Astrophysics Pristine CNO abundances from Magellanic Cloud B stars
... Large Magellanic Cloud (LMC). Apart from H ii regions, unevolved OB-type stars are currently the only accessible source of present-day CNO abundances for the MCs not altered by stellar evolution. Using UVES on the VLT, we obtained spectra of sufficient resolution (R = 20 000) and signal-to-noise (S/ ...
... Large Magellanic Cloud (LMC). Apart from H ii regions, unevolved OB-type stars are currently the only accessible source of present-day CNO abundances for the MCs not altered by stellar evolution. Using UVES on the VLT, we obtained spectra of sufficient resolution (R = 20 000) and signal-to-noise (S/ ...
Colloquial Jakartan Indonesian
... changing positions on their flat maps by using compass, sextant, chronometer, almanacs and various mathematical tables. When Europeans first ventured into the Pacific they had to grapple with the almost inconceivable notion that Pacific Islanders could navigate their canoes successfully over distanc ...
... changing positions on their flat maps by using compass, sextant, chronometer, almanacs and various mathematical tables. When Europeans first ventured into the Pacific they had to grapple with the almost inconceivable notion that Pacific Islanders could navigate their canoes successfully over distanc ...
Chromospherically young, kinematically old stars
... investigate the chromospheric activity in single stars. Due to this, the division of these surveys into two classes, of active and inactive stars, corresponds closely to an age segregation. This was very well demonstrated by Soderblom (1990, see also Jeffries & Jewell 1993), who studied the kinemati ...
... investigate the chromospheric activity in single stars. Due to this, the division of these surveys into two classes, of active and inactive stars, corresponds closely to an age segregation. This was very well demonstrated by Soderblom (1990, see also Jeffries & Jewell 1993), who studied the kinemati ...
Marking Scheme of Observational Sessions
... constellation of “Orion”) in his/her constellation mapping drawing. But drawing Orion nebula IS NOT ACCEPTABLE ! Maximum Minus marks that can be given for each report is (-2 ) Observers should make a Relative apparent magnitude scale and show it on at least one observation report. IF it missing (– 3 ...
... constellation of “Orion”) in his/her constellation mapping drawing. But drawing Orion nebula IS NOT ACCEPTABLE ! Maximum Minus marks that can be given for each report is (-2 ) Observers should make a Relative apparent magnitude scale and show it on at least one observation report. IF it missing (– 3 ...
Have You Seen Canopus Tonight?
... From the continental USA, only those in the deep south, who know when and where to look, can view this heavenly star. For example, in North Florida, Canopus rises halfway between southeast and south, barely reaches seven to eight degrees (about one hand-width) above south before quickly descending t ...
... From the continental USA, only those in the deep south, who know when and where to look, can view this heavenly star. For example, in North Florida, Canopus rises halfway between southeast and south, barely reaches seven to eight degrees (about one hand-width) above south before quickly descending t ...
Science East Meteor Radiant Worksheet finished
... Meteors: Pieces of this dust or debris that enter the atmosphere and burns up. These are also known as ‘shooting stars’ or ‘falling stars’. Most burn up and never land at the surface. Fireball: Is simply a very bright meteor, generated by a larger chunk or rock. Fireballs can make it to the ground, ...
... Meteors: Pieces of this dust or debris that enter the atmosphere and burns up. These are also known as ‘shooting stars’ or ‘falling stars’. Most burn up and never land at the surface. Fireball: Is simply a very bright meteor, generated by a larger chunk or rock. Fireballs can make it to the ground, ...
Lithium abundances along the red giant branch: FLAMES
... quality flags “A” in the 2MASS JHK photometry and targets that had another source within 3 that was not fainter by at least 2.m 0 in the J-band than the target itself. This selection scheme provides a bias against close visual pairs in our sample. Applying all those criteria yielded 514 targets fo ...
... quality flags “A” in the 2MASS JHK photometry and targets that had another source within 3 that was not fainter by at least 2.m 0 in the J-band than the target itself. This selection scheme provides a bias against close visual pairs in our sample. Applying all those criteria yielded 514 targets fo ...
to - NexStar Resource Site
... Viewing Jupiter from one night to the next will always provide the observer with a different image as the gaseous clouds swirl around this mighty planet. When on the Earth side, Jupiter’s famous Great Red Spot is hard to miss. It was first discovered some 300 years ago and is a storm system so large ...
... Viewing Jupiter from one night to the next will always provide the observer with a different image as the gaseous clouds swirl around this mighty planet. When on the Earth side, Jupiter’s famous Great Red Spot is hard to miss. It was first discovered some 300 years ago and is a storm system so large ...
