TY - JOUR
T1 - Cataclysmic Variables in the First Year of the Zwicky Transient Facility
AU - Szkody, Paula
AU - Dicenzo, Brooke
AU - Ho, Anna Y.Q.
AU - Hillenbrand, Lynne A.
AU - Van Roestel, Jan
AU - Ridder, Margaret
AU - Dejesus Lima, Isabel
AU - Graham, Melissa L.
AU - Bellm, Eric C.
AU - Burdge, Kevin
AU - Kupfer, Thomas
AU - Prince, Thomas A.
AU - Masci, Frank J.
AU - Mróz, Przemyslaw J.
AU - Golkhou, V. Zach
AU - Coughlin, Michael
AU - Cunningham, Virginia A.
AU - Dekany, Richard
AU - Graham, Matthew J.
AU - Hale, David
AU - Kaplan, David
AU - Kasliwal, Mansi M.
AU - Miller, Adam A.
AU - Neill, James D.
AU - Patterson, Maria T.
AU - Riddle, Reed
AU - Smith, Roger
AU - Soumagnac, Maayane T.
N1 - Publisher Copyright:
© 2020. The American Astronomical Society. All rights reserved..
PY - 2020/5
Y1 - 2020/5
N2 - Using selection criteria based on amplitude, time, and color, we have identified 329 objects as known or candidate cataclysmic variables (CVs) during the first year of testing and operation of the Zwicky Transient Facility. Of these, 90 are previously confirmed CVs, 218 are strong candidates based on the shape and color of their light curves obtained during 3-562 days of observation, and the remaining 21 are possible CVs but with too few data points to be listed as good candidates. Almost half of the strong candidates are within 10 deg of the galactic plane, in contrast to most other large surveys that have avoided crowded fields. The available Gaia parallaxes are consistent with sampling the low mass transfer CVs, as predicted by population models. Our follow-up spectra have confirmed Balmer/helium emission lines in 27 objects, with four showing high-excitation He ii emission, including candidates for an AM CVn, a polar, and an intermediate polar. Our results demonstrate that a complete survey of the Galactic plane is needed to accomplish an accurate determination of the number of CVs existing in the Milky Way.
AB - Using selection criteria based on amplitude, time, and color, we have identified 329 objects as known or candidate cataclysmic variables (CVs) during the first year of testing and operation of the Zwicky Transient Facility. Of these, 90 are previously confirmed CVs, 218 are strong candidates based on the shape and color of their light curves obtained during 3-562 days of observation, and the remaining 21 are possible CVs but with too few data points to be listed as good candidates. Almost half of the strong candidates are within 10 deg of the galactic plane, in contrast to most other large surveys that have avoided crowded fields. The available Gaia parallaxes are consistent with sampling the low mass transfer CVs, as predicted by population models. Our follow-up spectra have confirmed Balmer/helium emission lines in 27 objects, with four showing high-excitation He ii emission, including candidates for an AM CVn, a polar, and an intermediate polar. Our results demonstrate that a complete survey of the Galactic plane is needed to accomplish an accurate determination of the number of CVs existing in the Milky Way.
UR - http://www.scopus.com/inward/record.url?scp=85086576256&partnerID=8YFLogxK
U2 - 10.3847/1538-3881/ab7cce
DO - 10.3847/1538-3881/ab7cce
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AN - SCOPUS:85086576256
SN - 0004-6256
VL - 159
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 198
ER -