The XMM-Newton Bright Serendipitous Survey
... (with some exceptions, as discussed in the next sections) the selected sources. The disadvantage of dealing with shallow/wideangle samples is that the techniques to observe efficiently many sources at once, like Multi-objects or fibers-based methods, cannot be applied for the optical follow-up, give ...
... (with some exceptions, as discussed in the next sections) the selected sources. The disadvantage of dealing with shallow/wideangle samples is that the techniques to observe efficiently many sources at once, like Multi-objects or fibers-based methods, cannot be applied for the optical follow-up, give ...
THE 2MASS WIDE-FIELD T DWARF SEARCH. II. DISCOVERY OF
... not seen in the OSIRIS images; these are listed in Table 1, with updated designations and photometry from the 2MASS All Sky Data Release (2MASS ADR; Cutri et al. 2003). A few sources were identified as unflagged image artifacts arising from electronic feedback in the quadrant readout of the 2MASS NICM ...
... not seen in the OSIRIS images; these are listed in Table 1, with updated designations and photometry from the 2MASS All Sky Data Release (2MASS ADR; Cutri et al. 2003). A few sources were identified as unflagged image artifacts arising from electronic feedback in the quadrant readout of the 2MASS NICM ...
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 ...
STARLAB
... stories about four easy-to-find constellations, such as Orion, Big Bear and Little #FBS BOE$BTTJPQFJB 4FFUIF(SFFL.ZUIPMPHZ$ZMJOEFSTFDUJPO 5IFOTIPX the Constellation Cylinder and with an arrow pointer, show the students where those four constellations are on that cylinder. Next, show the ...
... stories about four easy-to-find constellations, such as Orion, Big Bear and Little #FBS BOE$BTTJPQFJB 4FFUIF(SFFL.ZUIPMPHZ$ZMJOEFSTFDUJPO 5IFOTIPX the Constellation Cylinder and with an arrow pointer, show the students where those four constellations are on that cylinder. Next, show the ...
Galaxies - hwchemistry
... • At the greatest distances, astronomers must calibrate the total luminosity of the galaxies themselves. – For example, studies of nearby galaxies show that an average galaxy like Milky Way has a luminosity about 16 billion times the sun’s. – If astronomers see a similar galaxy far away, they can me ...
... • At the greatest distances, astronomers must calibrate the total luminosity of the galaxies themselves. – For example, studies of nearby galaxies show that an average galaxy like Milky Way has a luminosity about 16 billion times the sun’s. – If astronomers see a similar galaxy far away, they can me ...
Unfolding the Milky Way bulge - International Max Planck Research
... 5.8 The upper panel shows the inner ∼ ±2◦ region around the Galactic plane of our VVV extinction map. AKs values are based on Cardelli et al. (1989) extinction law. Part of this region was also covered by the DENIS survey, used in Schultheis et al. (1999) to build an extinction map shown in the lowe ...
... 5.8 The upper panel shows the inner ∼ ±2◦ region around the Galactic plane of our VVV extinction map. AKs values are based on Cardelli et al. (1989) extinction law. Part of this region was also covered by the DENIS survey, used in Schultheis et al. (1999) to build an extinction map shown in the lowe ...
The Lupus clouds - European Southern Observatory
... field covers the thick clouds containing HR 5999 and HR 6000 (the bright stars near the center of the bottom half of the field), clearly delineated against the backdrop of background stars. The Northeastern half of the field corresponds to less dense clouds also part of Lupus 3. A comparison with Fi ...
... field covers the thick clouds containing HR 5999 and HR 6000 (the bright stars near the center of the bottom half of the field), clearly delineated against the backdrop of background stars. The Northeastern half of the field corresponds to less dense clouds also part of Lupus 3. A comparison with Fi ...
Famous Comets - Mr. Hill`s Science Website
... Capture the cosmos > Comets > Dig deeper (cont'd) > Fast Facts: Comet Hale-Bopp ...
... Capture the cosmos > Comets > Dig deeper (cont'd) > Fast Facts: Comet Hale-Bopp ...
Characterization of the physical properties of the ROSETTA target
... mm-sized or larger particles (Agarwal 2007, and references therein). These dust grains have low emission speed (about m/s) and are little sensitive to solar radiation pressure, thus they remain close to the comet orbit for two or more revolutions around the Sun. They appear as a faint linear structu ...
