Blocking Starlight Much Closer to Home 2: This Year`s
... magnitude star than to find a ring around Pluto or to discover a moon. Anyway, we have the light curve of an occultation by that 15th magnitude star, which was the typical brightness of our occultation stars that we were observing anyway. We are about to submit a paper to the Astronomical Journal a ...
... magnitude star than to find a ring around Pluto or to discover a moon. Anyway, we have the light curve of an occultation by that 15th magnitude star, which was the typical brightness of our occultation stars that we were observing anyway. We are about to submit a paper to the Astronomical Journal a ...
astronomy (astr)
... Gen Ed: PL, QI. Grading status: Letter grade Same as: PHYS 63H. ASTR 89. First-Year Seminar: Special Topics. 3 Credits. Special topics course content will vary each semester. Repeat rules: May be repeated for credit; may be repeated in the same term for different topics; 6 total credits. 2 total com ...
... Gen Ed: PL, QI. Grading status: Letter grade Same as: PHYS 63H. ASTR 89. First-Year Seminar: Special Topics. 3 Credits. Special topics course content will vary each semester. Repeat rules: May be repeated for credit; may be repeated in the same term for different topics; 6 total credits. 2 total com ...
- MNASSA Page
... a misty cloud on our doorstep displays a soft, even, round glow, very smooth, that fades away into the field. The ignited star that florescence the nebula is relatively easily to see, and gives the impression of riding along on top of this glow. The magnitude 12.2 star on the southern end of the ne ...
... a misty cloud on our doorstep displays a soft, even, round glow, very smooth, that fades away into the field. The ignited star that florescence the nebula is relatively easily to see, and gives the impression of riding along on top of this glow. The magnitude 12.2 star on the southern end of the ne ...
Astronomy Astrophysics − Astrophysical parameters of the peculiar X-ray transient
... not dominated by the orbital motion, and provide an upper limit on the semi-amplitude for the optical component Kopt < ∼ 11± 6 km s . Large variations in the depth and shape of photospheric lines suggest the presence of strong pulsations, which may be the main cause of the radial velocity changes. V ...
... not dominated by the orbital motion, and provide an upper limit on the semi-amplitude for the optical component Kopt < ∼ 11± 6 km s . Large variations in the depth and shape of photospheric lines suggest the presence of strong pulsations, which may be the main cause of the radial velocity changes. V ...
Sample pages 1 PDF
... interest of Mercury’s passages across the Sun’s face has not inspired scientific expeditions to distant lands where bones of extinct birds might be found. These Mercurian events lack the romance of the Venus transits! Nevertheless, odd things have been reported from time to time. In fact (undoubtedl ...
... interest of Mercury’s passages across the Sun’s face has not inspired scientific expeditions to distant lands where bones of extinct birds might be found. These Mercurian events lack the romance of the Venus transits! Nevertheless, odd things have been reported from time to time. In fact (undoubtedl ...
Possible climates on terrestrial exoplanets
... in our galaxy. A large fraction of the stars are likely to harbour rocky planets [1–4]. These discoveries have also profoundly changed our vision of the formation, structure and composition of low-mass planets: while it has been long thought, mostly based on the observations of our own Solar System, ...
... in our galaxy. A large fraction of the stars are likely to harbour rocky planets [1–4]. These discoveries have also profoundly changed our vision of the formation, structure and composition of low-mass planets: while it has been long thought, mostly based on the observations of our own Solar System, ...
Full PDF - Royal Society Publishing
... in our galaxy. A large fraction of the stars are likely to harbour rocky planets [1–4]. These discoveries have also profoundly changed our vision of the formation, structure and composition of low-mass planets: while it has been long thought, mostly based on the observations of our own Solar System, ...
... in our galaxy. A large fraction of the stars are likely to harbour rocky planets [1–4]. These discoveries have also profoundly changed our vision of the formation, structure and composition of low-mass planets: while it has been long thought, mostly based on the observations of our own Solar System, ...
Document
... Structure of Outflows Jet (~ continuous flow of emission) close to source Knots with “empty space” further out Only in the past 10 years that we have Realised that outflows can extend for many parsecs 1pc ~ 3 X 1013 km ~ 3.26 light years ~ 206265 AU Can outflows be larger than their parent cloud? ...
... Structure of Outflows Jet (~ continuous flow of emission) close to source Knots with “empty space” further out Only in the past 10 years that we have Realised that outflows can extend for many parsecs 1pc ~ 3 X 1013 km ~ 3.26 light years ~ 206265 AU Can outflows be larger than their parent cloud? ...
Planetary Nebula
... now unleashing a stream of ultraviolet radiation that is making the cast-off material glow. This object is an example of a planetary nebula, so-named because many of them have a round appearance resembling that of a planet when viewed through a small telescope. NGC 6302 lies within our Milky Way gal ...
... now unleashing a stream of ultraviolet radiation that is making the cast-off material glow. This object is an example of a planetary nebula, so-named because many of them have a round appearance resembling that of a planet when viewed through a small telescope. NGC 6302 lies within our Milky Way gal ...
Teaching STEM through Big Telescopes
... know black holes exist because x-ray telescopes see the material around the edges of them. • When considering the challenges of launching space telescopes forces such as gravity and friction can be investigated. Many of the large ground-based telescopes are in locations which are susceptible to ear ...
... know black holes exist because x-ray telescopes see the material around the edges of them. • When considering the challenges of launching space telescopes forces such as gravity and friction can be investigated. Many of the large ground-based telescopes are in locations which are susceptible to ear ...
