Skip to main content Accessibility help
×
Home

RR Lyrae Stars in the Globular Cluster NGC 6101

  • M. T. Fitzgerald (a1) (a2), J. Criss (a3), T. Lukaszewicz (a3), D. J. Frew (a1) (a2), M. Catelan (a4), S. Woodward (a3), L. Danaia (a5) and D. H. McKinnon (a5)...

Abstract

V- and I-band observations were taken over 9 months to study the RR Lyrae population in the metal-poor diffuse globular cluster NGC 6101. We identify one new variable, which is either a potential long-period red giant variable or eclipsing binary, and recover all previously identified RR Lyraes. One previously studied RR Lyrae is reclassified as an RRc type, while two period estimations have been significantly refined. We confirm that NGC6101 is Oosterhoff type II with a high ratio of n(c)/n(ab + c) = 0.833 with a very long mean RRab period of 0.86 d. By using theoretical RRLyrae period-luminosity-metallicity relations, we use our V- and I-band RR Lyrae data to gain an independent estimate of the reddening towards this cluster of E(BV) = 0.15 ± 0.04 and derive a distance of 12.8 ± 0.8 kpc. The majority of the work in this study was undertaken by upper secondary school students involved in the Space to Grow astronomy education project in Australia.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      RR Lyrae Stars in the Globular Cluster NGC 6101
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      RR Lyrae Stars in the Globular Cluster NGC 6101
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      RR Lyrae Stars in the Globular Cluster NGC 6101
      Available formats
      ×

Copyright

Corresponding author

FCorresponding author. Email: mfitzasp@gmail.com

References

Hide All
Alcaino, G., 1974, A&AS, 18, 9
Alcock, C., et al. , 2000, AJ, 542, 257
Bailey, S. I., 1902, AnHar, 38, 1
Catelan, M., Pritzl, B. J. & Smith, H. A., 2004, ApJS, 154, 633
Catelan, M., et al. , 2006, MmSAI, 77, 202
Clement, C. M., et al. , 2001, AJ, 122, 2587
Cohen, R. E., Sarajedini, A., Kinemuchi, K. & Leiton, R., 2011, AJ, 727, 1
Dotter, A., et al. , 2010, AJ, 708, 698
Frew, D. J., et al. , 2011, PASA, 28, 83
Geisler, D., Piatti, A. E., Claria, J. J. & Minniti, D., 1995, AJ, 109, 605
Harris, W. E., 1996, AJ, 112, 1487
Kraft, R. P. & Ivans, I. I., 2003, PASP, 115, 143
Landolt, A. U., 1992, AJ, 104, 340
Liller, M. H., 1981, AJ, 86, 1204
Rosenberg, A., Piotto, G., Saviane, I. & Aparicio, A., 2000, A&AS, 144, 5
Rutledge, G. A., Hesser, J. E., Stetson, P. B., Mateo, M., Simard, L., Bolte, M., Friel, E. D. & Copin, Y., 1997, PASP, 109, 883
Sarajedini, A. & Da Costa, G. S., 1991, AJ, 102, 628
Sarajedini, A., et al. , 2007, AJ, 133, 1658

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed