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Showing 1 to 16 of 16 for “"M31"”.
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A multiwavelength analysis of M31's globular clusters and their low mass X-ray binaries
A multiwavelength analysis of M31’s globular clusters and their low mass X-ray binaries by Mark B. Peacock Globular clusters (GCs) are dense groups of thousands to millions of stars. They are often very old systems with ages similar to those of their host galaxies and the early Universe. These …
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Extragalactic Novae and Their Progenitors
… emission from novae in the Andromeda Galaxy (M31). In the first part of this thesis, a simple theoretical model is presented, which considers the higher-energy photons produced by the nova being absorbed by neutral hydrogen in the ejecta, before they can reach the potential dust-formation …
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Contributions of landlord and tenant under the stock-share lease
LD2668 .T4 1942 M31
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Accreting Compact Objects in Technicolor: Multiwavelength Characterization of High Mass X-ray Binaries in the Local Group
… demographics of HMXBs in Local Group galaxies M31 and the Small Magellanic Cloud (SMC) and the spatially resolved recent star formation history (SFH) of M33. In M31, I used observations from the Hubble Space Telescope (HST), the Chandra X-ray Observatory, and the Nuclear Spectroscopic Telescope …
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The accuracy of integrated star clusters parameters. The effects of stochasticity /
… respectively. Using 203 star clusters in the M31 galaxy, the importance of the metallicity effects has been demonstrated. The metallicity derived for 36 massive M31 star clusters is in a good agreement with the metallicity derived using spectroscopy taken from literature. For 747 star clusters …
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Integralinių žvaigždžių spiečių parametrų tikslumas. Stochastiniai efektai /
… respectively. Using 203 star clusters in the M31 galaxy, the importance of the metallicity effects has been demonstrated. The metallicity derived for 36 massive M31 star clusters is in a good agreement with the metallicity derived using spectroscopy taken from literature. For 747 star clusters …
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Star Cluster Formation Efficiency in the Andromeda Galaxy
… of star formation and stellar evolution in M31, and is an important legacy data product of the PHAT survey. I use the PHAT star cluster catalog and associated cluster age and mass characterizations to study two aspects of star cluster formation. First, I investigate cluster formation …
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Tracer populations in the local group
… be M = 2.7 +/- 0.5 x 10^12 Msun and the mass of M31 to be M = 1.5 +/- 0.4 x 10^12 Msun. Andromeda XII and Andromeda XIV are two M31 satellites that have been dubbed "extreme" and are thought to be on first infall into the M31 system. I modify the classical Timing Argument so that it can be …
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The Andromeda Optical and Infrared Disk Survey
… the nearest spiral galaxy, the Andromeda Galaxy (M31) is the ideal testbed for the joint study of resolved stellar populations and panchromatic SEDs. We present the Andromeda Optical and Infrared Disk Survey (ANDROIDS), which adds new near-UV to near-IR (ugriJKs) imaging using the MegaCam and …
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WISEly deconstructing the Great Andromeda Galaxy
… sources in a ~11 deg² elliptical area around the M31 region.
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Galactic Stellar Haloes in the CDM Model
… with expectations from the Milky Way and M31. Each halo has a complex structure, consisting of well-mixed components, tidal streams, shells and other subcomponents. This structure is not adequately described by smooth models. The central regions (within 10 kpc) of our haloes are highly …
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Chemical and kinematical evolution in nearby dwarf spheroidal galaxies
… satellite galaxy system of the Andromeda galaxy, M31. In this context, I spectroscopically analyzed the Carina dSph, which stands out among the LG dSphs because of its unusual, episodic star formation (SF) history. Carina bears evidence of at least three prominent stellar populations. Hence, I …
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3D-Spektrofotometrie extragalaktischer Emissionslinienobjekte
… in der nächstgelegenen großen Spiralgalaxie M31 (NGC 224) getestet, deren Helligkeiten und Koordinaten aus einer Durchmusterung vorlagen. Hierzu wurden Beobachtungen mit dem MPFS-Instrument am russischen 6m - Teleskop in Selentschuk/Kaukasus sowie mit INTEGRAL/WYFFOS am englischen …
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The outbursts and environments of novae
… also given of more generalised work on novae in M31, and areas for future investigation are discussed. Nova V458 Vulpeculae is one of only two novae observed to lie within a planetary neb- ula (PN). Due to the outburst a light echo effect within the PN is experienced. Using Ha data taken over …
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The stellar halos of Milky Way type galaxies in the EAGLE simulations
… dex/kpc, consistent with recent observations of M31. The gradient was found to be primarily driven by the transition from high metallicity in situ stars to low metallicity accreted stars with increasing radius, and sensitive to the simulation feedback efficiency employed in the simulation. The in …
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Extreme Stellar Populations in the Universe: Backsplash Dwarf Galaxies and Wandering Stars
… simulation of the formation of Milky Way and M31 Analogues, to explore the expected properties of intergalactic light (light found beyond the virial radii of galaxies) in poor groups and around isolated galaxies. We find that the luminosity fraction of intergalactic light is ~1%. This is …