First Census of Galaxies Near Cosmic Dawn The Night Sky
... First Census of Galaxies Near Cosmic Dawn ...
... First Census of Galaxies Near Cosmic Dawn ...
Document
... 1.11 & 1.12: Be prepared to discuss the Vocabulary terms and Review Questions 2, 3, 6, 7, 8 on page 10. 3.1 through 3.3: Be prepared to discuss the Vocabulary terms and the six Review Questions on page 35. 3.4 through 3.6.2: Be prepared to discuss the Vocabulary terms and the Review Questions ...
... 1.11 & 1.12: Be prepared to discuss the Vocabulary terms and Review Questions 2, 3, 6, 7, 8 on page 10. 3.1 through 3.3: Be prepared to discuss the Vocabulary terms and the six Review Questions on page 35. 3.4 through 3.6.2: Be prepared to discuss the Vocabulary terms and the Review Questions ...
The Milky Way disk
... quadrant ((Vázquez et al., 2008)), and the detailed distribution of HII regions in the first Galactic quadrant (Anderson et al., 2012). To illustrate how embarrassing the actual situation is, I will focus only on the Local arm, the closest to us, the one which the Sun is located in. (Morgan et al., ...
... quadrant ((Vázquez et al., 2008)), and the detailed distribution of HII regions in the first Galactic quadrant (Anderson et al., 2012). To illustrate how embarrassing the actual situation is, I will focus only on the Local arm, the closest to us, the one which the Sun is located in. (Morgan et al., ...
Stars and Galaxies - Red Hook Central Schools
... http://hubblesite.org/newscenter/archive/releases/star%20cluster/globular/2007/18/image/a/format/web/results/50/ ...
... http://hubblesite.org/newscenter/archive/releases/star%20cluster/globular/2007/18/image/a/format/web/results/50/ ...
... Stellar and Gas Content of Galaxies • Other items of note: – Ellipticals have a large range of sizes from globular cluster sizes to 100 times the mass of the Milky Way – Census of galaxies nearby: Most are dim dwarf E and dwarf Irr sparsely populated with stars – Census of distant galaxies: In clus ...
Baryons at Low Densities: The Stellar Halos around Galaxies
... survey, which has traced the surface brightness profile out to ~ 180 kpc, finding a similar density profile to the PAndAS survey. The spectroscopic identification of more than 1500 M31 halo stars in the SPLASH survey has resulted in determination of the metallicity gradient out to large radii. The s ...
... survey, which has traced the surface brightness profile out to ~ 180 kpc, finding a similar density profile to the PAndAS survey. The spectroscopic identification of more than 1500 M31 halo stars in the SPLASH survey has resulted in determination of the metallicity gradient out to large radii. The s ...
Astronomy
... • Some oceans are 25-30 degrees celsius all year round • Greenhouse effect also counters this ...
... • Some oceans are 25-30 degrees celsius all year round • Greenhouse effect also counters this ...
Using time to measure distance - AS-A2
... sky. They were both in the south at midnight, which means that the Earth was directly between them and the Sun. This is called an ‘opposition’. It also means that the two planets were both at the same time at their closest to the Earth. At this time Jupiter was the brightest object in the night sky ...
... sky. They were both in the south at midnight, which means that the Earth was directly between them and the Sun. This is called an ‘opposition’. It also means that the two planets were both at the same time at their closest to the Earth. At this time Jupiter was the brightest object in the night sky ...
Stellar Spectroscopy
... surface of the star, but most of what is known about stars is determined from the many spectral lines seen in their spectrum. A close inspection of a star’s spectrum will reveal many absorption lines, and for some stars, emission lines as well. These spectral lines can be used to determine an incred ...
... surface of the star, but most of what is known about stars is determined from the many spectral lines seen in their spectrum. A close inspection of a star’s spectrum will reveal many absorption lines, and for some stars, emission lines as well. These spectral lines can be used to determine an incred ...
Curtis/Shapley Debate – 1920 - Tufts Institute of Cosmology
... a series of solid papers on good astronomical results - many times on the properties of spiral nebulae. He was a `rock of clear thinking' to all that knew him. He was a hard worker usually taking the conservative view - frequently skeptical of anything new until proven to his exacting standards. By ...
... a series of solid papers on good astronomical results - many times on the properties of spiral nebulae. He was a `rock of clear thinking' to all that knew him. He was a hard worker usually taking the conservative view - frequently skeptical of anything new until proven to his exacting standards. By ...
