Enhanced lithium depletion in Sun-like stars with orbiting planets.
... 451 stars in the HARPS high precision (better than 1 m/s) radial velocity exoplanet survey11 spanning the effective temperature range between 4900 and 6500 K. These are unevolved, slowly rotating non-active stars from a CORALIE catalogue11. These stars have been monitored with high precision spectro ...
... 451 stars in the HARPS high precision (better than 1 m/s) radial velocity exoplanet survey11 spanning the effective temperature range between 4900 and 6500 K. These are unevolved, slowly rotating non-active stars from a CORALIE catalogue11. These stars have been monitored with high precision spectro ...
New Worlds Ahead: The Discovery of Exoplanets
... perpendicular to this plane, and the direction of the Sun rotation is the same as the planets revolution around the Sun. These observations gave birth to the Solar nebula theory, which was proposed by Kant and Laplace more that two hundred years ago, but, although correct, it has been for decades th ...
... perpendicular to this plane, and the direction of the Sun rotation is the same as the planets revolution around the Sun. These observations gave birth to the Solar nebula theory, which was proposed by Kant and Laplace more that two hundred years ago, but, although correct, it has been for decades th ...
Chapter 1 Introduction
... In order to achieve higher resolution we need to do interferometric observations rather than the more traditional single-dish observations. The technique is to link several telescopes together and letting the signal from each antenna interfere with the signal from each of the other antennas, while m ...
... In order to achieve higher resolution we need to do interferometric observations rather than the more traditional single-dish observations. The technique is to link several telescopes together and letting the signal from each antenna interfere with the signal from each of the other antennas, while m ...
binary stars instructor notes
... consisting of two stars, both classified as spectral type G5 V with magnitudes V = 6.26 and V = 6.36, having an orbital period of P = 25.0 years and a semi-major axis a = 0".67. Assume bolometric corrections of BC = –0.05 for G5 V stars and that the system is close enough to be unreddened by ...
... consisting of two stars, both classified as spectral type G5 V with magnitudes V = 6.26 and V = 6.36, having an orbital period of P = 25.0 years and a semi-major axis a = 0".67. Assume bolometric corrections of BC = –0.05 for G5 V stars and that the system is close enough to be unreddened by ...
How Marius Was Right and Galileo Was Wrong Even Though
... these ideas will require further discussion and explanation. Lastly, he concedes to Galileo that the stars shine by their own light -- they are distinct in appearance from the planets (being notably more intense in brilliance).13 ...
... these ideas will require further discussion and explanation. Lastly, he concedes to Galileo that the stars shine by their own light -- they are distinct in appearance from the planets (being notably more intense in brilliance).13 ...
Direct Imaging and Spectroscopy of a Candidate Companion Below
... We present near-infrared high-contrast imaging photometry and integral field spectroscopy of ROXs 42B, a binary M0 member of the 1–3 Myr-old ρ Ophiuchus star-forming region, from data collected over 7 years. Each data set reveals a faint companion – ROXs 42Bb – located ∼ 1.16′′ (rproj ≈ 150 AU ) fro ...
... We present near-infrared high-contrast imaging photometry and integral field spectroscopy of ROXs 42B, a binary M0 member of the 1–3 Myr-old ρ Ophiuchus star-forming region, from data collected over 7 years. Each data set reveals a faint companion – ROXs 42Bb – located ∼ 1.16′′ (rproj ≈ 150 AU ) fro ...
3D Tour of the Universe Template
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
the solar neighborhood. xi. the trigonometric parallax of scr
... target are reproduced in Table 1. These show that the object is very red; Henry et al. (2004) classified the target as an M8.5 dwarf. 2. OBSERVATIONAL DATA AND REDUCTION Luckily there is a wealth of astrometric data available for this object, partly because it lies in the overlap region between the ...
... target are reproduced in Table 1. These show that the object is very red; Henry et al. (2004) classified the target as an M8.5 dwarf. 2. OBSERVATIONAL DATA AND REDUCTION Luckily there is a wealth of astrometric data available for this object, partly because it lies in the overlap region between the ...
Primas
... RaDo of two lines’ central depths can be very sensiDve to temperature, if the lines are chosen to have different sensiDviDes to T Ideally, the LDR is close to 1 and the lines should not be to ...
... RaDo of two lines’ central depths can be very sensiDve to temperature, if the lines are chosen to have different sensiDviDes to T Ideally, the LDR is close to 1 and the lines should not be to ...
Homework #9 (Ch. 21)
... For full credit, always show your work and explain how you got your answer in full, complete sentences on a separate sheet of paper. Be careful about units! Please CIRCLE or put a box around your final answer if it is numerical. If you wish, you may discuss the questions with friends, but please tur ...
