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相关论文: Spitzer Observations of Bok Globule B335: Isolated…

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We present mid-infrared (10.4 \micron, 11.7 \micron, and 18.3 \micron) imaging intended to locate and characterize the suspected protostellar components within the Bok globule CB54. We detect and confirm the protostellar status for the…

天体物理学 · 物理学 2009-06-23 David R. Ciardi , Cynthia Gomez Martin

Thanks to their well-defined shape and mostly isolated locations, Bok globules are suitable objects for studying the physics of low-mass star formation. To study the magnetic field of the prototypical Bok globule B335, we obtained a…

太阳与恒星天体物理 · 物理学 2021-02-03 Niko Zielinski , Sebastian Wolf , Robert Brunngräber

We present the results of a comprehensive infrared, submillimetre, and millimetre continuum emission study of isolated low-mass star-forming cores in 32 Bok globules, with the aim to investigate the process of star formation in these…

星系天体物理 · 物理学 2015-05-18 R. Launhardt , D. Nutter , D. Ward-Thompson , T. L. Bourke , Th. Henning , T. Khanzadyan , M. Schmalzl , S. Wolf , R. Zylka

The isolated globule B335 contains a single, low luminosity Class 0 protostar associated with a bipolar nebula and outflow system seen nearly perpendicular to its axis. We observed the innermost regions of this outflow as part of…

We present a near-infrared extinction study of the dark globule B335, a protostellar collapse candidate, using data from HST/NICMOS and the W.M. Keck Observatory. These data allow a new quantitative test of the "inside-out" collapse model…

天体物理学 · 物理学 2009-11-07 Daniel W. A. Harvey , David J. Wilner , Charles J. Lada , Philip C. Myers , Joao F. Alves , Hua Chen

In this study, the detailed magnetic field structure of the dense protostellar core Barnard 335 (B335) was revealed based on near-infrared polarimetric observations of background stars to measure dichroically polarized light produced by…

We report the first evidence of a hot corino in a Bok globule. This is based on the ALMA observations in the 1.2 mm band toward the low-mass Class 0 protostar IRAS 19347+0727 in B335. Saturated complex organic molecules (COMs), CH$_3$CHO,…

In an effort to shed more light on the formation process of binary stars, we have started a program to study multiplicity among nearby low- and intermediate-mass protostars using the OVRO Millimeter Array. Here, we describe the project and…

天体物理学 · 物理学 2007-05-23 R. Launhardt , A. I. Sargent , H. Zinnecker

We present an observational study of the protostellar core B335 harboring a low-mass Class 0 source. The observations of the H13CO+(J=1-0) line emission were carried out using the Nobeyama 45 m telescope and Nobeyama Millimeter Array. Our…

太阳与恒星天体物理 · 物理学 2015-06-15 Yasutaka Kurono , Masao Saito , Takeshi Kamazaki , Koh-Ichiro Morita , Ryohei Kawabe

We present subarcsecond resolution dust continuum observations of the protostellar collapse candidate B335 made with the IRAM Plateau de Bure Interferometer at wavelengths of 1.2 and 3.0 mm. These observations probe to < 100 AU size scales…

天体物理学 · 物理学 2009-11-10 Daniel W. A. Harvey , David J. Wilner , Philip C. Myers , Mario Tafalla

We present Herschel observations of the isolated, low-mass star-forming Bok globule CB244. It contains two cold sources, a low-mass Class 0 protostar and a starless core, which is likely to be prestellar in nature, separated by 90 arcsec (~…

太阳与恒星天体物理 · 物理学 2015-05-18 A. Stutz , R. Launhardt , H. Linz , O. Krause , T. Henning , J. Kainulainen , M. Nielbock , J. Steinacker , P. Andre

We present a study of the density structure of the protostellar collapse candidate B335 using continuum observations from the IRAM Plateau de Bure Interferometer made at wavelengths of 1.2mm and 3.0mm. We analyze these data, which probe…

天体物理学 · 物理学 2009-11-07 D. W. A. Harvey , D. J. Wilner , P. C. Myers , M. Tafalla , D. Mardones

We present Spitzer observations of the dark globule CB190 (L771). We observe a roughly circular 24 micron shadow with a 70 arcsec radius. The extinction profile of this shadow matches the profile derived from 2MASS photometry at the outer…

We present sub-arcsecond resolution millimeter-wave images of a circumstellar disk in the Bok globule CB26. The presence of an edge-on disk is confirmed by the dust continuum morphology and the velocity field of 13CO emission, which…

天体物理学 · 物理学 2009-11-07 R. Launhardt , A. I. Sargent

We observed a test globule, B 335 in U, B, g, r, and I, and together with the 2MASS survey, this data set gives a well-defined spectral energy distribution (SED) of a large number of stars. The SED of each star depends on the interstellar…

星系天体物理 · 物理学 2011-12-02 Sven Olofsson , Göran Olofsson

The Bok globule CB230 (L1177) contains an active, low-mass star-forming core which is associated with a double NIR reflection nebula, a collimated bipolar molecular outflow, and strong mm continuum emission. The morphology of the NIR nebula…

天体物理学 · 物理学 2007-05-23 R. Launhardt

The shapes of isolated Bok globules and embedded dense cores of molecular clouds are analyzed using a nonparametric method, under the alternate hypotheses that they are randomly oriented prolate objects or that they are randomly oriented…

天体物理学 · 物理学 2009-10-28 Barbara S. Ryden

We have performed detailed imaging and analyses of SMA observations in 230 GHz continuum, 12CO (2-1), 13CO (2-1), and C18O (2-1) emission toward B335, a Bok globule with an embedded Class 0 source (Lbol ~ 1.5 Lsun). We report the first…

太阳与恒星天体物理 · 物理学 2015-05-18 Hsi-Wei Yen , Shigehisa Takakuwa , Nagayoshi Ohashi

We investigate the structure of the core surrounding the recently identified deeply embedded young stellar object Barnard 1c which has an unusual polarization pattern as traced in submillimeter dust emission. Barnard 1c lies within the…

天体物理学 · 物理学 2008-11-26 B. C. Matthews , M. R. Hogerheijde , J. K. Jorgensen , E. A. Bergin

In this paper, the results obtained from the polarimetric study of a Bok globule CB17 in both optical and sub-millimeter wavelength are presented. The optical polarimetric observations in R-band ($\lambda$ = 630 nm, $\Delta \lambda$ = 120…

太阳与恒星天体物理 · 物理学 2019-06-05 G. B. Choudhury , A. Barman , H. S. Das , B. J. Medhi
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