output
19932026
Showing 2014 · astro-ph.SRShow all

57 papers · 2 filters

astro-ph.SR2014★ 28 cited

3D radiative transfer simulations of Eta Carinae's inner colliding winds - I. Ionization structure of helium at apastron

Nicola Clementel, Thomas I. Madura, Chael Kruip +2

The highly eccentric binary system Eta Carinae shows numerous time-variable emission and absorption features. These observational signatures are the result of interactions between…

astro-ph.SR2014★ 59 cited

The Gould Belt Very Large Array Survey IV: The Taurus-Auriga complex

Sergio A. Dzib, Laurent Loinard, Luis F. Rodríguez +11

We present a multi-epoch radio study of the Taurus-Auriga star-forming complex made with the Karl G. Jansky Very Large Array at frequencies of 4.5 GHz and 7.5 GHz. We detect a tota…

astro-ph.SR2014★ 29 cited

The JCMT Gould Belt Survey: Evidence for radiative heating in Serpens MWC 297 and its influence on local star formation

D. Rumble, J. Hatchell, R. A. Gutermuth +61

We present SCUBA-2 450micron and 850micron observations of the Serpens MWC 297 region, part of the JCMT Gould Belt Survey of nearby star-forming regions. Simulations suggest that r…

astro-ph.SR2014★ 12 cited

The SiO outflow from IRAS 17233-3603 at high resolution

P. D. Klaassen, K. G. Johnston, S. Leurini +1

Context: Jets and outflows are key ingredients in the formation of stars across the mass spectrum. In clustered regions, understanding powering sources and outflow components poses…

astro-ph.SR2014★ 17 cited

Surprising detection of an equatorial dust lane on the AGB star IRC+10216

S. V. Jeffers, M. Min, L. B. F. M. Waters +6

Understanding the formation of planetary nebulae remains elusive because in the preceding asymtotic giant branch (AGB) phase these stars are heavily enshrouded in an optically thic…

astro-ph.SR2014★ 24 cited

ALMA observations of alpha Centauri: First detection of main-sequence stars at 3mm wavelength

R. Liseau, W. Vlemmings, A. Bayo +19

The precise mechanisms that provide the non-radiative energy for heating the chromosphere and the corona of the Sun and those of other stars constitute an active field of research.…

astro-ph.SR2014★ 62 cited

Ro-vibrational excitation of an organic molecule (HCN) in protoplanetary disks

Simon Bruderer, Daniel Harsono, Ewine F. van Dishoeck

(Abridged) Organic molecules are important constituents of protoplanetary disks. Their ro-vibrational lines observed in the near- and mid-infrared are commonly detected toward T Ta…

astro-ph.SR2014

Confirmation and characterization of the protoplanet HD100546 b - Direct evidence for gas giant planet formation at 50 au

Sascha P. Quanz, Adam Amara, Michael R. Meyer +3

We present the first multi-wavelength, high-contrast imaging study confirming the protoplanet embedded in the disk around the Herbig Ae/Be star HD100546. The object is detected at…

astro-ph.SR2014★ 98 cited

Radio imaging observations of PSR J1023+0038 in an LMXB state

A. T. Deller, J. Moldón, J. C. A. Miller-Jones +6

The transitional millisecond pulsar binary system PSR J1023+0038 re-entered an accreting state in 2013 June, in which it bears many similarities to low-mass X-ray binaries (LMXBs)…

astro-ph.SR2014★ 75 cited

Secular dynamics of hierarchical quadruple systems: the case of a triple system orbited by a fourth body

Adrian S. Hamers, Hagai B. Perets, Fabio Antonini +1

We study the secular gravitational dynamics of quadruple systems consisting of a hierarchical triple system orbited by a fourth body. These systems can be decomposed into three bin…

astro-ph.SR2014★ 8 cited

Herschel -PACS observations of [OI] and H2O in Cha II

P. Riviere-Marichalar, A. Bayo, I. Kamp +11

Gas plays a major role in the dynamical evolution of protoplanetary discs. Its coupling with the dust is the key to our understanding planetary formation. Studying the gas content…

astro-ph.SR2014★ 27 cited

Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049

O. Kochukhov, N. Rusomarov, J. A. Valenti +7

Intermediate-mass, magnetic chemically peculiar (Ap) stars provide a unique opportunity to study the topology of stellar magnetic fields in detail and to investigate magnetically d…

