Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample
We present the first gri -band period–luminosity (PL) and period–Wesenheit (PW) relations for the fundamental mode anomalous Cepheids. These PL and PW relations were derived from a combined sample of five anomalous Cepheids in globular cluster M92 and the Large Magellanic Cloud, both of which have d...
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IOP Publishing
2022-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ac8df2 |
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| author | Chow-Choong Ngeow Anupam Bhardwaj Matthew J. Graham Steven L. Groom Frank J. Masci Reed Riddle |
| author_facet | Chow-Choong Ngeow Anupam Bhardwaj Matthew J. Graham Steven L. Groom Frank J. Masci Reed Riddle |
| author_sort | Chow-Choong Ngeow |
| collection | DOAJ |
| description | We present the first gri -band period–luminosity (PL) and period–Wesenheit (PW) relations for the fundamental mode anomalous Cepheids. These PL and PW relations were derived from a combined sample of five anomalous Cepheids in globular cluster M92 and the Large Magellanic Cloud, both of which have distance accurate to ∼1% available from literature. Our g -band PL relation is similar to the B -band PL relation as reported in previous study. We applied our PL and PW relations to anomalous Cepheids discovered in dwarf galaxy Crater II, and found a larger but consistent distance modulus than the recent measurements based on RR Lyrae. Our calibrations of gri -band PL and PW relations, even though less precise due to small number of anomalous Cepheids, will be useful for distance measurements to dwarf galaxies. |
| first_indexed | 2024-03-12T03:35:17Z |
| format | Article |
| id | doaj.art-fa85f68b4f34493dbc969c6694bafd4b |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-12T03:35:17Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
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| series | The Astronomical Journal |
| spelling | doaj.art-fa85f68b4f34493dbc969c6694bafd4b2023-09-03T13:19:57ZengIOP PublishingThe Astronomical Journal1538-38812022-01-01164519110.3847/1538-3881/ac8df2Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud SampleChow-Choong Ngeow0https://orcid.org/0000-0001-8771-7554Anupam Bhardwaj1https://orcid.org/0000-0001-6147-3360Matthew J. Graham2https://orcid.org/0000-0002-3168-0139Steven L. Groom3https://orcid.org/0000-0001-5668-3507Frank J. Masci4https://orcid.org/0000-0002-8532-9395Reed Riddle5https://orcid.org/0000-0002-0387-370XGraduate Institute of Astronomy, National Central University , 300 Jhongda Road, 32001 Jhongli, Taiwan ; cngeow@astro.ncu.edu.twINAF-Osservatorio astronomico di Capodimonte , Via Moiariello 16, I-80131 Napoli, ItalyDivision of Physics, Mathematics, and Astronomy, California Institute of Technology , Pasadena, CA 91125, USAIPAC, California Institute of Technology , 1200 E. California Boulevard, Pasadena, CA 91125, USAIPAC, California Institute of Technology , 1200 E. California Boulevard, Pasadena, CA 91125, USACaltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125, USAWe present the first gri -band period–luminosity (PL) and period–Wesenheit (PW) relations for the fundamental mode anomalous Cepheids. These PL and PW relations were derived from a combined sample of five anomalous Cepheids in globular cluster M92 and the Large Magellanic Cloud, both of which have distance accurate to ∼1% available from literature. Our g -band PL relation is similar to the B -band PL relation as reported in previous study. We applied our PL and PW relations to anomalous Cepheids discovered in dwarf galaxy Crater II, and found a larger but consistent distance modulus than the recent measurements based on RR Lyrae. Our calibrations of gri -band PL and PW relations, even though less precise due to small number of anomalous Cepheids, will be useful for distance measurements to dwarf galaxies.https://doi.org/10.3847/1538-3881/ac8df2Globular star clustersAnomalous Cepheid variable starsSky surveysDistance indicators |
| spellingShingle | Chow-Choong Ngeow Anupam Bhardwaj Matthew J. Graham Steven L. Groom Frank J. Masci Reed Riddle Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample The Astronomical Journal Globular star clusters Anomalous Cepheid variable stars Sky surveys Distance indicators |
| title | Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample |
| title_full | Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample |
| title_fullStr | Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample |
| title_full_unstemmed | Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample |
| title_short | Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample |
| title_sort | zwicky transient facility and globular clusters the period luminosity and period wesenheit relations for anomalous cepheids supplemented with large magellanic cloud sample |
| topic | Globular star clusters Anomalous Cepheid variable stars Sky surveys Distance indicators |
| url | https://doi.org/10.3847/1538-3881/ac8df2 |
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