Niraj D. Welikala Thesis - [email protected]
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
Unfolding the Milky Way bulge - International Max Planck Research
... Baade’s Window (left panels). Upper panels show the corresponding CMD for each field, oriented with color along the y-axis and magnitude along the x-axis. Density contours denote the single and double RC in each field. The second gaussian component in BW field is due to the RGB bump. . . . . . . . . ...
... Baade’s Window (left panels). Upper panels show the corresponding CMD for each field, oriented with color along the y-axis and magnitude along the x-axis. Density contours denote the single and double RC in each field. The second gaussian component in BW field is due to the RGB bump. . . . . . . . . ...
environmental effects on galaxy evolution in nearby clusters
... The observational evidences presented in this work suggest that: (I) Giant ellipticals are an old, homogeneous population showing no or little evolution at least in the past 8 Gyr; unlike dwarf ellipticals which still contain young stellar populations. (II) The importance of different environmental ...
... The observational evidences presented in this work suggest that: (I) Giant ellipticals are an old, homogeneous population showing no or little evolution at least in the past 8 Gyr; unlike dwarf ellipticals which still contain young stellar populations. (II) The importance of different environmental ...
CoRoT III programme
... the possibility to probe the stellar populations of the galaxy, and opens a new discipline: Galactic Structure and Evolution using Seismology. In this programme CoRoT and Kepler are complementary because they observe different regions of the galaxy. Only CoRoT observes in the outer galactic disk, an ...
... the possibility to probe the stellar populations of the galaxy, and opens a new discipline: Galactic Structure and Evolution using Seismology. In this programme CoRoT and Kepler are complementary because they observe different regions of the galaxy. Only CoRoT observes in the outer galactic disk, an ...
Franz Liszt: An Esoteric Astrological Analysis
... and more of the minor planets to their repertoire, finding that they lend useful additional information in the casting of horoscopes. For the purposes of the present article, the author focused on a small group of the most wellknown asteroids and centaurs, as well as a few trans-Neptunian objects su ...
... and more of the minor planets to their repertoire, finding that they lend useful additional information in the casting of horoscopes. For the purposes of the present article, the author focused on a small group of the most wellknown asteroids and centaurs, as well as a few trans-Neptunian objects su ...
... starbursts, they are thought to make classical bulges and elliptical galaxies. We do not review classical bulges other than to contrast them to pseudobulges. Most work on galaxy evolution in the past 25 years has concentrated on hierarchical clustering and mergers. As the Universe expands, and as ga ...
STARLAB
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
An Atlas of Stellar Spectra
... blends which may be useful at one spectral type may be quite insensitive at another. In fact, some lines which show a positive absolute-magnitude effect for some spectral classes may show a negative one for others. This is true for certain lines of H, Sr II, and Ba II. Besides the variation with spe ...
... blends which may be useful at one spectral type may be quite insensitive at another. In fact, some lines which show a positive absolute-magnitude effect for some spectral classes may show a negative one for others. This is true for certain lines of H, Sr II, and Ba II. Besides the variation with spe ...
Protoplanetary Disks and their Evolution
... Large Spitzer surveys have mapped about 90% of all the star forming regions within 1 kpc of the sun (e.g., Jorgensen et al. 2006; Harvey et al. 2006, 2007, Padgett et al 2008; Kirk et al. 2009; Rebull et al. 2006, 2010) and spectra have been obtained for over 2000 YSOs therein (e.g., Kesser-Silacci ...
... Large Spitzer surveys have mapped about 90% of all the star forming regions within 1 kpc of the sun (e.g., Jorgensen et al. 2006; Harvey et al. 2006, 2007, Padgett et al 2008; Kirk et al. 2009; Rebull et al. 2006, 2010) and spectra have been obtained for over 2000 YSOs therein (e.g., Kesser-Silacci ...
Communications in Asteroseismology
... about in order not to lose valuable time. The answer to the second question, however, is hidden in a rather long story which the participants of this workshop have now been told. In short, a long chain of events made one of the organizers make a joke, resulting in a full hall of variable-star resear ...
... about in order not to lose valuable time. The answer to the second question, however, is hidden in a rather long story which the participants of this workshop have now been told. In short, a long chain of events made one of the organizers make a joke, resulting in a full hall of variable-star resear ...
