Search Publications
Discrete Mass Ejections from the Be/X-Ray Binary A0535+26/HD 245770
Li, Hui; Yan, Jingzhi; Liu, Qingzhong
We present long-term optical spectroscopic observations on the Be/X-ray binary A0535+26 from 1992 to 2010. Combined with the public V-band photometric data, we find that each giant X-ray outburst occurred in a fading phase of the optical brightness. The anti-correlation between the optical brightness and the Hα intensity during our 2009 observatio…
The LEGUE high latitude bright survey design for the LAMOST pilot survey
Xu, Yan; Lépine, Sébastien; Deng, Li-Cai +14 more
We describe the footprint and input catalog for bright nights in the LAMOST Pilot Survey, which began in October 2011. Targets are selected from two stripes in the north and south Galactic Cap regions, centered at δ = 29°, with 10° width in declination, covering right ascensions of 135° to 290° and -30° to 30° respectively. We selected spectroscop…
Complex particle acceleration processes in the hotspots of 3C 105 and 3C 445
Brunetti, G.; Prieto, M. A.; Massaro, F. +3 more
We investigate the nature of the broad-band emission associated with the low-power radio hotspots 3C 105 South and 3C 445 South. Both hotspot regions are resolved in multiple radio/optical components. High-sensitivity radio Very Large Array, near-infrared/optical Very Large Telescope and Hubble Space Telescope (HST) and X-ray Chandra data have bee…
An updated catalog of OH-maser-emitting planetary nebulae
Gómez, J. F.; Miranda, L. F.; Suárez, O. +1 more
Aims: We studied the characteristics of planetary nebulae (PNe) that show both OH maser and radio continuum emission (hereafter OHPNe). These have been proposed to be very young PNe, and therefore, they could be key objects for understanding the formation and evolution of PNe.
Methods: We consulted the literature searching for interferom…
A peculiar galaxy appears at redshift 11: properties of a moderate-redshift interloper
Hayes, Matthew; Schaerer, Daniel; Pelló, Roser +2 more
In 2011 Laporte et al. reported a very high redshift galaxy candidate: a lensed J-band dropout (A2667-J1). J1 has a photometric redshift of z= 9.6-12, the probability density function for which permits no low- or intermediate-z solution. We here report new spectroscopic observations of this galaxy with Very Large Telescope/X-Shooter, which show cl…
SphinX Measurements of the 2009 Solar Minimum X-Ray Emission
Kuzin, S.; Phillips, K. J. H.; Reale, F. +9 more
The SphinX X-ray spectrophotometer on the CORONAS-PHOTON spacecraft measured soft X-ray emission in the 1-15 keV energy range during the deep solar minimum of 2009 with a sensitivity much greater than GOES. Several intervals are identified when the X-ray flux was exceptionally low, and the flux and solar X-ray luminosity are estimated. Spectral fi…
Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data
Imamura, Takeshi; Takagi, Masahiro; Kouyama, Toru +3 more
Japanese Venus Climate Orbiter, Akatsuki, is cruising to approach to Venus again although its first Venus orbital insertion (VOI) has been failed. At present, we focus on the next opportunity of VOI and the following scientific observations.We have constructed an automated cloud tracking system for processing data obtained by Akatsuki in the prese…
YSO jets in the Galactic plane from UWISH2 - I. MHO catalogue for Serpens and Aquila
Froebrich, D.; Ioannidis, G.
Jets and outflows from young stellar objects (YSOs) are important signposts of currently ongoing star formation. In order to study these objects, we are conducting an unbiased survey along the Galactic plane in the 1-0 S(1) emission line of molecular hydrogen at 2.122 µm using the United Kingdom Infrared Telescope. In this paper, we are focu…
Impact of Systematics on SZ-Optical Scaling Relations
Miller, C. J.; Shaw, L.; Nord, B. +2 more
One of the central goals of multi-wavelength galaxy cluster cosmology is to unite all cluster observables to form a consistent understanding of cluster mass. Here, we study the impact of systematic effects from optical cluster catalogs on stacked Sunyaev-Zel'dovich (SZ) signals. We show that the optically predicted Y-decrement can vary by as much …
First Detection of Hydrogen Chloride Toward Protostellar Shocks
Codella, C.; Ceccarelli, C.; Caux, E. +8 more
We present the first detection of hydrogen chloride in a protostellar shock by observing the fundamental transition at 626 GHz with the HIFI spectrometer. We detected two of the three hyperfine lines from which we derived a line opacity <=1. Using a non-local thermodynamic equilibrium large velocity gradient code, we constrained the HCl column …