Cosmological dynamics with non-minimally coupled scalar field and
... are detected for two galaxies down to a 3σ limiting emission-line flux of ∼ 10−17 erg s−1 cm−2 . This detection rate is consistent with a ∼ 50% false pair fraction at such angular separations (1 − 2 arcsec), and with recent claims that the star-formation rate (SFR) can differ by an order of magnitud ...
... are detected for two galaxies down to a 3σ limiting emission-line flux of ∼ 10−17 erg s−1 cm−2 . This detection rate is consistent with a ∼ 50% false pair fraction at such angular separations (1 − 2 arcsec), and with recent claims that the star-formation rate (SFR) can differ by an order of magnitud ...
A Study on Midrange Periodicity of Sunspot Number During Solar
... 11 year period. The possibility of a solar cycle was first noticed in 1843 by Samuel Schwabe after counting the number of sunspots present on the Sun over 17 years. He noticed that the number of sunspots visible at any one time was not a constant, but rose and fell gradually over time. The number of ...
... 11 year period. The possibility of a solar cycle was first noticed in 1843 by Samuel Schwabe after counting the number of sunspots present on the Sun over 17 years. He noticed that the number of sunspots visible at any one time was not a constant, but rose and fell gradually over time. The number of ...
INDIGO-KR_plancomm_pI_v2
... great value not only to the gravitational wave community, but to broader physics and astronomy research by launching an era of gravitational wave astronomy, including, the fundamental first direct detection of gravitational waves. As the southernmost member observatory of the global array of gravita ...
... great value not only to the gravitational wave community, but to broader physics and astronomy research by launching an era of gravitational wave astronomy, including, the fundamental first direct detection of gravitational waves. As the southernmost member observatory of the global array of gravita ...
ASTRONOMY AND ASTROPHYSICS Elemental abundances of
... 1990; Oke & Gunn 1983; Turnshek 1990). The quasars and the standard stars observed for flux calibration can be taken as point sources. Therefore, the light loss due to the slit width used is nearly identical especially because the seeing during the observations was quite constant at 1.00 5±0.00 5. F ...
... 1990; Oke & Gunn 1983; Turnshek 1990). The quasars and the standard stars observed for flux calibration can be taken as point sources. Therefore, the light loss due to the slit width used is nearly identical especially because the seeing during the observations was quite constant at 1.00 5±0.00 5. F ...
Who’s Afraid of a Stellar Superflare? Rachel Osten GSFC
... planetary systems can form around close binary stars ...
... planetary systems can form around close binary stars ...
INDIGO-KR_plancomm_pI_v3
... • Opportune time to a launch a promising field (GW astronomy) with high end technological spinoffs, well before it has obviously blossomed. Once in a generation opportunity to host an unique, path defining, international Experiment in India. • A GREAT opportunity but a very sharp deadline of 31 Mar ...
... • Opportune time to a launch a promising field (GW astronomy) with high end technological spinoffs, well before it has obviously blossomed. Once in a generation opportunity to host an unique, path defining, international Experiment in India. • A GREAT opportunity but a very sharp deadline of 31 Mar ...
sections 4-6 instructor notes
... likely to be larger than d given by the value of 1/π0. Corrections can be estimated for the amount of bias based upon the known values for π0 and ±σ. A significant improvement upon the general Lutz/Kelker corrections was made by Hanson (MNRAS, 186, 875, 1979). His technique makes use of proper motio ...
... likely to be larger than d given by the value of 1/π0. Corrections can be estimated for the amount of bias based upon the known values for π0 and ±σ. A significant improvement upon the general Lutz/Kelker corrections was made by Hanson (MNRAS, 186, 875, 1979). His technique makes use of proper motio ...
Two Small Pieces of Glass Teachers Guide
... The purpose of this guide is to integrate some of the information from the program into your classroom before and after your students view Two Small Pieces of Glass: The Amazing Telescope. We have provided information on how to electronically access lesson outlines and objectives, worksheets, demons ...
... The purpose of this guide is to integrate some of the information from the program into your classroom before and after your students view Two Small Pieces of Glass: The Amazing Telescope. We have provided information on how to electronically access lesson outlines and objectives, worksheets, demons ...
UK e-Science Booth at SC04 - National e
... • The overall feeling was that the stand was a success and that attending had been beneficial. • The demonstrators had all made good contacts and were grateful for the opportunity to demonstrate their work. • They also appreciated the chance to learn what is being done elsewhere by visiting the othe ...
