The Milky Way Galaxy
... Center of Milky Way Galaxy Apparently, there is an enormous black hole at the center of the galaxy, which is the source of these phenomena An accretion disk surrounding the black hole emits enormous amounts of radiation Observations on three stars that are orbiting the core region at a distance ran ...
... Center of Milky Way Galaxy Apparently, there is an enormous black hole at the center of the galaxy, which is the source of these phenomena An accretion disk surrounding the black hole emits enormous amounts of radiation Observations on three stars that are orbiting the core region at a distance ran ...
An interesting nebular object in LDN 288
... a. HH 100 (see Fig.5a). It is situated near the well-known cone-like cometary nebula NGC 6729. There are two jets: one is a straight jet while the second one is spiral. b. SNO 35 [3] (see Fig.5b). This object (a in Fig.5b) has a spiral jet, at the end of which there is a condensation (b in Fig.5b). ...
... a. HH 100 (see Fig.5a). It is situated near the well-known cone-like cometary nebula NGC 6729. There are two jets: one is a straight jet while the second one is spiral. b. SNO 35 [3] (see Fig.5b). This object (a in Fig.5b) has a spiral jet, at the end of which there is a condensation (b in Fig.5b). ...
Climbing the Distance Ladder
... Rung #2: We find the distance to relatively nearby stars by measuring their parallax. ...
... Rung #2: We find the distance to relatively nearby stars by measuring their parallax. ...
File - Mr. Gray`s Class
... What blocks most of the light from our galaxy? What enables us to "See" these parts of space? ...
... What blocks most of the light from our galaxy? What enables us to "See" these parts of space? ...
the magellanic clouds newsletter - Keele University Astrophysics
... square degrees that have been monitored for eight years during the third phase of the OGLE survey. This is the largest set of such variables containing 6138 objects, of which 777 are contact and 5361 non-contact binaries. The estimated completeness of this sample is around 82%. We analyze the statis ...
... square degrees that have been monitored for eight years during the third phase of the OGLE survey. This is the largest set of such variables containing 6138 objects, of which 777 are contact and 5361 non-contact binaries. The estimated completeness of this sample is around 82%. We analyze the statis ...
Chapter 1: Introduction to Galaxies File - QMplus
... result of this continuing star formation. Spiral arms are apparent in the discs, defined by young, luminous stars and by H II regions. Spiral galaxies have a central bulge component containing mostly old stars. These bulges superficially resemble small elliptical galaxies. The disc and bulge are emb ...
... result of this continuing star formation. Spiral arms are apparent in the discs, defined by young, luminous stars and by H II regions. Spiral galaxies have a central bulge component containing mostly old stars. These bulges superficially resemble small elliptical galaxies. The disc and bulge are emb ...
There are 88 constellations in the sky around the Earth. 12 are the
... Queen, Pasiphaë, to fall in love with it. In another myth, Theseus of Athens goes to Crete and slays the dreadful Minotaur, which was reported to be a man with a bull's head that could breathe fire. Six wives (Pleiades cluster) ate wild onions that gave them skunk breath. The Husbands (Hyades clust ...
... Queen, Pasiphaë, to fall in love with it. In another myth, Theseus of Athens goes to Crete and slays the dreadful Minotaur, which was reported to be a man with a bull's head that could breathe fire. Six wives (Pleiades cluster) ate wild onions that gave them skunk breath. The Husbands (Hyades clust ...
Stars III The Hertzsprung
... luminous than the other, we can be sure that the a) more luminous star will have the longer lifetime b) less luminous star is the more massive c) more luminous star is the more massive d) more luminous star will have the redder color ...
... luminous than the other, we can be sure that the a) more luminous star will have the longer lifetime b) less luminous star is the more massive c) more luminous star is the more massive d) more luminous star will have the redder color ...
The classification of stellar spectra
... the same trend is observed in Globular Clusters! (i.e., for stars at the same distance) 47 Tucanae Observer’s HR diagram ...
... the same trend is observed in Globular Clusters! (i.e., for stars at the same distance) 47 Tucanae Observer’s HR diagram ...
Absolute magnitude of type Ia supernovae
... times of our sun’s, we can find it from fairly far distance. It rarely occurs once in a hundred years at a galaxy, but there are many galaxies in the Universe, therefore by observing everywhere, a supernova can be found somewhere. Supernova has the type. The type of a supernova can be determined thr ...
... times of our sun’s, we can find it from fairly far distance. It rarely occurs once in a hundred years at a galaxy, but there are many galaxies in the Universe, therefore by observing everywhere, a supernova can be found somewhere. Supernova has the type. The type of a supernova can be determined thr ...
PDF format
... What is the significance of the main sequence? What are giants, supergiants, and white dwarfs? Why do the properties of some stars vary? ...
... What is the significance of the main sequence? What are giants, supergiants, and white dwarfs? Why do the properties of some stars vary? ...
What kind of stuff
... • Such high energy radiation is NOT produced by cold old stars, implying that very young stars (10 million years old) are present. • They also contain vast amounts of gas and dust ...
... • Such high energy radiation is NOT produced by cold old stars, implying that very young stars (10 million years old) are present. • They also contain vast amounts of gas and dust ...
hwk01ans
... If we switch to the normal definition of i , then i arccos 0.6 = 53° = 90° 37°. Anyone who noticed this glitch and mentioned it will get a little extra credit. (d) This binary star system is at a distance of 15 pc from us. Use your result in part (b) to calculate the true linear value of a expre ...
... If we switch to the normal definition of i , then i arccos 0.6 = 53° = 90° 37°. Anyone who noticed this glitch and mentioned it will get a little extra credit. (d) This binary star system is at a distance of 15 pc from us. Use your result in part (b) to calculate the true linear value of a expre ...
