HST color-magnitude diagrams of 74 galactic globular clusters in the HST F439W and F555W bands ⋆

By G. Piotto, I. King, S. George Djorgovski, C. Sosin, M. Zoccali, I. Saviane, F. Angeli, M. Riello, A. R. Blanco, R. Rich and 2 more. 2002

260 citations recorded by the source corpus.

We present the complete photometric database and the color-magnitude diagrams for 74 Galactic globular clusters observed with the HST/WFPC2 camera in the F439W and F555W bands. A detailed discussion of the various reduction steps is also presented, and of the procedures to transform instrumental magnitudes into both the HST F439W and F555W flight system and the standard Johnson B and V systems. We also describe the artificial star experiments which have been performed to derive the star count completeness in all the relevant branches of the color magnitude diagram. The entire photometric database and the completeness function will be made available on the Web immediately after the publication of the present paper.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/518b86bdb2eb847713e487ec29128e0f3f922902

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In Astronomy and Astrophysics

1. Jay Anderson
2. H. Baumgardt
3. G. Piotto
4. A. Milone
5. L. Bedin
6. C. Conroy
7. A. Bragaglia
8. R. Gratton

In Instrumentation

1. Jay Anderson
2. E. Carretta
3. R. Gratton
4. A. Bragaglia
5. G. Piotto
6. A. Milone
7. L. Bedin
8. C. Conroy

Citations in the corpus

• Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations (2007, methodology): “These arrows were computed by Schiavon et al. (2004b), from a combination of the color-magnitude diagram of M 5 (from Piotto et al. 2002) and the fitting functions presented here.”
• Comparing the properties of local globular cluster systems: implications for the formation of the Galactic halo (2004, methodology): “This is exactly the result of Shara et al. (1998) who find NGC 121 to be younger than the oldest Galactic globular clusters by2 − 3 Gyr, using a WFPC2 CMD.”
• THE ACS SURVEY OF GLOBULAR CLUSTERS. V. GENERATING A COMPREHENSIVE STAR CATALOG FOR EACH CLUSTER (2008, methodology): “Piotto et al. (2002) used WFPC2 snapshots to image the central regions of 74 clusters and construct CMDs in a uniform photometric system.”
• THE ACS SURVEY OF GALACTIC GLOBULAR CLUSTERS. IX. HORIZONTAL BRANCH MORPHOLOGY AND THE SECOND PARAMETER PHENOMENON (2009, methodology): “RecioBlanco et al. (2006) analyzed the properties of 54 Galactic GCs with homogeneous photometry from an HST WFPC2 Snapshot Survey (Piotto et al. 2002) and concluded that more massive GCs tend to have more extended blue HBs. Recio-Blanco et al. (2006) recognized a link between the effective…”
• Relative Frequencies of Blue Stragglers in Galactic Globular Clusters: Constraints for the Formation Mechanisms (2004, methodology): “The numbers of BSS and HB stars have been corrected for completeness (details in Piotto et al. 2002) before calculating FBSS.”
• Constraining the mass and radius of neutron stars in globular clusters (2017, unknown): “Using the distance modulus of Recio-Blanco et al. (2005) and the extinction estimate of Piotto et al. (2002) (following Guillot et al. 2013) gives a distance of 6.22±0.26 kpc.”
• THE MASS AND RADIUS OF THE NEUTRON STAR IN 4U 1820−30 (2010, methodology): “NGC 6624 is a metal-rich globular cluster with an iron abundance of [Fe/H ] = −0.63± 0.1 that is determined from high resolution infrared spectroscopy with the WFPC2 camera on the Hubble Space Telescope (Heasley et al. 2000; see also Piotto et al. 2002).”
• The second and third parameters of the horizontal branch in globular clusters (2010, methodology): “In the following, we considered B and V colours obtained from the HST photometry through the transformations given by Piotto et al. (2002).”
• A complete N-body model of the old open cluster M67 (2005, background): “As such, they are the focus of many observational programmes, both from the ground (e.g. Kalirai et al. 2003; Kafka et al. 2004) and space (e.g. Grindlay et al. 2001; Piotto et al. 2002; Richer et al. 2004).”
• A New Version of Reimers’ Law of Mass Loss Based on a Physical Approach (2005, unknown): “We use the photometric data and metallicities provided by Piotto et al. (2002) and have plotted our evolution tracks directly into their cluster CMDs.”
• Evolutionary population synthesis: models, analysis of the ingredients and application to high‐z galaxies (2004, background): “The stellar evolutionary phases are highlightedon the observed colour magnitude diagram of NGC 1851, a metal-poor GC of the Milky Way (data from Piotto et al. 2002).”
• Abundances in a Large Sample of Stars in M3 and M13 (2004, background): “The area in M13 covered by the work of Johnson & Bolte (1998), Rosenberg et al. (2000), and by Piotto et al. (2002) does not overlap with our stars; nor does that of the IR photometry of Davidge & Courteau (1999) and of Valenti et al. (2004).”
• The dragon simulations: globular cluster evolution with a million stars (2016, methodology): “The distance modulus is (m − M)V = 15.0 mag (Harris 1996) and the interstellar extinction E(B − V ) ≈ 0.39 mag (Piotto et al. 2002).”
• MEASUREMENT OF THE RADIUS OF NEUTRON STARS WITH HIGH SIGNAL-TO-NOISE QUIESCENT LOW-MASS X-RAY BINARIES IN GLOBULAR CLUSTERS (2012, methodology): “The reddening in this band for NGC 6304 was not provided in the published work, but the value E (B − V ) = 0.52 (Piotto et al. 2002) can be used instead.”
• Near-Infrared Properties of 24 Globular Clusters in the Galactic Bulge (2006, methodology): “Since the discovery by Rich et al. (1997) of an extended blue HB (as well as in NGC 6441) in itsHST-based CMD, NGC 6388 has been the subject of several optical photometric studies (see, e.g., Moehler et al. 1999; Piotto et al. 2002; Pritzl et al. 2002; and references therein).”
• The ACS survey of Galactic globular clusters. XII. Photometric binaries along the main sequence (2011, methodology): “We used the counts of BSS derived by Moretti et al. (2008) from the WFPC2 photometric catalogs published by Piotto et al. (2002).”
• GLOBULAR CLUSTERS IN THE OUTER GALACTIC HALO: NEW HUBBLE SPACE TELESCOPE/ADVANCED CAMERA FOR SURVEYS IMAGING OF SIX GLOBULAR CLUSTERS AND THE GALACTIC GLOBULAR CLUSTER AGE–METALLICITY RELATION (2011, background): “Of the six, only IC 4499 has previous HST photometry (Piotto et al. 2002), and it is not of sufficient depth to allow an accurate age determination.”