Absolute magnitudes and kinematics of barium
... have been evaluated from the data of Table 1. The estimated average sample ages are: 7 108 ± 108 yrs for group 1, 2 109 ± 109 yrs for group 3 and 5 109 ± 109 yrs for group 2. The young age of group 1 is incompatible with a possible evolutionary link between this group and the other two. Moreover, th ...
... have been evaluated from the data of Table 1. The estimated average sample ages are: 7 108 ± 108 yrs for group 1, 2 109 ± 109 yrs for group 3 and 5 109 ± 109 yrs for group 2. The young age of group 1 is incompatible with a possible evolutionary link between this group and the other two. Moreover, th ...
Astronomical Picture of the Day
... figure out the cause of unusual jumbles of stars, gas, and dust like NGC 1316. A preliminary inspection indicates that NGC 1316 is an enormous elliptical galaxy that includes dark dust lanes usually found in a spiral. The above image taken by the Hubble Space Telescope shows details, however, that h ...
... figure out the cause of unusual jumbles of stars, gas, and dust like NGC 1316. A preliminary inspection indicates that NGC 1316 is an enormous elliptical galaxy that includes dark dust lanes usually found in a spiral. The above image taken by the Hubble Space Telescope shows details, however, that h ...
Late Summer Messier Objects
... place to our own galaxy. Lying on my back on a warm summer night, I can see far more detail ...
... place to our own galaxy. Lying on my back on a warm summer night, I can see far more detail ...
How to Build an Astrolabe
... Arcturus (α Boötis): part of the constellation of Boötes. Its name comes from the ancient Greek Αρκτουρος (Arktourus), meaning "guardian of the bear". This name refers to its proximity to Ursa Major and Ursa Minor (the constellations of the Great and Little Bears). Betelgeuse (α Orionis): a red gian ...
... Arcturus (α Boötis): part of the constellation of Boötes. Its name comes from the ancient Greek Αρκτουρος (Arktourus), meaning "guardian of the bear". This name refers to its proximity to Ursa Major and Ursa Minor (the constellations of the Great and Little Bears). Betelgeuse (α Orionis): a red gian ...
How to Build an Astrolabe - St John`s College, Cambridge
... Arcturus (α Boötis): part of the constellation of Boötes. Its name comes from the ancient Greek Αρκτουρος (Arktourus), meaning "guardian of the bear". This name refers to its proximity to Ursa Major and Ursa Minor (the constellations of the Great and Little Bears). Betelgeuse (α Orionis): a red gian ...
... Arcturus (α Boötis): part of the constellation of Boötes. Its name comes from the ancient Greek Αρκτουρος (Arktourus), meaning "guardian of the bear". This name refers to its proximity to Ursa Major and Ursa Minor (the constellations of the Great and Little Bears). Betelgeuse (α Orionis): a red gian ...
... 3. THE RR LYRAE STARS IN M15 In Clement’s (2002) data base of variables stars, a total of 158 variable stars are known, from which approximately 104 are RR Lyrae type stars. In this work, 33 known RR Lyrae stars, identified in Figs. 1 and 2 and listed in Table 4, have been studied. For all the stars ...
Constellation Paper - Matt Hape`s Portfolio
... extend from the galaxy. Its calculated distance away from Earth is about 32 million light-years away. This is a very unique galaxy because it has the second lowest surface brightness out of all of the Messier objects. M74 has a right ascension of 01:36.7 and a declination of +15:47. From our point o ...
... extend from the galaxy. Its calculated distance away from Earth is about 32 million light-years away. This is a very unique galaxy because it has the second lowest surface brightness out of all of the Messier objects. M74 has a right ascension of 01:36.7 and a declination of +15:47. From our point o ...
Sample pages 1 PDF
... of complex features, including star clusters, reflection nebulae, and clouds of gas and dust. The Hubble Telescope has also shown evidence of protoplanetary discs, known as proplyds, meaning that at least some of the young stars in the Orion Nebula are well on the way to forming their own solar syst ...
... of complex features, including star clusters, reflection nebulae, and clouds of gas and dust. The Hubble Telescope has also shown evidence of protoplanetary discs, known as proplyds, meaning that at least some of the young stars in the Orion Nebula are well on the way to forming their own solar syst ...
Gemini - www.BahaiStudies.net
... To look at Gemini is to look away from the Milky Way; as a result, there are comparatively few deep-sky objects of note. The Eskimo Nebula and Medusa Nebula, Messier object M35, and Geminga are those that attract the most attention. The Eskimo and Medusa nebulae are both planetary nebulae, the one a ...
... To look at Gemini is to look away from the Milky Way; as a result, there are comparatively few deep-sky objects of note. The Eskimo Nebula and Medusa Nebula, Messier object M35, and Geminga are those that attract the most attention. The Eskimo and Medusa nebulae are both planetary nebulae, the one a ...
