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Related papers: The old metal-poor open cluster ESO 92-SC05: accre…

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To study star formation in low metallicity environments ([M/H] ~ -1 ,dex), we obtained deep near-infrared (NIR) images of Sh 2-207 (S207), which is an HII region in the outer Galaxy with spectroscopically determined metallicity of [O/H] ~=…

Solar and Stellar Astrophysics · Physics 2016-02-17 Chikako Yasui , Naoto Kobayashi , Alan T. Tokunaga , Masao Saito , Natsuko Izumi

We found that 10 metal-poor globular clusters are greately distinguished for anomalously small masses on the "destruction rate--mass" plain. As it turned out, these poor clusters, situated 15 kpc farther from the Galactic centre, are…

Astrophysics · Physics 2008-11-26 T. V. Borkova , V. A. Marsakov

Young open clusters located in the outer Galaxy provide us with an opportunity to study star formation activity in a different environment from the solar neighborhood. We present a UBVI and H alpha photometric study of the young open…

Solar and Stellar Astrophysics · Physics 2015-06-23 Beomdu Lim , Hwankyung Sung , Michael S. Bessell , Jinyoung S. Kim , Hyeonoh Hur , Byeong-Gon Park

We present CCD UBVI photometry of the intermediate old open cluster NGC2660, covering from the red giants region to about seven magnitudes below the main sequence turn-off. Using the synthetic Colour - Magnitude Diagram method, we estimate…

Astrophysics · Physics 2009-10-31 S. Sandrelli , A. Bragaglia , M. Tosi , G. Marconi

We present analysis of deep CCD photometry for the very rich, old open star cluster NGC 6819. These CFH12K data results represent the first of nineteen open star clusters which were imaged as a part of the CFHT Open Star Cluster Survey. We…

We present new estimates of ages and metallicities, based on FORS/VLT optical (4400-5500A) spectroscopy, of 16 dwarf elliptical galaxies (dE's) in the Fornax Cluster and in Southern Groups. These dE's are more metal-rich and younger than…

We present the results of photometric measurements from images of the LMC cluster ESO 121-SC03 taken with HST/ACS. Our resulting CMD reaches 3 magnitudes below the main-sequence turn-off, representing the deepest observation of this cluster…

Astrophysics · Physics 2009-11-11 A. D. Mackey , M. J. Payne , G. F. Gilmore

The Galactic Anticenter Stellar Structure (GASS) has been identified with excess surface densities of field stars in several large area sky surveys, and with an unusual, string-like grouping of five globular clusters. At least two of these…

The outer parts of the Milky Way disk are believed to be one of the main arenas where the accretion of external material in the form of dwarf galaxies and subsequent formation of streams is taking place. The Monoceros stream and the Canis…

We present the results of medium-resolution spectroscopy of 28 globular clusters (GCs) in six nearby galaxies of different luminosities and morphological types, situated in: M33 (15 objects), M31 (3), IC10 (4), UGCA86 (4), HolmbergIX (1),…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Margarita E. Sharina , Rupali Chandar , Thomas H. Puzia , Paul Goudfrooij , Emmanuel Davoust

We present the first $BVI$ CCD photometry to $V=22.0$ of 4 fields centered on the region of the southern Galactic star clusters Ruprecht~61, Czernik~32, NGC 2225 and NGC 2262 and of 4 displaced control fields. These clusters were never…

Astrophysics · Physics 2009-11-13 G. Carraro , G. Baume , R. Vazquez , A. Moitinho , D. Geisler

BVI photometry (from South Africa Astron. Obs.), Echelle high resolution spectroscopy and AFOSC integral field spectroscopy (from Asiago, Italy) of the young open cluster NGC 6604 are presented. Age, distance, reddening, membership, radial…

Astrophysics · Physics 2009-10-31 R. Barbon , G. Carraro , U. Munari , T. Zwitter , L. Tomasella

(Abridged) - The combination of several mass-decreasing processes may critically affect the structure of open clusters (OCs), to the point that most dissolve into the field in a time-scale shorter than $\approx1$ Gyr. In this paper we focus…

Astrophysics · Physics 2009-11-13 Charles Bonatto , Eduardo Bica

In this paper, we present the results of a detailed photometric analysis of Glimpse-C02, one of the most extincted globular clusters of the Milky Way. We built a deep color magnitude diagram spanning $\approx$ 10 magnitudes, enabling the…

NGC 2355 is an old open cluster in the outer part of the galactic disk (l=203 deg, b=+11 deg) which has been little studied until now. This paper presents the first astrometric and spectroscopic investigation of this cluster. We have…

Astrophysics · Physics 2007-05-23 C. Soubiran , M. Odenkirchen , J. -F. Le Campion

The three open clusters Be 15, Be 80, and NGC 2192 have been observed using CCD UBV(RI)_C photometry at the San Pedro M\'artir Observatory, M\'exico within the framework of our open-cluster survey. The fundamental parameters of interstellar…

Solar and Stellar Astrophysics · Physics 2015-05-14 M. T. Tapia , W. J. Schuster , R. Michel , C. Chavarría-K. , W. S. Dias , R. Vázquez , A. Moitinho

Accurate and deep BVI CCD photometry is presented for the core regions of six southern compact open clusters (supplemented in one case by U and R bands). These clusters generally have only scanty photometric data published, in some case…

Astrophysics · Physics 2009-11-10 Giovanni Carraro , Ulisse Munari

We analyse the spatially-resolved stellar populations of 9 local ($z<0.1$) Brightest Cluster Galaxies (BCGs) observed with VIMOS in IFU mode. Our sample is composed of 7 slow-rotating and 2 fast-rotating BCGs. We do not find a connection…

We present the results of BV(RI)_KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster,…

Astrophysics · Physics 2007-05-23 L. P. Bassino , S. Waldhausen , R. E. Martinez

Context. Recent evidences from spectroscopic surveys point towards the presence of a metal-poor, young stellar population in the chemical thin disk. In this context, the investigation of the spatial distribution and time evolution of…