... For full credit, always show your work and explain how you got your answer in full, complete sentences on a separate sheet of paper. Be careful about units! Please CIRCLE or put a box around your final answer if it is numerical. If you wish, you may discuss the questions with friends, but please tur ...
Earthfiles.com Science | WWII Was An ET Battle
... fighters that chased jets and the silver aerial discs that could move miles in seconds, make 90-degree turns and stop in mid-air motionless without sound. Those were NOT human technologies and according to documents and whistleblowers, FDR knew it. Secretary of War George Marshall knew it. Winston C ...
... fighters that chased jets and the silver aerial discs that could move miles in seconds, make 90-degree turns and stop in mid-air motionless without sound. Those were NOT human technologies and according to documents and whistleblowers, FDR knew it. Secretary of War George Marshall knew it. Winston C ...
Distance determination for RAVE stars using stellar models
... ated. The right panel Fig. 1 shows isochrones of similar chemical composition and can be compared to the stellar tracks shown on the left panel. All stars on the 0.01 Gyr isochrone are still on the main sequence. For older isochrones we can clearly see the main sequence turnoff points, the point at ...
... ated. The right panel Fig. 1 shows isochrones of similar chemical composition and can be compared to the stellar tracks shown on the left panel. All stars on the 0.01 Gyr isochrone are still on the main sequence. For older isochrones we can clearly see the main sequence turnoff points, the point at ...
Heliacal Rising of Canopus in Indian Astronomy
... for different stars. For a star risen above the eastern horizon, for its visibility there should be a corresponding amount of darkness in the sky which means that the Sun should be correspondingly below the horizon. If the altitude of the Sun is denoted by h, and that of the star by H, both in degre ...
... for different stars. For a star risen above the eastern horizon, for its visibility there should be a corresponding amount of darkness in the sky which means that the Sun should be correspondingly below the horizon. If the altitude of the Sun is denoted by h, and that of the star by H, both in degre ...
Lecture2.2014_v4 - UCO/Lick Observatory
... • A celestial body that (a) is in orbit around the Sun (b) has sufficient mass for its self-gravity to overcome rigid body forces, so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. ...
... • A celestial body that (a) is in orbit around the Sun (b) has sufficient mass for its self-gravity to overcome rigid body forces, so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. ...
Lecture 2: A Modern View of the Universe
... difference between summer and winter is that the Earth is closer to the Sun in summer. Which of the following is the best fact you can use to convince your friend that his/her explanation must be wrong? Why? a) days are shorter in winter than in summer b) if you are above the Arctic Circle in winter ...
... difference between summer and winter is that the Earth is closer to the Sun in summer. Which of the following is the best fact you can use to convince your friend that his/her explanation must be wrong? Why? a) days are shorter in winter than in summer b) if you are above the Arctic Circle in winter ...
SGR and AXP – are they magnetars?
... the layer, but should not fundamentally change the values given in the figure. From A New Look at Anomalous X-Ray Pulsars. G. S Bisnovatyi-Kogan and N. R. Ikhsanov Astronomy Reports, 2014, Vol. 58, No. 4, pp. 217–227. ...
... the layer, but should not fundamentally change the values given in the figure. From A New Look at Anomalous X-Ray Pulsars. G. S Bisnovatyi-Kogan and N. R. Ikhsanov Astronomy Reports, 2014, Vol. 58, No. 4, pp. 217–227. ...
Brightness and Flux Density
... that is scarcely visible to the eye. Betelgeuse appears "brighter" than most other stars because its flux is higher, and that only because the solid angle subtended by Betelgeuse is large. If a source is much larger than the point-source response, its spectral brightness at any position on the sourc ...
... that is scarcely visible to the eye. Betelgeuse appears "brighter" than most other stars because its flux is higher, and that only because the solid angle subtended by Betelgeuse is large. If a source is much larger than the point-source response, its spectral brightness at any position on the sourc ...
Celebrating Astronomy: The Life of a Star
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas ...
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas ...
NSDL/NSTA Web Seminar: Celebrating Astronomy: A Star`s Story
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas • Speed of cloud rotation • Other factors… Type your responses in the chat ...
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas • Speed of cloud rotation • Other factors… Type your responses in the chat ...
Undiscovered Worlds educators guide
... observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting l ...
... observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting l ...
Oct 2011 - Bays Mountain Park
... visible 'til just before dawn. Ol' Jove is found between the constellations of Aries and the more elusive Cetus in the east as darkness falls. At magnitude -2.9 it is unmistakable to the naked eye in the fairly blank area between the Ram and the Sea Monster. Jupiter is especially nice this month sin ...
... visible 'til just before dawn. Ol' Jove is found between the constellations of Aries and the more elusive Cetus in the east as darkness falls. At magnitude -2.9 it is unmistakable to the naked eye in the fairly blank area between the Ram and the Sea Monster. Jupiter is especially nice this month sin ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.