1. The catalogue structure
... We have partially processed this enormous body of material. First of all, it is very useful to indicate the location of the constellations mentioned in Ptolemy’s star catalogue geometrically. Let us use a modern map that specifies constellation boundaries for this end. In fig. 2.1. these boundaries ...
... We have partially processed this enormous body of material. First of all, it is very useful to indicate the location of the constellations mentioned in Ptolemy’s star catalogue geometrically. Let us use a modern map that specifies constellation boundaries for this end. In fig. 2.1. these boundaries ...
Small star patterns for telescopes and binoculars Demelza Ramakers
... chevron. It’s located just above the galaxy NGC 2217 in Canis Major, a bit right of the back paw. The asterism is pretty big, and the stars in the chevron have a magnitude of 7 to 10, which makes this a beautiful binocular object. Through telescopes you will see the color of the stars (yellow-orange ...
... chevron. It’s located just above the galaxy NGC 2217 in Canis Major, a bit right of the back paw. The asterism is pretty big, and the stars in the chevron have a magnitude of 7 to 10, which makes this a beautiful binocular object. Through telescopes you will see the color of the stars (yellow-orange ...
Observations of Jets and Outflows from Young Stars
... an initial state. Shocks also drive chemistry, thereby altering the chemical composition of the impacted media. Outflows may play a fundamental role in sculpting and disrupting their parent clouds. They may play a role in determining final stellar masses and the shape of the Initial Mass Function. O ...
... an initial state. Shocks also drive chemistry, thereby altering the chemical composition of the impacted media. Outflows may play a fundamental role in sculpting and disrupting their parent clouds. They may play a role in determining final stellar masses and the shape of the Initial Mass Function. O ...
Aries The Ram - Maverick`s E-portfolio
... were enthralled by a bright star residing in the constellation of Aries known as Hamal. Sumerians believed that Hamal, which means the lamb, was one of the stars in the Scimitar. They believed that the Scimitar was a celestial weapon that protected against the Seven Diabolic Spirits of the Storm[6]. ...
... were enthralled by a bright star residing in the constellation of Aries known as Hamal. Sumerians believed that Hamal, which means the lamb, was one of the stars in the Scimitar. They believed that the Scimitar was a celestial weapon that protected against the Seven Diabolic Spirits of the Storm[6]. ...
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN
... DR8 spectra within the on- and off-stream fields, respectively. We also show subsets of the spectra with properties expected for the PSS. The subscripts on the magnitudes g0 and (g − r)0 mean that these magnitudes have been extinction-corrected based on the Schlegel et al. (1998) maps (using the ext ...
... DR8 spectra within the on- and off-stream fields, respectively. We also show subsets of the spectra with properties expected for the PSS. The subscripts on the magnitudes g0 and (g − r)0 mean that these magnitudes have been extinction-corrected based on the Schlegel et al. (1998) maps (using the ext ...
Nebulae.The Lagoon and Dumbbell Nebulae
... a remnant of a dying star which is approximately 2 times smaller than the Sun. The star is hot and blue with temperature of 85000K (Most of these stars usually turn into red giants. They lose their mass by ejection of the outer gas layers. These layers expand in space, forming a temporary wrap aroun ...
... a remnant of a dying star which is approximately 2 times smaller than the Sun. The star is hot and blue with temperature of 85000K (Most of these stars usually turn into red giants. They lose their mass by ejection of the outer gas layers. These layers expand in space, forming a temporary wrap aroun ...
Cassiopeia Kelly Pearce
... within the boundary of the constellation. These observable objects include both New General Catalogue objects and Messier objects. New General Catalogue is a catalogue of recorded deep sky objects and is referred to as NGC (SEDS, The Messier Catalog, 2010). The first of these objects, NGC 457, is al ...
... within the boundary of the constellation. These observable objects include both New General Catalogue objects and Messier objects. New General Catalogue is a catalogue of recorded deep sky objects and is referred to as NGC (SEDS, The Messier Catalog, 2010). The first of these objects, NGC 457, is al ...
The Milky Way thin disk structure as revealed by stars and young
... small (Moitinho 2001), and star clusters can be detected to very distant regions (Carraro et al. 2010), because the young disk is significantly warped (Moitinho et al 2006). A major break-through is reported in Vázquez et al. (2008), where for the very first time, distances to a large sample of young ...
... small (Moitinho 2001), and star clusters can be detected to very distant regions (Carraro et al. 2010), because the young disk is significantly warped (Moitinho et al 2006). A major break-through is reported in Vázquez et al. (2008), where for the very first time, distances to a large sample of young ...
Orion (constellation)
Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. It was named after Orion, a hunter in Greek mythology. Its brightest stars are Rigel (Beta Orionis) and Betelgeuse (Alpha Orionis), a blue-white and a red supergiant, respectively.