astro-ph.SR2014★ 19 cited

Quest for finding the lost siblings of the Sun

C. Liu, G. Ruchti, S. Feltzing +4

The aim of this paper is to find lost siblings of the Sun by analyzing high resolution spectra. Finding solar siblings will enable us to constrain the parameters of the parental cl…

astro-ph.SR2014★ 74 cited

Stirring in massive, young debris discs from spatially resolved Herschel images

A. Moór, Á. Kóspál, P. Ábrahám +9

A significant fraction of main-sequence stars are encircled by dusty debris discs, where the short-lived dust particles are replenished through collisions between planetesimals. Mo…

astro-ph.SR2014★ 11 cited

Herschel/PACS view of disks around low-mass stars and brown dwarfs in the TW Hya association

Yao Liu, Gregory J. Herczeg, Munan Gong +6

We conducted Herschel/PACS observations of five very low-mass stars or brown dwarfs located in the TW Hya association with the goal of characterizing the properties of disks in the…

astro-ph.SR2014★ 26 cited

ALMA Observations of the IRDC Clump G34.43+00.24 MM3: 278 GHz Class I Methanol Masers

Takahiro Yanagida, Takeshi Sakai, Tomoya Hirota +7

We have observed a molecular clump (MM3) associated with the infrared dark cloud G34.43+00.24 in the CH3OH J_K=9_{-1}--8_0 E, 5_0-4_0 E, and 5_{-1}-4_{-1} E lines at sub-arcsecond…

astro-ph.SR2014★ 36 cited

Mass and period limits on the ringed companion transiting the young star J1407

M. A. Kenworthy, S. Lacour, A. Kraus +11

The young (~16 Myr) pre-main-sequence star in Sco-Cen 1SWASP J140747.93-394542.6, hereafter referred to as J1407, underwent a deep eclipse in 2007 April, bracketed by several shall…

astro-ph.SR2014★ 46 cited

Pore evolution in interstellar ice analogues: simulating the effects of temperature increase

S. Cazaux, J. -B. Bossa, H. Linnartz +1

Context. The level of porosity of interstellar ices - largely comprised of amorphous solid water (ASW) - contains clues on the trapping capacity of other volatile species and deter…

astro-ph.SR2014★ 75 cited

A Substellar-Mass Protostar and its Outflow of IRAS 15398-3359 Revealed by Subarcsecond-Resolution Observations of HCO and CCH

Yoko Oya, Nami Sakai, Takeshi Sakai +7

Sub-arcsecond () images of HCO and CCH line emission have been obtained in the mm band toward the low-mass protostar IRAS 15398-3359 in the Lupus 1 cl…

astro-ph.SR2014★ 62 cited

The state of globular clusters at birth II: primordial binaries

Nathan W. C. Leigh, Mirek Giersz, Michael Marks +5

(abridged) In this paper, we constrain the properties of primordial binary populations in Galactic globular clusters using the MOCCA Monte Carlo code for cluster evolution. Our res…

astro-ph.SR2014★ 202 cited

Protoplanetary disk masses from CO isotopologues line emission

Anna Miotello, Simon Bruderer, Ewine F. van Dishoeck

One of the methods for deriving disk masses relies on direct observations of the gas, whose bulk mass is in the outer cold (K) regions. This zone can be well traced by…

astro-ph.SR2014★ 22 cited

A resolved, au-scale gas disk around the B[e] star HD 50138

L. E. Ellerbroek, M. Benisty, S. Kraus +14

HD 50138 is a B[e] star surrounded by a large amount of circumstellar gas and dust. Its spectrum shows characteristics which may indicate either a pre- or a post-main-sequence syst…

astro-ph.SR2014★ 45 cited

Shockingly low water abundances in Herschel / PACS observations of low-mass protostars in Perseus

A. Karska, L. E. Kristensen, E. F. van Dishoeck +16

Protostars interact with their surroundings through jets and winds impacting on the envelope and creating shocks, but the nature of these shocks is still poorly understood. Our aim…

astro-ph.SR2014★ 14 cited

Dust composition and mass-loss return from the luminous blue variable R71 in the LMC

S. Guha Niyogi, M. Min, M. Meixner +3

We present an analysis of mid-and far-infrared (IR) spectrum and spectral energy distribution (SED) of the LBV R71 in the LMC.This work aims to understand the overall contribution…