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Astrophysics and Space Science

, Volume 355, Issue 1, pp 117–122 | Cite as

WFPC2 UV survey of Galactic globular clusters. The Horizontal Branch temperature distribution

  • E. P. Lagioia
  • E. Dalessandro
  • F. R. Ferraro
  • B. Lanzoni
  • M. Salaris
Original Article

Abstract

Ultraviolet observations are the best tool to study hot stellar populations which emit most of their light at short wavelengths. As part of a large project devoted to the characterization of the UV properties of Galactic globular clusters (GGCs), we collected mid/far UV and optical images with the WFPC2@HST for 31 GGCs. These clusters cover a wide range in metallicity and structural parameters, thus representing an ideal sample for comparison with theoretical models. Here we present the first results from an ongoing analysis aimed at deriving the temperature distribution of Horizontal Branch stars in GGCs.

Keywords

Globular clusters: hot stars Horizontal Branch NGC 5139 NGC 6293 

Notes

Acknowledgement

This research is part of the project COSMIC-LAB funded by the European Research Council, under contract ERC-2010-AdG-267675.

References

  1. Babu, G.J., Chattopadhyay, T., Chattopadhyay, A.K., Mondal, S.: Astrophys. J. 700, 1768 (2009) ADSCrossRefGoogle Scholar
  2. Baggett, S., Casertano, S., Gonzaga, S., Ritchie, C.: Space telescope WFPC2. Instrument Science report, 10 (1997) Google Scholar
  3. Baggett, S., et al.: In: Mobasher, B. (ed.) HST WFPC2 Data Handbook, v. 4.0, STScI Baltimore (2002) Google Scholar
  4. Bedin, L.R., Piotto, G., Anderson, J., et al.: Astrophys. J. Lett. 605, L125 (2004) ADSCrossRefGoogle Scholar
  5. Bellini, A., Bedin, L.R., Piotto, G., et al.: Astron. J. 140, 631 (2010) ADSCrossRefGoogle Scholar
  6. Calamida, A., Bono, G., Stetson, P.B., et al.: Astrophys. J. 706, 1277 (2009) ADSCrossRefGoogle Scholar
  7. Cassisi, S., Salaris, M., Castelli, F., Pietrinferni, A.: Astrophys. J. 616, 498 (2004) ADSCrossRefGoogle Scholar
  8. Cassisi, S., Salaris, M., Anderson, J., et al.: Astrophys. J. 702, 1530 (2009) ADSCrossRefGoogle Scholar
  9. Catelan, M.: Astrophys. Space Sci. 320, 261 (2009) ADSCrossRefGoogle Scholar
  10. Clement, C.M., Muzzin, A., Dufton, Q., et al.: Astron. J. 122, 2587 (2001) ADSCrossRefGoogle Scholar
  11. Contreras Ramos, R., Ferraro, F.R., Dalessandro, E., Lanzoni, B., Rood, R.T.: Astrophys. J. 748, 91 (2012) ADSCrossRefGoogle Scholar
  12. Dalessandro, E., Lanzoni, B., Ferraro, F.R., et al.: Astrophys. J. 681, 311 (2008) ADSCrossRefGoogle Scholar
  13. Dalessandro, E., Beccari, G., Lanzoni, B., et al.: Astrophys. J. Suppl. Ser. 182, 509 (2009) ADSCrossRefGoogle Scholar
  14. Dalessandro, E., Salaris, M., Ferraro, F.R., et al.: Mon. Not. R. Astron. Soc. 410, 694 (2011) ADSCrossRefGoogle Scholar
  15. Dalessandro, E., Schiavon, R.P., Rood, R.T., et al.: Astron. J. 144, 126 (2012) ADSCrossRefGoogle Scholar
  16. Dalessandro, E., Salaris, M., Ferraro, F.R., Mucciarelli, A., Cassisi, S.: Mon. Not. R. Astron. Soc. 430, 459 (2013a) ADSCrossRefGoogle Scholar
  17. Dalessandro, E., Ferraro, F.R., Lanzoni, B., et al.: Astrophys. J. 770, 45459 (2013b) CrossRefGoogle Scholar
  18. D’Antona, F., Caloi, V., Ventura, P.: Mon. Not. R. Astron. Soc. 405, 2295 (2010) ADSGoogle Scholar
  19. D’Cruz, N.L., O’Connell, R.W., Rood, R.T., et al.: Astrophys. J. 530, 352 (2000) ADSCrossRefGoogle Scholar
  20. de Boer, K.S.: Astron. Astrophys. 142, 321 (1985) ADSGoogle Scholar
  21. Dolphin, A.E.: Publ. Astron. Soc. Pac. 121, 655 (2009) ADSCrossRefGoogle Scholar
  22. Dotter, A., Sarajedini, A., Anderson, J., et al.: Astrophys. J. 708, 698 (2010) ADSCrossRefGoogle Scholar
  23. Ferraro, F.R.: (2006). arXiv:astro-ph/0601217
  24. Ferraro, F.R., Paltrinieri, B., Fusi Pecci, F., et al.: Astron. Astrophys. 324, 915 (1997a) ADSGoogle Scholar
  25. Ferraro, F.R., Paltrinieri, B., Fusi Pecci, F., et al.: Astrophys. J. Lett. 484, L145 (1997b) ADSCrossRefGoogle Scholar
  26. Ferraro, F.R., Paltrinieri, B., Pecci, F.F., Rood, R.T., Dorman, B.: Astrophys. J. 500, 311 (1998) ADSCrossRefGoogle Scholar