1 Globular Cluster Systems - McMaster Physics and Astronomy
... used by Shapley to estimate the centroid of the system and thus { again for the rst time { to determine the distance from the Sun to the Galactic center. The second graph shows us exactly the same plot with the most modern measurements. The data have improved dramatically over the intervening 80 ye ...
... used by Shapley to estimate the centroid of the system and thus { again for the rst time { to determine the distance from the Sun to the Galactic center. The second graph shows us exactly the same plot with the most modern measurements. The data have improved dramatically over the intervening 80 ye ...
X-Ray Spectroscopy of Stars
... These topics define the main focus of the present review. We aim at summarizing our understanding of cool and hot star physics contributed by X-ray spectroscopy. Naturally, therefore, we will focus on observations and interpretations that the XMM-Newton and C HAN DRA high-resolution spectrometers ha ...
... These topics define the main focus of the present review. We aim at summarizing our understanding of cool and hot star physics contributed by X-ray spectroscopy. Naturally, therefore, we will focus on observations and interpretations that the XMM-Newton and C HAN DRA high-resolution spectrometers ha ...
Astronomy Astrophysics
... color diagrams revealed 58 new star cluster candidates. Their basic properties are listed in Table 1. The first column of the table cites the identification, followed by the equatorial coordinates of the candidate’s center, the VVV tile name, a visually estimated apparent cluster radius in arcsecond ...
... color diagrams revealed 58 new star cluster candidates. Their basic properties are listed in Table 1. The first column of the table cites the identification, followed by the equatorial coordinates of the candidate’s center, the VVV tile name, a visually estimated apparent cluster radius in arcsecond ...
THE UV-OPTICAL COLOR MAGNITUDE DIAGRAM. II. PHYSICAL
... We use the UV-optical color magnitude diagram in combination with spectroscopic and photometric measurements derived from the SDSS spectroscopic sample to measure the distribution of galaxies in the local universe (z < 0:25) and their physical properties as a function of specific star formation rate ...
... We use the UV-optical color magnitude diagram in combination with spectroscopic and photometric measurements derived from the SDSS spectroscopic sample to measure the distribution of galaxies in the local universe (z < 0:25) and their physical properties as a function of specific star formation rate ...
The Lupus clouds - European Southern Observatory
... evolution and perhaps the origin of the complex. The entire variety of objects related to the various stages of early stellar evolution are represented in Lupus, including some of the best studied T Tauri stars like RU Lup. The determination of many properties of the clouds, as well as their associa ...
... evolution and perhaps the origin of the complex. The entire variety of objects related to the various stages of early stellar evolution are represented in Lupus, including some of the best studied T Tauri stars like RU Lup. The determination of many properties of the clouds, as well as their associa ...
Mapping the Pathways of Galaxy Transformation Across Time and
... outcomes from the IMACS Cluster-Building Survey: our finding that most z∼0.5 poststarbursts are rejuvenated passive galaxies, and a simple model positing that every galaxy has a lognormal SFH whose parameters are set at birth. Both studies reinterpreted key metrics of galaxy evolution typically seen ...
... outcomes from the IMACS Cluster-Building Survey: our finding that most z∼0.5 poststarbursts are rejuvenated passive galaxies, and a simple model positing that every galaxy has a lognormal SFH whose parameters are set at birth. Both studies reinterpreted key metrics of galaxy evolution typically seen ...
Differential rotation in Sun-like stars from surface variability and
... making direct probes of rotation very difficult (Herbst et al. 2007). The circumstellar material will eventually either be accreted onto the star, expelled by stellar winds and photon pressure, or form a disk, at which point the central star becomes visible. Figure 1.1 shows the general trends of ro ...
... making direct probes of rotation very difficult (Herbst et al. 2007). The circumstellar material will eventually either be accreted onto the star, expelled by stellar winds and photon pressure, or form a disk, at which point the central star becomes visible. Figure 1.1 shows the general trends of ro ...
Here - NASA/IPAC Extragalactic Database
... densities n are 103 – 104 cm−3 for compact H ii regions. The average densities in giant extragalactic H ii regions are lower, typically 102 cm−3 since giant H ii regions encompass also zones of diffuse material. The total supply of nebular gas is generally large, so that all (or at least a significa ...
... densities n are 103 – 104 cm−3 for compact H ii regions. The average densities in giant extragalactic H ii regions are lower, typically 102 cm−3 since giant H ii regions encompass also zones of diffuse material. The total supply of nebular gas is generally large, so that all (or at least a significa ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.