Search Publications
The PSR J1124-5916 wind nebula in the near-infrared
Zharikov, S. V.; Zyuzin, D. A.; Mennickent, R. E. +1 more
Context. The young radio pulsar J1124-5916 is associated with the Cas A like supernova remnant G292.0+1.8. It powers a compact torus-like pulsar wind nebula with a jet first detected in X-rays and then identified in the optical and mid-infrared.
Aims: We carried out deep near-infrared observations of the pulsar field to identify the pulsar an…
A Herschel study of NGC 650
Ivison, R. J.; Olofsson, G.; Gomez, H. L. +15 more
As part of the Herschel guaranteed time key project Mass loss of Evolved StarS (MESS) we have imaged a sample of planetary nebulae. In this paper we present the Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver (SPIRE) images of the classical bipolar planetary nebula NGC 650. We used these images to d…
Nonthermal emission properties of the northwestern rim of supernova remnant RX J0852.0-4622
Uchiyama, Y.; Kishishita, T.; Hiraga, J.
The supernova remnant (SNR) RX J0852.0-4622 (Vela Jr., G266.6-1.2) is one of the most important SNRs for investigating the acceleration of multi-TeV particles and the origin of Galactic cosmic rays because of its strong synchrotron X-ray and TeV γ-ray emission, which show a shell-like morphology similar to each other. Using the XMM-Newton archival…
Analysis of Detached Eclipsing Binaries near the Turnoff of the Open Cluster NGC 7142
Orosz, Jerome; Shetrone, Matthew; Sandquist, Eric L. +1 more
We analyze extensive BVRCIC photometry and radial velocity measurements for three double-lined deeply eclipsing binary stars in the field of the old open cluster NGC 7142. The short period (P = 1.9096825 days) detached binary V375 Cep is a high probability cluster member, and has a total eclipse of the secondary star. The cha…
SMM J04135+10277: A Candidate Early-stage "Wet-Dry" Merger of Two Massive Galaxies at z = 2.8
Riechers, Dominik A.
We report interferometric imaging of CO(J = 3→2) emission toward the z = 2.846 submillimeter-selected galaxy SMM J04135+10277, using the Combined Array for Research in Millimeter-wave Astronomy (CARMA). SMM J04135+10277 was previously thought to be a gas-rich, submillimeter-selected quasar, with the highest molecular gas mass among high-z quasars …
The Herschel PACS photometer calibration. A time dependent flux calibration for the PACS chopped point-source photometry AOT mode
Sauvage, Marc; Okumura, Koryo; Linz, Hendrik +7 more
We present a flux calibration scheme for the PACS chopped point-source photometry observing mode based on the photometry of five stellar standard sources. This mode was used for science observations only early in the mission. Later, it was only used for pointing and flux calibration measurements. Its calibration turns this type of observation into…
Identification of transitional disks in Chamaeleon with Herschel
Prusti, T.; Pilbratt, G. L.; Bouy, H. +11 more
Context. Transitional disks are circumstellar disks with inner holes that in some cases are produced by planets and/or substellar companions in these systems. For this reason, these disks are extremely important for the study of planetary system formation.
Aims: The Herschel Space Observatory provides an unique opportunity for studying the ou…
Primary and secondary compressible Kelvin-Helmholtz surface wave instabilities on the Earth's magnetopause
Turkakin, H.; Mann, I. R.; Rankin, R.
Primary and secondary Kelvin-Helmholtz surface wave modes on the Earth's magnetopause are studied within the framework of warm plasma ideal magnetohydrodynamics (MHD) across an infinitely thin magnetopause tangential discontinuity (TD). With the increase of background flow velocity, a Kelvin-Helmholtz Instability (KHI) unstable boundary separating…
Gemini Spectroscopy of Ultracompact Dwarfs in the Fossil Group NGC 1132
Madrid, Juan P.; Donzelli, Carlos J.
A spectroscopic follow-up of ultracompact dwarf (UCD) candidates in the fossil group NGC 1132 is undertaken with the Gemini Multi Object Spectrograph. These new Gemini spectra prove the presence of six UCDs in the fossil group NGC 1132 at a distance of D ~ 100 Mpc and a recessional velocity of vr = 6935 ± 11 km s-1. The brigh…
Rapid Spectral Changes of Cygnus X-1 in the Low/Hard State with Suzaku
Yamada, S.; Noda, H.; Negoro, H. +3 more
Rapid spectral changes in the hard X-ray on a timescale down to ~0.1 s are studied by applying a "shot analysis" technique to the Suzaku observations of the black hole binary Cygnus X-1, performed on 2008 April 18 during the low/hard state. We successfully obtained the shot profiles, covering 10-200 keV with the Suzaku HXD-PIN and HXD-GSO detector…