Dynamical properties of a large young disk galaxy at z=2.03⋆
... galaxies are smaller than local galaxies at a fixed rest-frame Bmagnitude or rotation velocity, consistent with hierarchical models. A brightening with redshift of disk galaxies at fixed rotation speeds was also detected by Barden et al. (2003). However, Simard et al. (1999) and Ziegler et al. (2002 ...
... galaxies are smaller than local galaxies at a fixed rest-frame Bmagnitude or rotation velocity, consistent with hierarchical models. A brightening with redshift of disk galaxies at fixed rotation speeds was also detected by Barden et al. (2003). However, Simard et al. (1999) and Ziegler et al. (2002 ...
When we look at a neighboring galaxy (such as M31, the
... supergiants from foreground stars—and that is through measuring the radial velocities of the stars. M31 is barreling towards us at -300 km/sec (about -670,000 miles/hr), where the minus sign serves as a reminder that the velocity is towards us. (Truth be told: most of this apparent motion is actuall ...
... supergiants from foreground stars—and that is through measuring the radial velocities of the stars. M31 is barreling towards us at -300 km/sec (about -670,000 miles/hr), where the minus sign serves as a reminder that the velocity is towards us. (Truth be told: most of this apparent motion is actuall ...
Archaeoastronomical Study of the Main Pyramids of Giza
... be as low as 3’ (Herrmann, 1975; Gribbin & Gribbin, 1996). Any single measurement of stellar position (astrometry), performed with unaided eye, can never have an uncertainty less than this resolution power, and in general the former is much greater than the latter. For this reason it is very reasona ...
... be as low as 3’ (Herrmann, 1975; Gribbin & Gribbin, 1996). Any single measurement of stellar position (astrometry), performed with unaided eye, can never have an uncertainty less than this resolution power, and in general the former is much greater than the latter. For this reason it is very reasona ...
A terrestrial planet candidate in a temperate orbit around
... luminosity of 0.15 per cent of that of the Sun, a measured radius of 14 per cent of the radius of the Sun2 and a mass of about 12 per cent of the mass of the Sun. Although Proxima is considered a moderately active star, its rotation period is about 83 days (ref. 3) and its quiescent activity levels ...
... luminosity of 0.15 per cent of that of the Sun, a measured radius of 14 per cent of the radius of the Sun2 and a mass of about 12 per cent of the mass of the Sun. Although Proxima is considered a moderately active star, its rotation period is about 83 days (ref. 3) and its quiescent activity levels ...
A Practical Guide to Exoplanet Observing
... The following are several best practices for capturing exoplanet transits that should result in a better fit of the data collected: 1. Image scale: The image scale (i.e., arc-seconds per pixel) of the imaging system, after any binning of the CCD camera is considered, should be such that the full wid ...
... The following are several best practices for capturing exoplanet transits that should result in a better fit of the data collected: 1. Image scale: The image scale (i.e., arc-seconds per pixel) of the imaging system, after any binning of the CCD camera is considered, should be such that the full wid ...
Barium and europium abundances in cool dwarf stars and
... Ba abundance consist of 88% and 12%, respectively, according to Cameron (1982), 87% and 13% according to Käppeler et al. (1989), and 81% and 19% according to the most recent data of Arlandini et al. (1999). The solar europium mostly originated from the r-process: 91% according to Cameron (1982) and ...
... Ba abundance consist of 88% and 12%, respectively, according to Cameron (1982), 87% and 13% according to Käppeler et al. (1989), and 81% and 19% according to the most recent data of Arlandini et al. (1999). The solar europium mostly originated from the r-process: 91% according to Cameron (1982) and ...
INTERSTELLAR MedLab
... Reflection – dust clouds that reflect (scatter) a star’s light to us Dark – high densities of dust and gas that redden or extinct the light from the stars located behind the cloud. These are also where molecules are likely to be found. During the course of this laboratory exercise, you will study th ...
... Reflection – dust clouds that reflect (scatter) a star’s light to us Dark – high densities of dust and gas that redden or extinct the light from the stars located behind the cloud. These are also where molecules are likely to be found. During the course of this laboratory exercise, you will study th ...
Spectroscopy and Spectrophotometry
... • Slit Size and Resolu@on are implicitly set by the other parameters of the spectroscope. • Spectra are linear. To u@lize the CCD area effec@vely it is necessary to use an echelle spectrograph or to do mul@‐D (long‐slit/IFS) or mul@‐object spectroscopy. • Mul@‐object spectroscopy can be done ...
... • Slit Size and Resolu@on are implicitly set by the other parameters of the spectroscope. • Spectra are linear. To u@lize the CCD area effec@vely it is necessary to use an echelle spectrograph or to do mul@‐D (long‐slit/IFS) or mul@‐object spectroscopy. • Mul@‐object spectroscopy can be done ...
ASTRONOMY AND ASTROPHYSICS Barium and europium
... halo stars are of the r-process origin. Much observational efforts were invested in testing this idea. For extremely metalpoor stars with metallicities [Fe/H] ≤ −2.4 McWilliam (1998) has derived an average [Eu/Ba] = 0.69, consistent with pure rprocess nucleosynthesis provided that the data of Arland ...
... halo stars are of the r-process origin. Much observational efforts were invested in testing this idea. For extremely metalpoor stars with metallicities [Fe/H] ≤ −2.4 McWilliam (1998) has derived an average [Eu/Ba] = 0.69, consistent with pure rprocess nucleosynthesis provided that the data of Arland ...
