Search Publications
Physical Properties of Lyα Emitters at z ~ 0.3 from UV-to-FIR Measurements
Berta, S.; Magnelli, B.; Lutz, D. +25 more
The analysis of the physical properties of low-redshift Lyα emitters (LAEs) can provide clues in the study of their high-redshift analogs. At z ~ 0.3, LAEs are bright enough to be detected over almost the entire electromagnetic spectrum and it is possible to carry out a more precise and complete study than at higher redshifts. In this work, we exa…
Transiting exoplanets from the CoRoT space mission Resolving the nature of transit candidates for the LRa03 and SRa03 fields
Mazeh, T.; Aigrain, S.; Alonso, R. +47 more
CoRoT is a space telescope which aims at studying internal structure of stars and detecting extrasolar planets. We present here a list of transits detected in the light curves of stars observed by CoRoT in two fields in the anti-center direction: the LRa03 one observed during 148 days from 3 October 2009 to 1 March 2010 followed by the SRa03 one f…
Aperture Photometry Tool Versus SExtractor for Noncrowded Fields
Gorjian, Varoujan; Law, Nicholas M.; Grillmair, Carl +28 more
Outputs from new software program Aperture Photometry Tool (APT) are compared with similar outputs from SExtractor for sources extracted from R-band optical images acquired by the Palomar Transient Factory (PTF), infrared mosaics constructed from Spitzer Space Telescope images, and a processed visible/near-infrared image from the Hubble Legacy Arc…
Radiation-driven winds of hot luminous stars. XVII. Parameters of selected central stars of PN from consistent optical and UV spectral analysis and the universality of the mass-luminosity relation
Pauldrach, A. W. A.; Kaschinski, C. B.; Hoffmann, T. L.
Context. The commonly accepted mass-luminosity relation of central stars of planetary nebulae (CSPNs) might not be universally valid. While the atmospheric parameters Teff, log g, and the He abundances have in the past been determined using fits to photospheric H and He absorption lines from plane-parallel model atmospheres, the masses …
Mapping Titan's surface features within the visible spectrum via Cassini VIMS
Sotin, Christophe; Barnes, Jason W.; Le Mouélic, Stéphane +10 more
Titan shows its surface through many methane windows in the 1-5 µm region. Windows at shorter wavelengths also exist, polluted by scattering off of atmospheric haze that reduces the surface contrast. At visible wavelengths, the surface of Titan has been observed by Voyager I, the Hubble Space Telescope, and ground-based telescopes. We presen…
Search for Diffuse X-Rays from the Bow Shock Region of Runaway Star BD +43 3654 with Suzaku
Tashiro, Makoto S.; Terada, Yukikatsu; Kouzu, Tomomi +4 more
The bow shocks of runaway stars with strong stellar winds of over 2000 km s
Constraints on sterile neutrino dark matter from XMM-Newton observations of M33
Paolillo, M.; Longo, G.; Borriello, E. +2 more
Using archival XMM-Newton observations of the diffuse and unresolved components' emission in the inner disc of M33, we exclude the possible contribution from narrow line emission in the energy range 0.5-5 keV more intense than 10-6-10-5 erg s-1. Under the hypothesis that sterile neutrinos constitute the majority of…
Highly ionized collimated outflow from HE 0238-1904
Savage, B. D.; Narayanan, A.; Dewangan, G. C. +3 more
We present a detailed analysis of a highly ionized, multiphased and collimated outflowing gas detected through O V, O VI, Ne VIII and Mg X absorption associated with the QSO HE 0238-1904 (zem≃ 0.629). Based on the similarities in the absorption-line profiles and estimated covering fractions, we find that the O VI and Ne VIII absorption …
Early Ultraviolet Observations of a Type IIn Supernova (2007pk)
Brown, P. J.; Oates, S. R.; Holland, S. T. +6 more
We present some of the earliest UV observations of a Type IIn supernova (SN)—SN 2007pk, where UV and optical observations using Swift's Ultra-Violet/Optical Telescope began 3 days after discovery or ~5 days after shock breakout. The SN observations commence at approximately maximum light in the UV and u-band filters, suggesting that the UV light c…
A population of isolated hard X-ray sources near the supernova remnant Kes 69
Chen, Y.; Miceli, M.; Bocchino, F. +6 more
Recent X-ray observations of the supernova remnant (SNR) IC 443 interacting with molecular clouds detected a new population of hard X-ray sources related to the remnant itself, which has been proposed to be fast ejecta fragments propagating within the dense environment. Encouraged by these studies, we obtained a deep XMM-Newton observation of the …