Globular and Open Clusters Observed by SDSS/SEGUE: the Giant Stars
Abstract
We present griz observations for the clusters M92, M13 and NGC 6791 and gr photometry for M71, Be 29 and NGC 7789. In addition we present new membership identifications for all these clusters, which have been observed spectroscopically as calibrators for the SDSS/SEGUE survey; this paper focuses in particular on the red giant branch stars in the clusters. In a number of cases, these giants were too bright to be observed in the normal SDSS survey operations, and we describe the procedure used to obtain spectra for these stars. For M71, also present a new variable reddening map and a new fiducial for the gr giant branch. For NGC 7789, we derived a transformation from Teff to g-r for giants of near solar abundance, using IRFM Teff measures of stars with good ugriz and 2MASS photometry and SEGUE spectra. The result of our analysis is a robust list of known cluster members with correctly dereddened and (if needed) transformed gr photometry for crucial calibration efforts for SDSS and SEGUE.
- Authors:
-
- Case Western Reserve Univ., Cleveland, OH (United States)
- Grove City College, PA (United States)
- Ewha Womans Univ., Seoul (Korea, Rep. of)
- Case Western Reserve Univ., Cleveland, OH (United States); Michigan State Univ., East Lansing, MI (United States)
- Case Western Reserve Univ., Cleveland, OH (United States); Univ. of Wisconsin, Madison, WI (United States)
- Australian National Univ., Canberra, ACT (Australia)
- Univ. of California, Santa Cruz, CA (United States)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Univ. of Notre Dame, IN (United States)
- The Ohio State Univ., Columbus, OH (United States)
- Pennsylvania State Univ., University Park, PA (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1249201
- Report Number(s):
- arXiv:1511.03606; FERMILAB-PUB-15-632-AE
Journal ID: ISSN 1538-3881; 1423502
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astronomical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astronomical Journal (Online); Journal Volume: 151; Journal Issue: 1; Journal ID: ISSN 1538-3881
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Morrison, Heather L., Ma, Zhibo, Clem, James L., An, Deokkeun, Connor, Thomas, Schechtman-Rook, Andrew, Casagrande, Luca, Rockosi, Constance, Yanny, Brian, Harding, Paul, Beers, Timothy C., Johnson, Jennifer A., and Schneider, Donald P. Globular and Open Clusters Observed by SDSS/SEGUE: the Giant Stars. United States: N. p., 2015.
Web. doi:10.3847/0004-6256/151/1/7.
Morrison, Heather L., Ma, Zhibo, Clem, James L., An, Deokkeun, Connor, Thomas, Schechtman-Rook, Andrew, Casagrande, Luca, Rockosi, Constance, Yanny, Brian, Harding, Paul, Beers, Timothy C., Johnson, Jennifer A., & Schneider, Donald P. Globular and Open Clusters Observed by SDSS/SEGUE: the Giant Stars. United States. https://doi.org/10.3847/0004-6256/151/1/7
Morrison, Heather L., Ma, Zhibo, Clem, James L., An, Deokkeun, Connor, Thomas, Schechtman-Rook, Andrew, Casagrande, Luca, Rockosi, Constance, Yanny, Brian, Harding, Paul, Beers, Timothy C., Johnson, Jennifer A., and Schneider, Donald P. Fri .
"Globular and Open Clusters Observed by SDSS/SEGUE: the Giant Stars". United States. https://doi.org/10.3847/0004-6256/151/1/7. https://www.osti.gov/servlets/purl/1249201.
@article{osti_1249201,
title = {Globular and Open Clusters Observed by SDSS/SEGUE: the Giant Stars},
author = {Morrison, Heather L. and Ma, Zhibo and Clem, James L. and An, Deokkeun and Connor, Thomas and Schechtman-Rook, Andrew and Casagrande, Luca and Rockosi, Constance and Yanny, Brian and Harding, Paul and Beers, Timothy C. and Johnson, Jennifer A. and Schneider, Donald P.},
abstractNote = {We present griz observations for the clusters M92, M13 and NGC 6791 and gr photometry for M71, Be 29 and NGC 7789. In addition we present new membership identifications for all these clusters, which have been observed spectroscopically as calibrators for the SDSS/SEGUE survey; this paper focuses in particular on the red giant branch stars in the clusters. In a number of cases, these giants were too bright to be observed in the normal SDSS survey operations, and we describe the procedure used to obtain spectra for these stars. For M71, also present a new variable reddening map and a new fiducial for the gr giant branch. For NGC 7789, we derived a transformation from Teff to g-r for giants of near solar abundance, using IRFM Teff measures of stars with good ugriz and 2MASS photometry and SEGUE spectra. The result of our analysis is a robust list of known cluster members with correctly dereddened and (if needed) transformed gr photometry for crucial calibration efforts for SDSS and SEGUE.},
doi = {10.3847/0004-6256/151/1/7},
journal = {The Astronomical Journal (Online)},
number = 1,
volume = 151,
place = {United States},
year = {Fri Dec 18 00:00:00 EST 2015},
month = {Fri Dec 18 00:00:00 EST 2015}
}
Web of Science
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Works referencing / citing this record:
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