... • The overall feeling was that the stand was a success and that attending had been beneficial. • The demonstrators had all made good contacts and were grateful for the opportunity to demonstrate their work. • They also appreciated the chance to learn what is being done elsewhere by visiting the othe ...
Methods of Determining Relative Age of Young Stellar Objects
... of known stars in the Jacoby Atlas in order to determine the spectral type and an estimate of star temperature. Because these are variable stars, published spectral class data were also obtained from the SIMBAD astronomical database for comparison. The spectra were analyzed for certain elements that ...
... of known stars in the Jacoby Atlas in order to determine the spectral type and an estimate of star temperature. Because these are variable stars, published spectral class data were also obtained from the SIMBAD astronomical database for comparison. The spectra were analyzed for certain elements that ...
Enhanced temperature regions in the polar zones of the Sun
... transformed to heliographic coordinates using current values for the solar parameters. The active areas at 8 mm wavelengh are located only a few thousand kilometers above the photosphere, so no corrections due to the height effect are necessary. Although ETR’s were seen closer to the poles, in pract ...
... transformed to heliographic coordinates using current values for the solar parameters. The active areas at 8 mm wavelengh are located only a few thousand kilometers above the photosphere, so no corrections due to the height effect are necessary. Although ETR’s were seen closer to the poles, in pract ...
IRIS observations of the solar transition region
... larger than the measured intensity of the background “spicules”—longer nearly radial features— of 15 DN/s, which is also apparent from visual inspection of Fig. 1. Although the detailed filling factor of either component is not well known (given the superposition at the limb and their limited visibi ...
... larger than the measured intensity of the background “spicules”—longer nearly radial features— of 15 DN/s, which is also apparent from visual inspection of Fig. 1. Although the detailed filling factor of either component is not well known (given the superposition at the limb and their limited visibi ...
Beyond the iron group: heavy metals in hot subdwarfs
... found, however, that diffusion alone cannot account for the large silicon underabundances, and that a competing particle transport mechanism, i.e. a weak stellar wind, must be present. The discovery of strong Ge, Sn and Pb resonance lines can be used to confirm this. Consider that Si, Ge, Sn and Pb ...
... found, however, that diffusion alone cannot account for the large silicon underabundances, and that a competing particle transport mechanism, i.e. a weak stellar wind, must be present. The discovery of strong Ge, Sn and Pb resonance lines can be used to confirm this. Consider that Si, Ge, Sn and Pb ...
Anna Frebel nucleosynthesis, stars + chemical evolution
... [Fe/H]~<-2.0 can be found at is crucial for understanding the formation of the elements! http://www.cfa.harvard.edu/~afrebel/abundances/abund.html (published in Frebel ‘10, review article on metal-poor stars) ...
... [Fe/H]~<-2.0 can be found at is crucial for understanding the formation of the elements! http://www.cfa.harvard.edu/~afrebel/abundances/abund.html (published in Frebel ‘10, review article on metal-poor stars) ...
India-based Neutrino Observatory
... Constraining long-range leptonic forces by introducing a matter-dependent term in the oscillation probability even in the absence of Ue3 , so that neutrinos and anti-neutrinos oscillate differently. Discrimination between oscillation of νµ to active ντ and sterile νs from up/down ratio in “muon-less ...
... Constraining long-range leptonic forces by introducing a matter-dependent term in the oscillation probability even in the absence of Ue3 , so that neutrinos and anti-neutrinos oscillate differently. Discrimination between oscillation of νµ to active ντ and sterile νs from up/down ratio in “muon-less ...
Beyond the iron group: Heavy metals in hot subdwarfs
... with reasonably accurate wavelengths are seen, however once again there are no oscillator strengths available in the literature. The strongest appears to be the line at 1189.95 Å, which is clearly present in the three hottest stars Feige 66, PG 1219+534 and Ton S 227, but weak in Feige 48 (see Fig. ...
... with reasonably accurate wavelengths are seen, however once again there are no oscillator strengths available in the literature. The strongest appears to be the line at 1189.95 Å, which is clearly present in the three hottest stars Feige 66, PG 1219+534 and Ton S 227, but weak in Feige 48 (see Fig. ...
