Molecular clouds and the Gould belt

Taylor, David K.; Dickman, R. L.; Scoville, N. Z.

doi:10.1086/165117

Cited by 52 publications

(41 citation statements)

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“…We may conclude that 20-30% of the near AF stars may belong to the Gould belt. This estimate agrees with the earlier result of Taylor, et al [32].…”

Section: Stellar Compositionsupporting

confidence: 94%

“…The estimate of the mass of neutral hydrogen in the paper by Olano [96] was based on assuming a supernova explosion, followed by expansion and slowing down of the resulting shell. The mass of the Gould belt has been estimated by others [32,12,93] beginning with similar assumptions. They have pointed out that the difference between these estimates and that of Olano [96] mainly arises from the use of different values for the density of stars in the vicinity of the sun.…”

Section: Massmentioning

confidence: 99%

“…The relation between the Gould belt and low-latitude (|b| ≤ 24 • ) molecular clouds and their distributions and kinematics have been studied by Taylor, et al [32], who show that Рис. 3: The spatial distribution of young stellar groups and diffuse stellar clusters within a radius of 1 kpc from the sun according to the data of Porras, et al [64], with the large complexes of molecular clouds indicated.…”

Section: H2 Molecular Clouds and Hii Zonesmentioning

confidence: 99%

“…To estimate the overall mass of molecular H2 clouds belonging to the Gould belt, Taylor, et al [32], have reanalyzed the data of Lynds [97] taking into account the redistribution of matter that is typical of the Gould belt. The total mass of the stars in the Gould belt was estimated quite carefully, using an initial mass function derived from the data of various authors.…”

Section: Massmentioning

confidence: 99%

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The Gould Belt

Бобылев

2014

Astrophysics

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This review is devoted to studies of the Gould belt and the Local system. Since the Gould belt is the giant stellar-gas complex closest to the sun, its stellar component is characterized, along with the stellar associations and diffuse clusters, cold atomic and molecular gas, high-temperature coronal gas, and dust contained in it. Questions relating to the kinematic features of the Gould belt are discussed and the most interesting scenarios for its origin and evolution are examined.

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“…We may conclude that 20-30% of the near AF stars may belong to the Gould belt. This estimate agrees with the earlier result of Taylor, et al [32].…”

Section: Stellar Compositionsupporting

confidence: 94%

Section: Massmentioning

confidence: 99%

Section: H2 Molecular Clouds and Hii Zonesmentioning

confidence: 99%

Section: Massmentioning

confidence: 99%

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The Gould Belt

Бобылев

2014

Astrophysics

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“…One of the possible explanations is that these clouds are parts of the Gould belt. The Gould belt passes through the area of b $ 0 10 at l $ 347 (Taylor et al 1987), close to the location of the clouds at issue. Taylor et al (1987) also estimated the distance and the expansion velocity of the Gould belt ring to be $300 pc and $5 km s À1 respectively, which are not inconsistent with the properties of these clouds.…”

Section: Local Cloud Absorptionmentioning

confidence: 98%

A Detailed Study of Molecular Clouds toward the TeV Gamma‐Ray Supernova Remnant G347.3−0.5

Moriguchi

Tamura

Tawara

et al. 2005

ApJ

108

134

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The supernova remnant G347.3À0.5 (J1713.7À3946) is known as one of the unique SNRs that emit TeV -rays, as well as nonthermal X-rays. We present a detailed study of molecular gas toward this SNR obtained with the 4 m millimeter and submillimeter telescope NANTEN at an angular resolution of 2A6. This study has revealed that several intensity peaks and the overall distribution of the molecular gas with radial velocities from À12 to À3 km s À1 show a remarkably good correlation with the X-ray features, strongly supporting the recently derived kinematic distance around 1 kpc, as opposed to the 6 kpc previously claimed. In addition, we show that absorption of X-rays is caused by local molecular gas at softer X-ray bands. Subsequent measurements of the submillimeter J ¼ 3 2 transition of CO made with the ASTE 10 m and CSO 10.4 m submillimeter telescopes toward three of the molecular intensity peaks have revealed higher excitation conditions, most likely higher temperatures above $30 K , in contrast to the typical gas temperature, 10 K, in low-mass dark clouds. This temperature rise is most likely caused by enhanced heating by the high-energy events in the SNR, where possible mechanisms include heating by X-rays, -rays, and/or cosmic-ray protons, although we admit that additional radiative heating by young protostars embedded may be working as well. In one of the CO peaks, we have confirmed the presence of broad molecular wings of $20 km s À1 velocity extent in the CO J ¼ 3 2 transition. Two alternative interpretations for the wings are presented; one is shock acceleration by the blast wave, and the other is molecular outflow driven by an embedded protostar. The SNR evolution is well explained as the free expansion phase based on the distance of 1 kpc. The molecular data set should be valuable for making a further detailed comparison with the -ray and X-ray distributions in order to examine the cosmic-ray acceleration quantitatively. Subject headingg s: cosmic rays -ISM: individual (SNR J1713.37À3946) -ISM: kinematics and dynamicssupernova remnants

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Determination of dust properties and magnetic fields from polarimetric and photometric observations of stars (Review)

Вощинников¹

1989

Astron Nachr

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Various models of the interstellar extinction and polarization are considered. Special attention is devoted to alignment mechanisms of the dust grains. such as Davies-Greenstein mechanism and suprathernial spinning alignment. and their approximate versions. It is concluded that the grain SIK and the strength and the direction of the interstellar magnetic field may be estimated from the extinction and polarization data. Applications o f the thcorctical results to the observations of the stars in the galactic plane are discussed. 1.

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Molecular clouds and the Gould belt

Cited by 52 publications

References 0 publications

The Gould Belt

The Gould Belt

A Detailed Study of Molecular Clouds toward the TeV Gamma‐Ray Supernova Remnant G347.3−0.5

Determination of dust properties and magnetic fields from polarimetric and photometric observations of stars (Review)

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