐sky survey. The observatory contains four wide field‐of‐view camera systems for a total of 16.8 Megapixel, low‐noise, low‐power CCD detectors.
Vyshnavi Suntharalingam   +5 more
wiley   +1 more source

Consistent Calibration of the Tip of the Red Giant Branch in the Large Magellanic Cloud on the Hubble Space Telescope Photometric System and a Redetermination of the Hubble Constant [PDF]

open access: yesAstrophysical Journal, 2019
We present a calibration of the tip of the red giant branch (TRGB) in the Large Magellanic Cloud (LMC) on the Hubble Space Telescope (HST)/ACS F814W system.
W. Yuan   +4 more
semanticscholar   +1 more source

LRO‐LAMP Lunar South Pole Cold Traps: Assessment of H2O and Potential CO2 and NH3 Reserves

open access: yesJournal of Geophysical Research: Planets, Volume 128, Issue 8, August 2023., 2023
Abstract Nighttime Lyman Alpha Mapping Project (LAMP) observations are used to investigate condensed volatiles at the south polar region of the Moon. This study incorporates LAMP data from the first ∼7 years of the mission and Diviner annual maximum temperatures to search for volatile signatures associated with H2O, NH3, and CO2. Other stable potential
L. O. Magaña   +15 more
wiley   +1 more source

The MACHO Project: Microlensing Results from 5.7 Years of Large Magellanic Cloud Observations [PDF]

open access: yes, 2000
We report on our search for microlensing toward the Large Magellanic Cloud (LMC). Analysis of 5.7 yr of photometry on 11.9 million stars in the LMC reveals 13-17 microlensing events.
C. Alcock   +35 more
semanticscholar   +1 more source

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