Educator`s Guide - Ott Planetarium
... sun are blocked by our atmosphere; which is good for us because ultraviolet can be harmful to cause10 cm painful sunburns. Telescopes are for studying 100our m cells 10 m and1 m 1 cm 1 mm 100 µm 10 µm in1 space µm ...
... sun are blocked by our atmosphere; which is good for us because ultraviolet can be harmful to cause10 cm painful sunburns. Telescopes are for studying 100our m cells 10 m and1 m 1 cm 1 mm 100 µm 10 µm in1 space µm ...
Stellar Winds and Hydrodynamic Atmospheres of Stars
... star with 8 Msun on main sequence ends up with 1 Msun 7 Msun re-cycled to ISM ejection of Planetary Nebula at tip of AGB ...
... star with 8 Msun on main sequence ends up with 1 Msun 7 Msun re-cycled to ISM ejection of Planetary Nebula at tip of AGB ...
Magnetic susceptibility, magnetization, magnetic moment and
... Abstract. Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional funct ...
... Abstract. Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional funct ...
Zhou et al Ks band Secondary Eclipses 2014
... to explore the detection thresholds of the AAT+IRIS2 facility. We find that the optimal photometric precision is achieved for targets brighter than Kmag = 9, for which eclipses as shallow as 0.05 per cent are detectable at >5σ significance. Key words: planets and satellites: atmospheres – planets an ...
... to explore the detection thresholds of the AAT+IRIS2 facility. We find that the optimal photometric precision is achieved for targets brighter than Kmag = 9, for which eclipses as shallow as 0.05 per cent are detectable at >5σ significance. Key words: planets and satellites: atmospheres – planets an ...
Commentary on the Liquid Metallic Hydrogen Model of the Sun
... When the Sun is quiet, much of its interior is constantly being degassed through the action of the fast solar winds exiting at the poles. During this time, degassing is restricted over equatorial regions. Eventually, the Sun becomes active. This change in state is directly associated with degassing ...
... When the Sun is quiet, much of its interior is constantly being degassed through the action of the fast solar winds exiting at the poles. During this time, degassing is restricted over equatorial regions. Eventually, the Sun becomes active. This change in state is directly associated with degassing ...
Photometric transit search for planets around cool stars from the
... the complex processes of planet formation and evolution. With the primary goal of reaching sensitivity to short-period planets with (minimum) masses lower than the mass of Neptune, a number of dedicated radial-velocity surveys have been targeting low-mass stars (e.g., Endl et al. 2006; Zechmeister e ...
... the complex processes of planet formation and evolution. With the primary goal of reaching sensitivity to short-period planets with (minimum) masses lower than the mass of Neptune, a number of dedicated radial-velocity surveys have been targeting low-mass stars (e.g., Endl et al. 2006; Zechmeister e ...
On the origin of stars with and without planets
... either on the evolutionary stage of the star or on its age3 . In Fig. 1 we plot the T c slope against the stellar age. The plot and Table 1 clearly show that the correlation with age is quite significant and confirms the result obtained for the surface gravity: old stars are more depleted in refract ...
... either on the evolutionary stage of the star or on its age3 . In Fig. 1 we plot the T c slope against the stellar age. The plot and Table 1 clearly show that the correlation with age is quite significant and confirms the result obtained for the surface gravity: old stars are more depleted in refract ...
Astronomy 255 / Physics 295 Research Methods in Astrophysics Professor Marla Geha
... potential of the Milky Way, specifically its mass profile and shape to better than 20% accuracy. The modeling yields accurate estimates of Pal 5’s mass and distance, independent of other methods. The requested imaging data in combination with the above available radial velocity data will boost the a ...
... potential of the Milky Way, specifically its mass profile and shape to better than 20% accuracy. The modeling yields accurate estimates of Pal 5’s mass and distance, independent of other methods. The requested imaging data in combination with the above available radial velocity data will boost the a ...
Indian Institute of Astrophysics
The Indian Institute of Astrophysics (IIA), with its headquarters in Bangalore (Karnataka state), India, is a premier national institute of India for the study of and research into topics pertaining to astronomy, astrophysics and related subjects.The Institute has a network of laboratories and observatories located in various places in India, including Kodaikanal (the Kodaikanal Solar Observatory), Kavalur (the Vainu Bappu Observatory), Gauribidanur, Hanle (the Indian Astronomical Observatory) and Hosakote.