IRAS Sources Associated With Small Nebulae in Star Forming Regions: Optical and Near Infrared Images

Tapia, M.; Persi, P.; Bohigas, J.; Ferrari-Toniolo, M.

doi:10.1086/118390

Cited by 40 publications

(55 citation statements)

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“…10). We conclude that this star is possibly a PMS around B5, hot enough (T ≈ 14 300 K, Siess et al 2000) to provide ionization to the nebula, without the need of a larger distance as given in Tapia et al (1997). In Fig.…”

Section: The Cluster In the Nebula Gy 3-7mentioning

confidence: 50%

“…This distance would imply an association to CMaR1, with estimated distances in the range 1.05-1.2 kpc (Shevchenko 1999;Soares & Bica 2002). Tapia et al (1997) suggested at least a factor two larger to explain ionizition in the nebula.…”

Section: The Cluster In the Nebula Gy 3-7mentioning

confidence: 93%

“…The reflexion nebula vdB-RN 92 was identified by van den Bergh (1966); it contains embedded stars, forming a small clustering as pointed out by himself. Gyulbudaghian (1984) identified a small nebula in CMaR1 -Gy 3-7, which was reported to contain a star cluster by Tapia et al (1997).…”

Section: Introductionmentioning

confidence: 98%

“…u-strasbg.fr) vdB-RN 92 includes the B1.5V star BD-11 1763, as well as the infrared source IRAS 07016-1129. Tapia et al (1997) report young stellar objects in the Send offprint requests to: J. B. Soares, e-mail: jules@if.ufrgs.br range B1-B5 for Gy 3-7.…”

Section: Introductionmentioning

confidence: 99%

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The embedded star clusters in the nebulae vdB-RN 92 and Gy 3–7 in Canis Majoris R1

Soares

Bica

2003

A&A

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Abstract. We employed J, H and K s photometry from the 2MASS Point Source Catalogue to study the embedded star clusters in the nebulae vdB-RN 92 and Gy 3-7, which are located in the molecular cloud Canis Majoris R1. We employed colourcolour and colour-magnitudes diagrams together with theoretical pre-main sequence isochrones to derive their fundamental parameters. Ages are based on the fraction of stars with anomalous colours, supposedly of types Herbig AeBe and T Tauri. The vdB-RN 92 cluster has an age of 5-7 Myr and the Gy 3-7 cluster ≈2 Myr. The average reddening values are A V = 4.4 and A V = 6.3, respectively for vdB-RN 92 and Gy 3-7. The distance found for vdB-RN 92 was 1.5 kpc which is, within uncertainties, compatible with previous estimates for the complex. Gy 3-7 also appears to be related to the CMaR1 complex. We conclude that CMaR1 is a very active star-forming site, now with four star clusters in early evolutionary stages.

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Section: The Cluster In the Nebula Gy 3-7mentioning

confidence: 50%

Section: The Cluster In the Nebula Gy 3-7mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The embedded star clusters in the nebulae vdB-RN 92 and Gy 3–7 in Canis Majoris R1

Soares

Bica

2003

A&A

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“…In conjugation with deep optical photometric data the identified PMS can be better characterized (e.g., mass, age) by comparing their positions on the HR digram with the theoretical evolutionary models. The characterization PMS stars are essential to derive the cluster properties and to understand its star formation history (e.g., Lada & Lada 1991;Persi et al 1994;Tapia et al 1997;Ojha et al 2004). We therefore studied the cluster with multiwavelength photometric data to have a better picture on the cluster properties and star formation activity.…”

Section: Introductionmentioning

confidence: 99%

The young cluster NGC 2282: a multiwavelength perspective

Dutta¹,

Mondal²,

Jose³

et al. 2015

Mon. Not. R. Astron. Soc.

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We present the analysis of the stellar content of NGC 2282, a young cluster in the Monoceros constellation, using deep optical BV I and IPHAS photometry along with infrared (IR) data from UKIDSS and Spitzer-IRAC. Based on the stellar surface density analysis using nearest neighborhood method, the radius of the cluster is estimated as ∼ 3.15 ′ . From optical spectroscopic analysis of 8 bright sources, we have classified three early B-type members in the cluster, which includes, HD 289120, a previously known B2V type star, a Herbig Ae/Be star (B0.5 Ve) and a B5 V star. From spectrophotometric analyses, the distance to the cluster has been estimated as ∼ 1.65 kpc. The K-band extinction map is estimated using nearest neighborhood technique, and the mean extinction within the cluster area is found to be A V ∼ 3.9 mag. Using IR colour-colour criteria and H α -emission properties, we have identified a total of 152 candidate young stellar objects (YSOs) in the region, of which, 75 are classified as Class II, 9 are Class I YSOs. Our YSO catalog also includes 50 H α -emission line sources, identified using slitless spectroscopy and IPHAS photometry data. Based on the optical and near-IR colour-magnitude diagram analyses, the cluster age has been estimated to be in the range of 2 − 5 Myr, which is in agreement with the estimated age from disc fraction (∼ 58%). Masses of these YSOs are found to be ∼ 0.1−2.0 M ⊙ . Spatial distribution of the candidate YSOs shows spherical morphology, more or less similar to the surface density map.

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Molecular Clouds Toward a New OB Association in Pup-CMa

2005

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We have mapped 16 molecular clouds toward a new OB association in the Pup-CMa region to derive their physical properties. The observations were carried out in the 12 CO (J = 1 -0) line with the Southern millimetrewave Telescope at Cerro Tololo, Chile. Distances have been determined kinematically using the rotation curve of Brand with 5 8. R = ¤ kpc and 220 = ¤ V km/s. Masses have been derived adopting a CO luminosity toH 2 conversion factor X = 3.8 . 10 20 molecules cm -2 (K km/s) -1 . The observed mean radial velocity of the clouds is comparable with the mean radial velocity of stars composing an OB association in Pup-CMa; it is in favor of the close connection of clouds with these stars.

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IRAS Sources Associated With Small Nebulae in Star Forming Regions: Optical and Near Infrared Images

Cited by 40 publications

References 0 publications

The embedded star clusters in the nebulae vdB-RN 92 and Gy 3–7 in Canis Majoris R1

The embedded star clusters in the nebulae vdB-RN 92 and Gy 3–7 in Canis Majoris R1

The young cluster NGC 2282: a multiwavelength perspective

Molecular Clouds Toward a New OB Association in Pup-CMa

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