  27. Ferraro, F.R., Sills, A., Rood, R.T., Paltrinieri, B., Buonanno, R.: Astrophys. J. 588, 464 (2003) ADSCrossRefGoogle Scholar
  28. Ferraro, F.R., Sollima, A., Pancino, E., et al.: Astrophys. J. Lett. 603, L81 (2004) ADSCrossRefGoogle Scholar
  29. Ferraro, F.R., Sollima, A., Rood, R.T., et al.: Astrophys. J. 638, 433 (2006) ADSCrossRefGoogle Scholar
  30. Ferraro, F.R., Lanzoni, B., Dalessandro, E., et al.: Nature 492, 393 (2012) ADSCrossRefGoogle Scholar
  31. Freeman, K.C., Norris, J.: Annu. Rev. Astron. Astrophys. 19, 319 (1981) ADSCrossRefGoogle Scholar
  32. Fusi Pecci, F., Ferraro, F.R., Bellazzini, M., et al.: Astron. J. 105, 1145 (1993) ADSCrossRefGoogle Scholar
  33. Gratton, R.G., Carretta, E., Bragaglia, A., Lucatello, S., D’Orazi, V.: Astron. Astrophys. 517, A81 (2010) ADSCrossRefGoogle Scholar
  34. Gratton, R.G., Johnson, C.I., Lucatello, S., D’Orazi, V., Pilachowski, C.: Astron. Astrophys. 534, A72 (2011) ADSCrossRefGoogle Scholar
  35. Harris, W.E.: Astron. J. 112, 1487 (1996) ADSCrossRefGoogle Scholar
  36. Johnson, C.I., Pilachowski, C.A., Michael Rich, R., Fulbright, J.P.: Astrophys. J. 698, 2048 (2009) ADSCrossRefGoogle Scholar
  37. Lee, Y.-W., Demarque, P., Zinn, R.: Astrophys. J. 423, 248 (1994) ADSCrossRefGoogle Scholar
  38. Moehler, S., Heber, U., de Boer, K.S.: Astron. Astrophys. 294, 65 (1995) ADSGoogle Scholar
  39. Moehler, S., Sweigart, A.V., Landsman, W.B., Hammer, N.J., Dreizler, S.: Astron. Astrophys. 415, 313 (2004) ADSCrossRefGoogle Scholar
  40. Moehler, S., Dreizler, S., Lanz, T., et al.: Astron. Astrophys. 475, L5 (2007) ADSCrossRefGoogle Scholar
  41. Origlia, L., Ferraro, F.R., Bellazzini, M., Pancino, E.: Astrophys. J. 591, 916 (2003) ADSCrossRefGoogle Scholar
  42. Pancino, E., Mucciarelli, A., Bonifacio, P., Monaco, L., Sbordone, L.: Astron. Astrophys. 534, A53 (2011) ADSCrossRefGoogle Scholar
  43. Pietrinferni, A., Cassisi, S., Salaris, M., Castelli, F.: Astrophys. J. 642, 797 (2006) ADSCrossRefGoogle Scholar
  44. Piotto, G., Villanova, S., Bedin, L.R., et al.: Astrophys. J. 621, 777 (2005) ADSCrossRefGoogle Scholar
  45. Recio-Blanco, A., Aparicio, A., Piotto, G., de Angeli, F., Djorgovski, S.G.: Astron. Astrophys. 452, 875 (2006) ADSCrossRefGoogle Scholar
  46. Rood, R.T.: Astrophys. J. 184, 815 (1973) ADSCrossRefGoogle Scholar
  47. Sanna, N., Dalessandro, E., Lanzoni, B., et al.: Mon. Not. R. Astron. Soc. 422, 1171 (2012) ADSCrossRefGoogle Scholar
  48. Sanna, N., Dalessandro, E., Ferraro, F.R., et al.: Astrophys. J. 780, 90 (2014) ADSCrossRefGoogle Scholar
  49. Salaris, M., de Boer, T., Tolstoy, E., Fiorentino, G., Cassisi, S.: Astron. Astrophys. 559, A57 (2013) CrossRefGoogle Scholar
  50. Schiavon, R.P., Dalessandro, E., Sohn, S.T., et al.: Astron. J. 143, 121 (2012) ADSCrossRefGoogle Scholar
  51. Sollima, A., Ferraro, F.R., Origlia, L., Pancino, E., Bellazzini, M.: Astron. Astrophys. 420, 173 (2004) ADSCrossRefGoogle Scholar
  52. Sollima, A., Ferraro, F.R., Pancino, E., Bellazzini, M.: Mon. Not. R. Astron. Soc. 357, 265 (2005) ADSCrossRefGoogle Scholar
  53. Sollima, A., Ferraro, F.R., Bellazzini, M., et al.: Astrophys. J. 654, 915 (2007) ADSCrossRefGoogle Scholar
  54. Stetson, P.B.: Publ. Astron. Soc. Pac. 99, 191 (1987) ADSCrossRefGoogle Scholar
  55. Stetson, P.B.: Publ. Astron. Soc. Pac. 102, 932 (1990) ADSCrossRefGoogle Scholar
  56. Stetson, P.B.: Publ. Astron. Soc. Pac. 106, 250 (1994) ADSCrossRefGoogle Scholar
  57. Sweigart, A.V.: Astrophys. J. Suppl. Ser. 65, 95 (1987) ADSCrossRefGoogle Scholar
  58. Valenti, E., Ferraro, F.R., Origlia, L.: Astron. J. 133, 1287 (2007) ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • E. P. Lagioia
    • 1
  • E. Dalessandro
    • 1
  • F. R. Ferraro
    • 1
  • B. Lanzoni
    • 1
  • M. Salaris
    • 2
  1. 1.Department of Physics and AstronomyUniversity of BolognaBolognaItaly
  2. 2.Astrophysics Research InstituteLiverpool John Moores UniversityLiverpoolUK

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