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Hα star formation rates in massive galaxies at z∼ 1
Weiner, Benjamin J.; Conselice, Christopher J.; Bauer, Amanda E. +4 more
We present a near-infrared spectroscopic study of a stellar mass selected sample of galaxies at z∼ 1 utilizing the Long-slit Intermediate Resolution Infrared Spectrograph multi-object spectrograph on the William Herschel Telescope. We detect continuum, and the Hα line for our sample, which is one of the better direct tracers of star formation in e…
Dependence of kinematics on the age of stars in the solar neighborhood
Gontcharov, G. A.
The variations of kinematic parameters with age are considered for a sample of 15 402 thin-disk O-F stars with accurate α, δ, µ, and π > 3 mas from the Hipparcos catalogue and radial velocities from the PCRV catalogue. The ages have been calculated from the positions of the stars on the Hertzsprung-Russell diagram relative to the isochrones fro…
Geometry of the 20 November 2003 magnetic cloud
Park, Sung-Hong; Cho, Kyung-Suk; Kim, Yeon-Han +2 more
This study is an attempt to find a coherent interpretation of the link between the 20 November 2003 magnetic cloud (MC) and its solar source. Most previous studies agree on the orientation of the MC, but the orientation is nearly perpendicular to the axis of the post-eruption arcade (PEA) or the orientation of the neutral line in the solar source …
Spectral comparison of weak short bursts to the persistent X-rays from the magnetar 1E 1547.0-5408 in its 2009 outburst
Sakamoto, T.; Enoto, T.; Makishima, K. +1 more
In 2009 January, the 2.1-s anomalous X-ray pulsar 1E 1547.0-5408 evoked intense burst activity. A follow-up Suzaku observation on January 28 recorded enhanced persistent emission in both soft and hard X-rays. Through a reanalysis of the same Suzaku data, 18 short bursts were identified in the X-ray events recorded by the Hard X-ray Detector (HXD) …
Black-hole-Bulge Relationship of Post-starburst Quasars at z ~ 0.3
Canalizo, Gabriela; Brotherton, Michael S.; Cales, Sabrina L. +2 more
The M BH-σ* relation has been studied extensively for local galaxies, but to date there have been scarce few direct measurements of stellar velocity dispersions for systems beyond the local universe. We investigate black hole and host galaxy properties of six "post-starburst quasars" (PSQs) at z ~ 0.3. Spectra of these object…
Direct wind measurements from November 2007 in Venus' upper atmosphere using ground-based heterodyne spectroscopy of CO 2 at 10 µm wavelength
Sornig, M.; Sonnabend, G.; Kroetz, P. +2 more
Between November 23 and 28, 2007, the Cologne Tuneable Heterodyne Infrared Spectrometer THIS was installed at the McMath-Pierce Solar Telescope (Kitt Peak, Arizona, USA) to determine zonal wind velocities and to estimate the subsolar-to-antisolar flow. We investigate dynamics in the upper atmosphere of Venus by measuring the Doppler shift of fully…
Transiting exoplanets from the CoRoT space mission . XIX. CoRoT-23b: a dense hot Jupiter on an eccentric orbit
Mazeh, T.; Aigrain, S.; Alonso, R. +40 more
We report the detection of CoRoT-23b, a hot Jupiter transiting in front of its host star with a period of 3.6314 ± 0.0001 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite, combined with spectroscopic radial velocity (RV) measurements. A photometric search for possible background eclipsing binaries conduc…
A Strongly Lensed Massive Ultracompact Quiescent Galaxy at z ~ 2.4 in the COSMOS/UltraVISTA Field
Franx, Marijn; Muzzin, Adam; Labbé, Ivo +14 more
We report the discovery of a massive ultracompact quiescent galaxy that has been strongly lensed into multiple images by a foreground galaxy at z = 0.960. This system was serendipitously discovered as a set of extremely Ks -bright high-redshift galaxies with red J - Ks colors using new data from the UltraVISTA YJHKs
Statistical model of electron pitch angle diffusion in the outer radiation belt
Krasnoselskikh, V.; Breuillard, H.; Agapitov, O. +2 more
We calculated the bounce averaged electron pitch angle diffusion coefficients ? using the statistical characteristics of lower band chorus activity collected by the Cluster mission from 2001-2009. Nine years of Cluster observations provide the distributions of the θ angle between wave vectors and the background magnetic field; and the distribution…
The X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy ESO 113-G010
Mehdipour, M.; Page, M. J.; Branduardi-Raymont, G.
We present the first analysis of the X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy