Adicção a drogas e funcionamentos limites: suas expressões e convergências no Rorschach

Kallas, Renata Galves Merino

doi:10.11606/t.47.2012.tde-18122012-084906

Cited by 13 publications

(24 citation statements)

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“…In this paper, we present the observations of the southwestern half of W3, which includes the small H II region KR 140 (Kallas & Reich 1980), as a separate region that we named W3-west.…”

Section: W3mentioning

confidence: 99%

KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds

Keown

Francesco

Rosolowsky

et al. 2019

ApJ

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We present initial results from the K-band focal plane array Examinations of Young STellar Object Natal Environments (KEYSTONE) survey, a large project on the 100m Green Bank Telescope mapping ammonia emission across eleven giant molecular clouds at distances of 0.9 − 3.0 kpc (Cygnus X North, Cygnus X South, M16, M17, MonR1, MonR2, NGC2264, NGC7538, Rosette, W3, and W48). This data release includes the NH 3 (1,1) and (2,2) maps for each cloud, which are modeled to produce maps of kinetic temperature, centroid velocity, velocity dispersion, and ammonia column

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“…In this paper, we present the observations of the southwestern half of W3, which includes the small H II region KR 140 (Kallas & Reich 1980), as a separate region that we named W3-west.…”

Section: W3mentioning

confidence: 99%

KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds

Keown

Francesco

Rosolowsky

et al. 2019

ApJ

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“…35 and 14.35 GHz can be used, although the detection limit of 0.9 Jy at 8.35 GHz and 2.5 Jy at 14.35 GHz restricts these measurements to only the brightest sources. In addition to these surveys a number of pointed H II samples have been made including those of Gregory & Taylor (1986) at 5 GHz, Kallas & Reich (1980), Kazes, Walmsley & Churchwell (1977) again with the Effelsberg 100-m dish, Felli et al (1978) at 6-arcsec resolution using the Westerbork telescope and a number of small samples of H II regions were presented in a series of papers (Israel, Habing & de Jong 1973;Israel 1976aIsrael ,b, 1977a.…”

Section: M Ag I N G a N D S P E C T R Amentioning

confidence: 99%

AMI limits on 15-GHz excess emission in northern H ii regions

Scaife¹,

Hurley‐Walker²,

Davies³

et al. 2008

Monthly Notices RAS

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We present observations between 14.2 and 17.9 GHz of 16 Galactic H ii regions made with the Arcminute Microkelvin Imager. In conjunction with data from the literature at lower radio frequencies we investigate the possibility of a spinning dust component in the spectra of these objects. We conclude that there is no significant evidence for spinning dust towards these sources and measure an average spectral index of α= 0.15 ± 0.07 (where S∝ν−α) between 1.4 and 17.9 GHz for the sample.

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“…• 425, b = +0. • 054; Kallas & Reich 1980) is a 5.7-pc-diameter H II region located at a distance of 2.3 ± 0.3 kpc. It is close to, but apparently isolated from, the large W3/W4/W5 star formation complex.…”

Section: K R 1 4 0 : P Ro P E Rt I E S a N D O B S E Rvat I O N Smentioning

confidence: 99%

Sequential and spontaneous star formation around the mid-infrared halo H ii region KR 140

Kerton

Arvidsson

Knee

et al. 2008

Monthly Notices RAS

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We use Two-Micron All-Sky Survey and Midcourse Space Experiment infrared observations, along with new molecular line (CO) observations, to examine the distribution of young stellar objects (YSOs) in the molecular cloud surrounding the halo H II region KR 140 in order to determine if the ongoing star formation activity in this region is dominated by sequential star formation within the photodissociation region (PDR) surrounding the H II region. We find that KR 140 has an extensive population of YSOs that have 'spontaneously' formed due to processes not related to the expansion of the H II region. Much of the YSO population in the molecular cloud is concentrated along a dense filamentary molecular structure, traced by C 18 O, that has not been erased by the formation of the exciting O star. Some of the previously observed submillimetre clumps surrounding the H II region are shown to be sites of recent intermediateand low-mass star formation while other massive starless clumps clearly associated with the PDR may be the next sites of sequential star formation.Key words: stars: formation -stars: pre-main-sequence -H II regions -infrared: stars. I N T RO D U C T I O NThis study is the fourth in a series of papers exploring the structure of the H II region KR 140 and its associated star-forming activity. In Kerton, Ballantyne & Martin (1999) VES 735, the O star powering the H II region was examined. A second paper, Ballantyne, Kerton & Martin (2000), was a multiwavelength study of the structure, energetics, and kinematics of the H II region. Finally, Kerton et al. (2001) presented an analysis of submillimetre (submm) observations of the region at 450 and 850 μm. The main result of Kerton et al. (2001) was the discovery of numerous submm dust cores located within the molecular gas surrounding the H II region, including a large number of cores that were clearly located at the interface between ionized and molecular gas, a likely location for star formation induced or 'triggered' by the expansion of the H II region (Elmegreen 1998). Two of the more isolated cores were clearly associated with IRAS sources, but the low resolution of IRAS combined with the extensive diffuse emission of dust associated with the H II region made it impossible to determine if any of the other cores were associated with star formation activity.The goal of this study is to determine the distribution of young stellar objects (YSOs) throughout the KR 140 molecular cloud. We focus especially on the embedded stellar content of the submm cores as these are potentially the youngest star-forming regions. E-mail: kerton@iastate.eduWe use the spatial distribution of the YSOs relative to the photodissociation region (PDR) surrounding the H II region as a means of gauging the relative importance of spontaneous and sequential, or triggered, star formation in this region. To achieve this we have analysed a combination of submm data from Kerton et al. (2001) and Moore et al. (2007), Two-Micron All-Sky Survey (2MASS) and Midcourse Space Experiment (MSX)...

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Adicção a drogas e funcionamentos limites: suas expressões e convergências no Rorschach

Cited by 13 publications

References 0 publications

KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds

KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds

AMI limits on 15-GHz excess emission in northern H ii regions

Sequential and spontaneous star formation around the mid-infrared halo H ii region KR 140

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