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相关论文: Multicolour Photometric Study of M31 Globular Clus…

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Wide-field $u'g'r'i'z'$ Dark Energy Camera observations centred on the giant elliptical galaxy NGC5128 covering $\sim21deg^2$ are used to compile a new catalogue of $\sim3200$ globular clusters (GCs). We report 2404 new candidates,…

We use deep images taken with the Advanced Camera for Surveys on board the Hubble Space Telescope of the disk galaxy NGC 891, to search for globular cluster candidates. This galaxy has long been considered to be a close analog in size and…

宇宙学与河外天体物理 · 物理学 2009-11-13 W. E. Harris , M. Mouhcine , M. Rejkuba , R. Ibata

We present wide-field, ground-based Johnson-Cousins UBVRI photometry for 48 Galactic globular clusters based on almost 90000 public and proprietary images. The photometry is calibrated with the latest transformations obtained in the…

太阳与恒星天体物理 · 物理学 2019-03-13 P. B. Stetson , E. Pancino , A. Zocchi , N. Sanna , M. Monelli

We present a catalog of 2,990 extended sources in a 1deg x1deg area centered on M33 using the MegaCam camera on the 3.6m Canada-France-Hawaii telescope (CFHT). The catalog includes 599 new candidate stellar clusters, 204 previously…

星系天体物理 · 物理学 2015-05-19 Izaskun San Roman , Ata Sarajedini , Antonio Aparicio

CFHT Megacam data in (g',r',i') are used to obtain deep, wide-field photometry of the globular cluster system (GCS) around M87. A total of 6200 GCs brighter than M_I = -8.5 are included in the study, essentially containing almost the entire…

星系天体物理 · 物理学 2015-05-13 William E. Harris

We report on the properties of 89 low mass star clusters located in the vicinity of luminous young clusters (blue globulars) in the disk of M31. 82 of the clusters are newly detected. We have determined their integrated magnitudes and…

星系天体物理 · 物理学 2015-05-13 P. W. Hodge , O. K. Krienke , M. Bellazzini , S. Perina , P. Barmby , J. G. Cohen , T. H. Puzia , J. Strader

We present BVI CCD photometry for more than 10,000 stars in the innermost region (0.3' < r <~ 4') of the globular cluster M 3. When added to the previous photographic photometry by Buonanno et al. (1994) reaching as far as r ~ 7', this…

We present results from a study of the globular cluster (GC) systems of four spiral and S0 galaxies imaged as part of an ongoing wide-field survey of the GC systems of giant galaxies. The target galaxies -- the SB0 galaxy NGC1023, the SBb…

宇宙学与河外天体物理 · 物理学 2015-06-11 Michael D. Young , Jessica L. Dowell , Katherine L. Rhode

GC-1 and GC-2 are two globular clusters (GCs) in the remote halo of M81 and M82 in the M81 group discovered by Jang et al. using the {\it Hubble Space Telescope} ({\it HST}) images. These two GCs were observed as part of the…

A new population of extended, luminous globular clusters has recently been discovered in the outskirts of M31. These objects have luminosities typical of classical globular clusters, but much larger half-light radii. We report the first…

天体物理学 · 物理学 2009-11-11 A. D. Mackey , A. Huxor , A. M. N. Ferguson , N. R. Tanvir , M. Irwin , R. Ibata , T. Bridges , R. A. Johnson , G. Lewis

[Abridged] M31 has several times more globular clusters (GCs) than the Milky Way. It contains a correspondingly larger number of low mass X-ray binaries (LMXBs) associated with GCs, and can be used to investigate the GC properties which…

星系天体物理 · 物理学 2015-06-17 J. R. R. Agar , P. Barmby

We perform a detailed study of the Globular Cluster (GC) system in the galaxy NGC5866 based on F435W, F555W, and F625W (~ B, V, and R) HST Advanced Camera for Surveys images. Adopting color, size and shape selection criteria, the final list…

天体物理学 · 物理学 2015-05-13 Cantiello , Michele , Blakeslee , John P. , Raimondo , Gabriella

In this study, we search for Globular Clusters (GCs) in the inner halo of the Circinus galaxy using a combination of observational data. Our dataset includes observations from the VISTA Variables in the V\'ia L\'actea Extended Survey…

星系天体物理 · 物理学 2024-03-06 C. O. Obasi , M. Gomez , D. Minniti , L. D. Baravalle , M. V. Alonso , B. I. Okere

We carry out and analyze new multi-color photometry of the Galactic globular cluster (GC) M75 in UBVI and focus on the brighter sequences of the color- magnitude diagram (CMD), with particular emphasis on their location in U-based CMD.…

天体物理学 · 物理学 2009-11-13 V. Kravtsov , G. Alcaino , G. Marconi , F. Alvarado

Hubble Space Telescope Advanced Camera for Surveys (ACS) images are used to identify and study star cluster candidates in the nearby spiral galaxy M101. About 3000 round, slightly-resolved cluster candidates are identified in 10 ACS…

天体物理学 · 物理学 2010-11-11 P. Barmby , K. D. Kuntz , J. P. Huchra , J. P. Brodie

We present an analysis of high-quality photometry for globular clusters (GCs) in the Virgo cluster core region, based on data from the Next Generation Virgo Cluster Survey (NGVS) pilot field, and in the Milky Way (MW) based on VLT/X-Shooter…

This paper presents 13 color CCD intermediate-band spectrophotometry of a field centered on the open cluster M48 (NGC 2548), from 400nm to nearly 1000nm, taken with Beijing-Arizona-Taiwan-Connecticut (BATC) Multi-Color Survey Photometric…

天体物理学 · 物理学 2009-11-10 Zhen-Yu Wu , Xu Zhou , Jun Ma , Zhao-Ji Jiang , Jian-Sheng Chen

We present a catalog of 4780 extended sources from the outer field of M33. The catalog includes 73 previously identified clusters or planetary nebulae, 1153 likely background galaxies, and 3554 new candidate stellar clusters. The survey is…

天体物理学 · 物理学 2008-05-29 K. Zloczewski , J. Kaluzny , J. Hartman

In this paper, we present internal surface brightness profiles, using images in the F606W and F814W filter bands observed with the Advanced Camera for Surveys on the {\it Hubble Space Telescope}, for ten globular clusters (GCs) in the outer…

宇宙学与河外天体物理 · 物理学 2015-06-04 Song Wang , Jun Ma

The structures of globular clusters (GCs) reflect their dynamical states and past histories. High-resolution imaging allows the exploration of morphologies of clusters in other galaxies. Surface brightness profiles from new Hubble Space…

天体物理学 · 物理学 2009-06-23 P. Barmby , D. E. McLaughlin , W. E. Harris , G. L. H. Harris , D. A. Forbes