Search Publications
Looking for Gravity-Mode Multiplets with the GOLF Experiment aboard SOHO
Kosovichev, A. G.; García, R. A.; Provost, J. +12 more
This paper is focused on the search for low-amplitude solar gravity modes between 150 and 400 µHz, corresponding to low-degree, low-order modes. It presents results based on an original strategy that looks for multiplets instead of single peaks, taking into consideration our knowledge of the solar interior from acoustic modes. Five years of …
Photometric Redshift of X-Ray Sources in the Chandra Deep Field-South
Wolf, C.; Zheng, W.; Gilli, R. +10 more
Based on the photometry of 10 near-ultraviolet, optical, and near-infrared bands of the Chandra Deep Field-South, we estimate the photometric redshifts for 342 X-ray sources, which constitute ~99% of all the detected X-ray sources in the field. The models of spectral energy distribution are based on galaxies and a combination of power-law continuu…
Tentative identification of urea and formamide in ISO-SWS infrared spectra of interstellar ices
Duvernay, F.; Chiavassa, T.; Dartois, E. +4 more
Laboratory experiments involving vacuum ultraviolet (VUV) irradiation of solid isocyanic acid (HNCO) at 10 K, followed by infrared spectroscopy (FTIR), are used to interpret the complex spectra associated with Interstellar Medium (ISM) dust grains, particularly the spectra associated with the icy phase observed toward dense molecular clouds. The c…
2-10 keV luminosity of high-mass binaries as a gauge of ongoing star-formation rate
Cappi, M.; Franceschini, A.; Braito, V. +4 more
Based on recent work on spectral decomposition of the emission of star-forming galaxies, we assess whether the integrated 2-10 keV emission from high-mass X-ray binaries (HMXBs), L2-10HMXB, can be used as a reliable estimator of ongoing star formation rate (SFR). Using a sample of 46 local (z ⪉ 0.1) star-forming galaxies, and…
The Nature of Faint 24 Micron Sources Seen in Spitzer Space Telescope Observations of ELAIS-N1
Elbaz, D.; Reach, W. T.; Chary, R. +7 more
The Spitzer Space Telescope has undertaken the deepest ever observations of the 24 µm sky in the European Large Area ISO Survey (ELAIS-N1) field, with the Multiband Imaging Photometer (MIPS) instrument, as part of GOODS Science Verification observations. We present completeness-corrected extragalactic source counts down to 24 µm flux d…
A sample of radio galaxies spanning three decades in radio luminosity - I. The host galaxy properties and black hole masses
Willott, Chris J.; Rawlings, Steve; Jarvis, Matt J. +5 more
The results of analysis of HST I-band imaging of a sample of 41 radio galaxies spanning three orders of magnitude in radio luminosity at redshift z~= 0.5 are presented. These results represent the first stage in a coordinated programme to study the connection between radio luminosity and host galaxy properties, black hole masses and cluster enviro…
Discovery of Another Peculiar Radial Distribution of Blue Stragglers in Globular Clusters: The Case of 47 Tucanae
Ferraro, Francesco R.; Sills, Alison; Sabbi, Elena +3 more
We have used the high-resolution Wide Field Planetary Camera (WFPC2) on the Hubble Space Telescope (HST) and wide-field ground-based observations to construct a catalog of blue straggler stars (BSSs) in the globular cluster 47 Tuc spanning the entire radial extent of the cluster. The BSS distribution is highly peaked in the cluster center, rapidly…
Photometric Redshifts for Galaxies in the GOODS Southern Field
Cimatti, A.; Daddi, E.; Wolf, C. +19 more
We use extensive multiwavelength photometric data from the Great Observatories Origins Deep Survey to estimate photometric redshifts for a sample of 434 galaxies with spectroscopic redshifts in the Chandra Deep Field-South. Using the Bayesian method, which incorporates redshift/magnitude priors, we estimate photometric redshifts for galaxies in th…
Influence of coronal mass ejection interaction on propagation of interplanetary shocks
Howard, R. A.; Gopalswamy, N.; Michalek, G. +3 more
We studied 91 interplanetary (IP) shocks associated with coronal mass ejections (CMEs) originating within about ±30° in longitude and latitude from the center of the Sun during 1997-2002. These CMEs cover a wide range of initial speeds of about 120 to 2400 kms-1 and they also include a special population of 25 interacting CMEs. This stu…
The Structure of the Local Interstellar Medium. II. Observations of D I, C II, N I, O I, Al II, and Si II toward Stars within 100 Parsecs
Redfield, Seth; Linsky, Jeffrey L.
Moderate- and high-resolution measurements (λ/Δλ>~40,000) of interstellar resonance lines of D I, C II, N I, O I, Al II, and Si II (hereafter called light ions) are presented for all available observed targets located within 100 pc that also have high-resolution observations of interstellar Fe II or Mg II (heavy ions) lines. All spectra were ob…