Luminosity profiles and sizes of massive star clusters in NGC 7252
... exceeding 105 M and are, despite the 64 Mpc distance to the galaxy, (partly) resolved on the HST images. Effective radii can be measured down to ∼2.5 pc, and the largest clusters have Reff approaching 20 pc. The median Reff of our sample clusters is ∼6–7 pc, which is larger than typical radii of YM ...
... exceeding 105 M and are, despite the 64 Mpc distance to the galaxy, (partly) resolved on the HST images. Effective radii can be measured down to ∼2.5 pc, and the largest clusters have Reff approaching 20 pc. The median Reff of our sample clusters is ∼6–7 pc, which is larger than typical radii of YM ...
12-1 - Piscataway High School
... one with another and decide which was emitting more light and which less. Of course, the stars are scattered at different distances, and you can’t shove them around to line them up for comparison. If, however, you know the distance to a star, you can use the inverse square relation to calculate the ...
... one with another and decide which was emitting more light and which less. Of course, the stars are scattered at different distances, and you can’t shove them around to line them up for comparison. If, however, you know the distance to a star, you can use the inverse square relation to calculate the ...
Binary Star Formation Part 2
... Therefore stars must almost always be born in multiple systems and then multiplicity declines after ~300,000 years. ...
... Therefore stars must almost always be born in multiple systems and then multiplicity declines after ~300,000 years. ...
SciPoster_Jan2009
... complex is one of the most prominent areas of star formation for low to intermediate mass stars. Padgett et al. (2008) recently presented Spitzer/MIPS data over a 14.4 square degree map of the entire Ophiuchus molecular cloud, finding more than 300 YSO candidates. Could LDN 425 be part of this “exte ...
... complex is one of the most prominent areas of star formation for low to intermediate mass stars. Padgett et al. (2008) recently presented Spitzer/MIPS data over a 14.4 square degree map of the entire Ophiuchus molecular cloud, finding more than 300 YSO candidates. Could LDN 425 be part of this “exte ...
New Mass Loss Measurements from Astrospheric Lyα Absorption
... those in this high-activity regime. Thus, the location of y Boo is shown in Figure 3b in order to infer what the solar wind might have been like at times earlier than t p 0.7 Gyr. The history of the solar wind is not only of interest to solar/ stellar astronomers but is also important for planetary ...
... those in this high-activity regime. Thus, the location of y Boo is shown in Figure 3b in order to infer what the solar wind might have been like at times earlier than t p 0.7 Gyr. The history of the solar wind is not only of interest to solar/ stellar astronomers but is also important for planetary ...
USRA - MSU Solar Physics
... Gamma Ray Burst Prompt Emission Simulations Gamma ray bursts (GRBs) are the most energetic phenomena in the universe with the ability to outshine an entire galaxy one-thousand fold! As indicators of the deaths of the most massive stars, they provide insight into the creation of blackholes from stell ...
... Gamma Ray Burst Prompt Emission Simulations Gamma ray bursts (GRBs) are the most energetic phenomena in the universe with the ability to outshine an entire galaxy one-thousand fold! As indicators of the deaths of the most massive stars, they provide insight into the creation of blackholes from stell ...
Exploring the Universe
... • All stars are made up of hot, glowing gases • Stars can appear red, blue or yellow based on surface temperature – Hottest stars are blue, coolest are red – Hertzspurg-Russel diagram classifies stars • 90° of stars are called the main sequence • Other stars include red giants, supergiants, and dwar ...
... • All stars are made up of hot, glowing gases • Stars can appear red, blue or yellow based on surface temperature – Hottest stars are blue, coolest are red – Hertzspurg-Russel diagram classifies stars • 90° of stars are called the main sequence • Other stars include red giants, supergiants, and dwar ...
Finnish Centre for Astronomy with ESO
... The year 2014 marked the 5th year of operation for FINCA, administratively a Special Unit of the University of Turku, and funded by the Ministry of Education and Culture, and by the participating universities (Aalto, Helsinki, Oulu and Turku). The highest decision-making body is the Board, chaired b ...
... The year 2014 marked the 5th year of operation for FINCA, administratively a Special Unit of the University of Turku, and funded by the Ministry of Education and Culture, and by the participating universities (Aalto, Helsinki, Oulu and Turku). The highest decision-making body is the Board, chaired b ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.