Lecture2 - UCSB Physics
... • Such high energy radiation is NOT produced by cold old stars, implying that very young stars (10 million years old) are present. • They also contain vast amounts of gas and dust ...
... • Such high energy radiation is NOT produced by cold old stars, implying that very young stars (10 million years old) are present. • They also contain vast amounts of gas and dust ...
Star Finder
... (looks like a soup dipper with three stars in the “handle” and four stars in the “cup” portion) can be found near the pole(brass pin). Find it and note that capital letters are used to identify an asterism but the letters are not as bold in white as constellation names. The font is also a bit differ ...
... (looks like a soup dipper with three stars in the “handle” and four stars in the “cup” portion) can be found near the pole(brass pin). Find it and note that capital letters are used to identify an asterism but the letters are not as bold in white as constellation names. The font is also a bit differ ...
Constituents of the Milky Way
... For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen, helium, and one other element (lit ...
... For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen, helium, and one other element (lit ...
2013. CCAT. All Rights Reserved.
... X-Spec: a Multi-Object Wideband Spectrograph for CCAT: Concept and Technology Development C.M. Bradford for the X-Spec study team We are developing X-Spec, a multi-object wide-band direct-detection spectrometer for CCAT. X-Spec is designed for rapid full-band (195-510 GHz), moderate resolution (R~70 ...
... X-Spec: a Multi-Object Wideband Spectrograph for CCAT: Concept and Technology Development C.M. Bradford for the X-Spec study team We are developing X-Spec, a multi-object wide-band direct-detection spectrometer for CCAT. X-Spec is designed for rapid full-band (195-510 GHz), moderate resolution (R~70 ...
Chapter 26: Stars, Galaxies, and the Universe Stars
... Stars are made mostly of hydrogen and helium. These are both very lightweight gases. However, there is so much hydrogen and helium in a star that the weight of these gases is enormous. In the center of a star, the pressure is great enough to heat the gases and cause nuclear fusion reactions. In a nu ...
... Stars are made mostly of hydrogen and helium. These are both very lightweight gases. However, there is so much hydrogen and helium in a star that the weight of these gases is enormous. In the center of a star, the pressure is great enough to heat the gases and cause nuclear fusion reactions. In a nu ...
Document
... mass density of the universe has roughly doubled since z ~ 1…Intriguingly, the integrated stellar mass of blue galaxies with young stars has not significantly changed since z ~ 1…instead, the growth of the total stellar mass density is dominated by the growth of the total mass in the largely passive ...
... mass density of the universe has roughly doubled since z ~ 1…Intriguingly, the integrated stellar mass of blue galaxies with young stars has not significantly changed since z ~ 1…instead, the growth of the total stellar mass density is dominated by the growth of the total mass in the largely passive ...
ch19
... • X rays are observed from hot gas above and below the Milky Way's disk. © 2014 Pearson Education, Inc. ...
... • X rays are observed from hot gas above and below the Milky Way's disk. © 2014 Pearson Education, Inc. ...
Chandra Observation of Pulsar Wind Nebula
... Materials ejected by the binary system during its evolution? The mass donor is suggested to be very similar to the Sun but a slightly evolved, it can not contribute to the cloud during its lifetime. The planetary nebula surrounding the exploded white dwarf could be a source of the cloud materia ...
... Materials ejected by the binary system during its evolution? The mass donor is suggested to be very similar to the Sun but a slightly evolved, it can not contribute to the cloud during its lifetime. The planetary nebula surrounding the exploded white dwarf could be a source of the cloud materia ...
Name - CLC Charter School
... large transfer of matter and energy, there is a very different kind of star left. This star is called a spinning neutron star. Neutron stars produce radio waves in a steady stream or in random bursts. But if a star is massive enough, it can leave behind something more. For this to happen though, the ...
... large transfer of matter and energy, there is a very different kind of star left. This star is called a spinning neutron star. Neutron stars produce radio waves in a steady stream or in random bursts. But if a star is massive enough, it can leave behind something more. For this to happen though, the ...
SW - Calculating Magnitudes
... Here, ‘intensity’, also knowns as ‘counts’, refers to the amount of light that is emitted from the object and received by the CCD (see ‘Photometry in Astronomy’ worksheet). However, it’s a bit of an archaic system in that the brighter an object, the lower its apparent magnitude value. Objects that a ...
... Here, ‘intensity’, also knowns as ‘counts’, refers to the amount of light that is emitted from the object and received by the CCD (see ‘Photometry in Astronomy’ worksheet). However, it’s a bit of an archaic system in that the brighter an object, the lower its apparent magnitude value. Objects that a ...
Hubble`s Constant - Scientific Research Publishing
... Looking for any cluster of galaxies, as the Virgo cluster, which is the nearest rich cluster of galaxies, and use one of the galaxies as a measured unit in order to obtain the distances of other extragalactic clusters of galaxies. In this way, the Astronomers G. Abell and J. Eastmand compared the Vi ...
... Looking for any cluster of galaxies, as the Virgo cluster, which is the nearest rich cluster of galaxies, and use one of the galaxies as a measured unit in order to obtain the distances of other extragalactic clusters of galaxies. In this way, the Astronomers G. Abell and J. Eastmand compared the Vi ...
what are stars made of?
... Cooler stars are yellow, orange and red Yellow, orange and red stars have cooler surface temperatures than blue or white stars. The hottest of the yellow stars has a surface temperature of about 7500°C. Orange stars have a surface temperature of between 3500°C and 5000°C. Red stars are the coolest, ...
... Cooler stars are yellow, orange and red Yellow, orange and red stars have cooler surface temperatures than blue or white stars. The hottest of the yellow stars has a surface temperature of about 7500°C. Orange stars have a surface temperature of between 3500°C and 5000°C. Red stars are the coolest, ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.