Photoelectric Vilnius Photometry in the Direction of the Open Cluster NGC 6910

Vansevičius, Vladas

doi:10.1515/astro-1992-0106

Open Astronomy

1992

DOI: 10.1515/astro-1992-0106

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Photoelectric Vilnius Photometry in the Direction of the Open Cluster NGC 6910

Vladas Vansevičius¹

Abstract: Abstract. Photoelectric Vilnius photometry of 17 stars in the direction of the nucleus of the open cluster NGC 6910 is presented. Spectral types, absolute magnitudes, interstellar extinctions and distances of the stars are determined. The distance of the cluster based on ten O and B stars from the list is evaluated to be 1530 pc, its mean extinction is Ay -3.65 mag and the age is less than 7-10 6 years.

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“…For determination of transformation equations to the standard system we have prepared two standard regions containing stars of different spectral types and having sizes <10'. Such standard region is in the cluster IC 4996 (Vansevicius and Petrauskas, 1989) for the summer sky and in the cluster M67 (Cernis, 1991) for the winter sky.…”

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How to obtain Three-Dimensional Classification of Stars at V = 20?

Straižys¹

1992

Open Astronomy

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mentioning

confidence: 99%

How to obtain Three-Dimensional Classification of Stars at V = 20?

Straižys¹

1992

Open Astronomy

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Unveiling the Physical Conditions in NGC 6910

Kaur

Sharma

Dewangan

et al. 2020

ApJ

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Deep and wide-field optical photometric observations along with multiwavelength archival data sets have been employed to study the physical properties of the cluster NGC 6910. The study also examines the impact of massive stars on their environment. The age, distance, and reddening of the cluster are estimated to be ∼4.5 Myr, 1.72 ± 0.08 kpc, and mag, respectively. The mass function slope (Γ = −0.74 ± 0.15) in the cluster region is found to be flatter than the Salpeter value (−1.35), indicating the presence of an excess number of massive stars. The cluster also shows mass segregation toward the central region due to their formation processes. The distribution of warm dust emission is investigated toward the central region of the cluster, showing the signature of the impact of massive stars within the cluster region. Radio continuum clumps powered by massive B-type stars (age range ∼0.07–0.12 Myr) are traced that are located away from the center of the stellar cluster NGC 6910 (age ∼4.5 Myr). Based on the values of different pressure components exerted by massive stars, the photoionized gas associated with the cluster is found to be the dominant feedback mechanism in the cluster. Overall, the massive stars in the cluster might have triggered the birth of young, massive B-type stars in the cluster. This argument is supported with evidence of the observed age gradient between the cluster and the powering sources of the radio clumps.

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Photoelectric Vilnius Photometry in the Direction of the Open Cluster NGC 6910

Cited by 2 publications

References 2 publications

How to obtain Three-Dimensional Classification of Stars at V = 20?

How to obtain Three-Dimensional Classification of Stars at V = 20?

Unveiling the Physical Conditions in NGC 6910

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