... mm-sized or larger particles (Agarwal 2007, and references therein). These dust grains have low emission speed (about m/s) and are little sensitive to solar radiation pressure, thus they remain close to the comet orbit for two or more revolutions around the Sun. They appear as a faint linear structu ...
The most metal-poor galaxies
... have heavy element abundances 10−4 times that of the Sun (Cayrel 1996) while stars in the Galactic centre may be three times more metal rich than the Sun. On the other hand, the large ionised complexes in the ISM show a narrower range down to only 1/10 the solar value. Thus metallicity depends on wh ...
... have heavy element abundances 10−4 times that of the Sun (Cayrel 1996) while stars in the Galactic centre may be three times more metal rich than the Sun. On the other hand, the large ionised complexes in the ISM show a narrower range down to only 1/10 the solar value. Thus metallicity depends on wh ...
... concentrate on one important consequence: the buildup of dense central components that look like classical, i.e., merger-built bulges but that were made slowly by disks out of disk material. These are called pseudobulges. Our discussion updates a review by Kormendy (1993). The relative importance of ...
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 ...
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 ...
ROSAT Ian R. Stevens* and David K. Strickland*
... superimposed on the Digitized Sky Survey image. The X-ray contours are from the longer 6.2-ks observation only. As noted by Turner et al. (1993), there are several point sources in the vicinity of the nucleus of NGC 1365. In addition to a strong central point source there is also low-surface-brightn ...
... superimposed on the Digitized Sky Survey image. The X-ray contours are from the longer 6.2-ks observation only. As noted by Turner et al. (1993), there are several point sources in the vicinity of the nucleus of NGC 1365. In addition to a strong central point source there is also low-surface-brightn ...
2012 December Vol. 49 No 584
... call them, the ‘fuzzies’. I was indebted to Ian Bruce and Brian Colthorpe for looking after us as their observatories. However for several people present it was also their first chance to try their hand at observing a whole range of such objects and of considerable variation in difficulty for the vi ...
... call them, the ‘fuzzies’. I was indebted to Ian Bruce and Brian Colthorpe for looking after us as their observatories. However for several people present it was also their first chance to try their hand at observing a whole range of such objects and of considerable variation in difficulty for the vi ...
1 Globular Cluster Systems - McMaster Physics and Astronomy
... these heavily reddened clusters remained surprisingly poor, and even today there are still a few clusters with exceptionally high reddenings embedded deep in the Galactic bulge about which we know almost nothing (see the listings in Harris 1996a). However, progress over the years has been steady and ...
... these heavily reddened clusters remained surprisingly poor, and even today there are still a few clusters with exceptionally high reddenings embedded deep in the Galactic bulge about which we know almost nothing (see the listings in Harris 1996a). However, progress over the years has been steady and ...
An Atlas of Stellar Spectra
... sequence are not touched on; as a consequence, emphasis is placed on ``ordinary'' stars. These are the stars most important statistically and the only ones suitable for large-scale investigations of galactic structure. The plan of the Atlas can be stated as follows: a) To set up a classification sys ...
... sequence are not touched on; as a consequence, emphasis is placed on ``ordinary'' stars. These are the stars most important statistically and the only ones suitable for large-scale investigations of galactic structure. The plan of the Atlas can be stated as follows: a) To set up a classification sys ...
the fixed stars
... arbitrators, but exposes to cruel and severe trials. By the Kabalists this constellation is associated with the Hebrew letter Shin and the 22nd Tarot Trump, The Fool". (Robson). Rising: Cepheus will not engender dispositions inclined to sport. He fashions faces marked by a stern demeanour, and mould ...
... arbitrators, but exposes to cruel and severe trials. By the Kabalists this constellation is associated with the Hebrew letter Shin and the 22nd Tarot Trump, The Fool". (Robson). Rising: Cepheus will not engender dispositions inclined to sport. He fashions faces marked by a stern demeanour, and mould ...
Elliptical Galaxies
... relatively bright in the center but fading rapidly with increasing radius. Elliptical galaxies are found mostly in the denser regions of the universe, from rich clusters to small groups; truely isolated ellipticals being relatively rare. Figure 1 shows the central region of the Coma cluster which is ...
... relatively bright in the center but fading rapidly with increasing radius. Elliptical galaxies are found mostly in the denser regions of the universe, from rich clusters to small groups; truely isolated ellipticals being relatively rare. Figure 1 shows the central region of the Coma cluster which is ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.