Camelopardalis-Better-Know-A-Constellation
... possesses about 100 emission regions as well as 27 variable stars. Larger instruments will reveal many of these regions that seem to take on likeliness to M33. Three supernovae have been spotted in this galaxy, one in 1954 (SN 1954J) with the others, a half a century later in 2002 (SN 2002kg) and in ...
... possesses about 100 emission regions as well as 27 variable stars. Larger instruments will reveal many of these regions that seem to take on likeliness to M33. Three supernovae have been spotted in this galaxy, one in 1954 (SN 1954J) with the others, a half a century later in 2002 (SN 2002kg) and in ...
Chapter J2
... Passage 1 Quasars are some of the most puzzling objects in the sky. If viewed through an optical telescope, a quasar appears as a small, dim star. Quasars are the most distant objects that have been observed from Earth. But many quasars are hundreds of times brighter than the brightest galaxy. Becau ...
... Passage 1 Quasars are some of the most puzzling objects in the sky. If viewed through an optical telescope, a quasar appears as a small, dim star. Quasars are the most distant objects that have been observed from Earth. But many quasars are hundreds of times brighter than the brightest galaxy. Becau ...
The Milky Way as a galaxy
... at the location of the Sun (see Fig. 2.2). The Galactic plane is the plane of the Galactic disk, i.e., it is parallel to the band of the Milky Way. The two Galactic coordinates ` and b are angular coordinates on the sphere. Here, b denotes the Galactic latitude, the angular distance of a source from ...
... at the location of the Sun (see Fig. 2.2). The Galactic plane is the plane of the Galactic disk, i.e., it is parallel to the band of the Milky Way. The two Galactic coordinates ` and b are angular coordinates on the sphere. Here, b denotes the Galactic latitude, the angular distance of a source from ...
GALAXIES 626
... Kinematics and structure of the thick disk rotational lag ~ 30 km/s near the sun and increases by about 30 km s-1 kpc-1 with height above the plane velocity dispersion in (U,V,W) = (46, 50, 35) km/s radial scale length = 3.5 to 4.5 kpc : uncertain scale height from star counts = 800 to 1200 pc (thi ...
... Kinematics and structure of the thick disk rotational lag ~ 30 km/s near the sun and increases by about 30 km s-1 kpc-1 with height above the plane velocity dispersion in (U,V,W) = (46, 50, 35) km/s radial scale length = 3.5 to 4.5 kpc : uncertain scale height from star counts = 800 to 1200 pc (thi ...
Red supergiants around the obscured open cluster Stephenson 2
... Context. Several clusters of red supergiants have been discovered in a small region of the Milky Way close to the base of the ScutumCrux Arm and the tip of the Long Bar. Population synthesis models indicate that they must be very massive to harbour so many supergiants. Amongst these clusters, Stephe ...
... Context. Several clusters of red supergiants have been discovered in a small region of the Milky Way close to the base of the ScutumCrux Arm and the tip of the Long Bar. Population synthesis models indicate that they must be very massive to harbour so many supergiants. Amongst these clusters, Stephe ...
New brown dwarfs and giant planets
... Davy Kirkpatrick & Pat Lowrance (IPAC), Adam Burgasser (UCLA)) Aim: find all dwarfs later than M4 within 20 parsecs 1. 2MASS/NLTT cross-referencing: (m(r) – K) p 2. Deep van Biesbroeck survey for wide cpm companions 3. 2MASS-direct: (J-K) p 4. 2MASS/POSS II: (I-J) p ...
... Davy Kirkpatrick & Pat Lowrance (IPAC), Adam Burgasser (UCLA)) Aim: find all dwarfs later than M4 within 20 parsecs 1. 2MASS/NLTT cross-referencing: (m(r) – K) p 2. Deep van Biesbroeck survey for wide cpm companions 3. 2MASS-direct: (J-K) p 4. 2MASS/POSS II: (I-J) p ...
Gamma Ray Bursts
... 7 weeks later the paper published in Nature Italian paper on GRB+X published 2 months later, because the English required a lot of corrections ...
... 7 weeks later the paper published in Nature Italian paper on GRB+X published 2 months later, because the English required a lot of corrections ...
The Kuiper Belt Explored by Serendipitous Stellar Occultations
... atmosphere with a typical vertical resolution of a few kilometers. Furthermore, depending on the quality and completeness of the dataset, this technique has sometimes been applied to determine local density variations, atmospheric composition, the presence of aerosol content, zonal wind speed, and t ...
... atmosphere with a typical vertical resolution of a few kilometers. Furthermore, depending on the quality and completeness of the dataset, this technique has sometimes been applied to determine local density variations, atmospheric composition, the presence of aerosol content, zonal wind speed, and t ...
