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Interdependencies Between the Actively Controlled Cluster Spacecraft Potential, Ambient Plasma, and Electric Field Measurements
Nakamura, Rumi; Torkar, Klaus; Andriopoulou, Maria
Star-forming regions at the periphery of the supershell surrounding the Cyg OB1 association - I. The star cluster vdB 130 and its ambient gas and dust medium
Wiebe, D. S.; Moiseev, A. V.; Rastorguev, A. S. +6 more
Stellar population and the interstellar gas-dust medium in the vicinity of the open star cluster vdB 130 are analysed using optical observations taken with the 6 m telescope of the Special Astrophysical Observatory of Russian Academy of Sciences and the 125 cm telescope of the Sternberg Astronomical Institute, Lomonosov Moscow State University alo…
Probing the nature of the pre-merging system Hickson Compact Group 31 through integral field unit data★
Mendes de Oliveira, C.; de Mello, D. F.; Amram, P. +3 more
We present a study of the kinematics and the physical properties of the central region of the Hickson Compact Group 31 (HCG 31), focusing on the HCG 31A+C system, using integral field spectroscopy data taken with the Gemini South Telescope. The main players in the merging event (galaxies A and C) are two dwarf galaxies, which have had one close en…
High Angular Resolution Multi-line Study of HH 1 and 2
Bally, J.; Raga, A. C.; Reipurth, Bo +2 more
We present new Hubble Space Telescope (HST) narrow band images of the bright Herbig-Haro (HH) objects HH 1 and 2 in the light of the Hα, Hβ, [O i] 6300, [O ii] 3726+28, [O iii] 5007 and [S ii] 6716+30 emission lines. The resulting emission and line ratio maps give an improved picture of the physical structure of these HH objects, showing the prese…
Swift J201424.9+152930: discovery of a new deeply eclipsing binary with 491-s and 3.4-h modulations
D'Avanzo, P.; Campana, S.; D'Elia, V. +13 more
We report on the discovery of a new X-ray pulsator, Swift J201424.9+152930 (Sw J2014). Owing to its X-ray modulation at 491 s, it was discovered in a systematic search for coherent signals in the archival data of the Swift X-ray Telescope. To investigate the nature of Sw J2014, we performed multiwavelength follow-up observations with space-borne (…
Forecast of a Daily Halo CME Occurrence Probability Depending on Class and Area Change of the Associated Sunspot
Moon, Yong-Jae; Lee, Jin-Yi; Lee, Kangjin
We investigate the halo (partial and full) coronal mass ejection (CME) occurrence probability depending on class and area change of the associated sunspot using front-side halo CMEs from 1996 to 2011. We select the most halo CME-productive 14 sunspot classifications: Cao, Cko, Dai, Dao, Dko, Dki, Dkc, Eao, Eai, Eko, Eki, Ekc, Fki, and Fkc. For eac…
Early science with the Large Millimeter Telescope: dust constraints in a z ∼ 9.6 galaxy
Yun, M. S.; Pope, A.; Dunlop, J. S. +8 more
Recent observations with the GISMO (Goddard-IRAM Superconducting 2 Millimeter Observer) 2 mm camera revealed a detection 8 arcsec away from the lensed galaxy MACS1149-JD1 at z = 9.6. Within the 17.5 arcsec FWHM GISMO beam, this detection is consistent with the position of the high-redshift galaxy and therefore, if confirmed, this object could be c…
New Precision Orbits of Bright Double-Lined Spectroscopic Binaries. IX. HD 54371, HR 2692, and 16 Ursa Majoris
Williamson, Michael H.; Fekel, Francis C.; Muterspaugh, Matthew W. +3 more
With extensive sets of new radial velocities we have determined orbital elements for three previously known spectroscopic binaries, HD 54371, HR 2692, and 16 UMa. All three systems have had the lines of their secondaries detected for the first time. The orbital periods range from 16.24 to 113.23 days, and the three binaries have modestly or modera…
Plasma waves around separatrix in collisionless magnetic reconnection with weak guide field
Ji, Hantao; Xiao, Chijie; Fujimoto, Keizo +1 more
Electrostatic and electromagnetic waves excited by electron beam around the separatrix region are analyzed in detail during the collisionless magnetic reconnection with a weak guide field by using 2-D particle-in-cell simulation with the adaptive mesh refinement. Broadband electrostatic waves are excited both in the inflow and outflow regions arou…
The spectral energy distribution of galaxies at z > 2.5: Implications from the Herschel/SPIRE color-color diagram
Buat, Véronique; Burgarella, Denis; Hou, Jinliang +5 more
We use the Herschel SPIRE color-color diagram to study the spectral energy distribution (SED) and the redshift estimation of high-z galaxies. We compiled a sample of 57 galaxies with spectroscopically confirmed redshifts and SPIRE detections in all three bands at z = 2.5-6.4, and compared their average SPIRE colors with SED templates from local an…