The Circumstellar Environments of Young Stars at AU Scales
... tion for many types of YSOs (e.g., T Tauri, Herbig Ae/Be, FU Orionis). The interferometer data can also can be compared to predictions of specific physical models and this exercise has allowed to rule out certain classes of models, and provided crucial constraints to models that can be made to repro ...
... tion for many types of YSOs (e.g., T Tauri, Herbig Ae/Be, FU Orionis). The interferometer data can also can be compared to predictions of specific physical models and this exercise has allowed to rule out certain classes of models, and provided crucial constraints to models that can be made to repro ...
UV, IR, and mm Studies of CO Surrounding the Red Supergiant α
... The absence of flux in the narrow range between 27 and 30 km s−1 and also between 32 − 48km s−1 is puzzling. While the former may result from a non-uniform shell, the later may be an artifact of the interferometry. The onset of the S1 and S2 shells are seen as point sources in the image-channel maps ...
... The absence of flux in the narrow range between 27 and 30 km s−1 and also between 32 − 48km s−1 is puzzling. While the former may result from a non-uniform shell, the later may be an artifact of the interferometry. The onset of the S1 and S2 shells are seen as point sources in the image-channel maps ...
Mid-infrared Properties of Seyfert Galaxies: the IRAS 12um Sample
... the more important of which is… SHAO - Oct 2010 ...
... the more important of which is… SHAO - Oct 2010 ...
to - NexStar Resource Site
... eye. Personally, and perhaps due to older eyes, I can only spot it with averted vision if it is really dark. This is an easy object for any optical instrument from the smallest binoculars to the largest of telescopes. Through an 8” or larger scope and with a good imagination its grandeur and size ca ...
... eye. Personally, and perhaps due to older eyes, I can only spot it with averted vision if it is really dark. This is an easy object for any optical instrument from the smallest binoculars to the largest of telescopes. Through an 8” or larger scope and with a good imagination its grandeur and size ca ...
Plotting the Rotation Curve of M31
... Answer: large collections of stars. They vary in their morphology and stellar composition i.e. ellipticals are red and contain older stars than spirals which are predominantly blue/white in colour and younger. What is a spectrum? Answer: a ‘fingerprint’ of an object made of light. The spectrum of vis ...
... Answer: large collections of stars. They vary in their morphology and stellar composition i.e. ellipticals are red and contain older stars than spirals which are predominantly blue/white in colour and younger. What is a spectrum? Answer: a ‘fingerprint’ of an object made of light. The spectrum of vis ...
The quest for the size of the universe in early relativistic cosmology
... the difficulty of obtaining values of the gravitational potentials (identified by the symbols gµν ) which at infinity were invariant for all transformations. Einstein disregarded local non-homogeneous distributions of matter (like stars and planets), and introduced in his model an extremely small de ...
... the difficulty of obtaining values of the gravitational potentials (identified by the symbols gµν ) which at infinity were invariant for all transformations. Einstein disregarded local non-homogeneous distributions of matter (like stars and planets), and introduced in his model an extremely small de ...
GammaRay Bursts, the Strongest Explosions in the Universe.
... GRBs could be extra galactic, making them much more powerful than if they were produced by relativity “local” Galactic objects. Note that a source at distant galaxy is million times further than a source in our own Galaxy. This would make an extragalactic bursts 1012 ...
... GRBs could be extra galactic, making them much more powerful than if they were produced by relativity “local” Galactic objects. Note that a source at distant galaxy is million times further than a source in our own Galaxy. This would make an extragalactic bursts 1012 ...
Diapositive 1
... • Our products are freely available in our dedicated web site: http://wwwas.oats.inaf.it/aidawp5 – WP5 has been awarded the STELLA award – WP5 can be reached also from the site of the project Hands-On Universe Massimo Ramella, WPMTL, INAF ...
... • Our products are freely available in our dedicated web site: http://wwwas.oats.inaf.it/aidawp5 – WP5 has been awarded the STELLA award – WP5 can be reached also from the site of the project Hands-On Universe Massimo Ramella, WPMTL, INAF ...
Long-term monitoring of the short period SU UMa
... recorded normal outburst in V844 Her. We also examined superhump period changes during 2002 May and 2006 April-May superoutbursts, both of which showed increasing superhump period over the course of the plateau stage. In order to examine the long-term behavior of V844 Her, we analyzed archival data ...
... recorded normal outburst in V844 Her. We also examined superhump period changes during 2002 May and 2006 April-May superoutbursts, both of which showed increasing superhump period over the course of the plateau stage. In order to examine the long-term behavior of V844 Her, we analyzed archival data ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.