VizieR Online Data Catalog: Improved & expanded membership catalog for NGC752 (Agueros+, 2018)

Our work has added 125 new stars (using astrometric and photometric data from 2MASS and UCAC3) to the nearby open cluster NGC 752, reclassified five stars listed as nonmembers in the literature as cluster members, and extended NGC 752's membership to the mid-M stars. Conversely, we have removed 32 stars, or one-fifth of the merged Daniel+ (1994, J/PASP/106/281) and Mermilliod+ (1998, J/A+A/339/423) catalog, from the list of cluster members (see Table 2). The 258 cluster members are presented in Tables 3 and 4.

We had access to RV measurements for 123 candidate cluster members. These include RVs published by Daniel+ (1994, J/PASP/106/281) for 92 stars, as well as measurements for 76 stars shared with us by C. Pilachowski. For each of these 76 stars, ~15 spectra were obtained as part of a long-term monitoring campaign with the Hydra spectrograph on the WIYN 3.5m telescope, Kitt Peak, AZ.

We monitored NGC 752 from 2010 August 22 to 2011 January 19 using time allocated to two PTF Key Projects: the PTF Open Cluster Survey and the PTF/M-dwarfs survey. We used the robotic 48-inch Oschin (P48) telescope at Palomar Observatory, CA equipped with the modified CFH12K mosaic camera. Under typical conditions (1.1" seeing), it delivered 2" FWHM images that reached a 5σ limiting R_PTF ~21mag in 60s. We imaged two overlapping 3.5°x2.31° fields covering the center of NGC 752. In total, we obtained close to 400 observations for each field. See section 4.1.

We observed NGC 752 with the Hydra multi-object spectrograph the WIYN 3.5m telescope during the nights of 2011 February 7 and 8 (range between 6050 to 8950Å; R~4000) to obtain spectra for 96 stars. See section 5.1.

We used the MDM Observatory Modular Spectrograph (ModSpec) on the 2.4m Hiltner telescope to obtain spectra of 180 candidate cluster members over the course of five observing runs between 2010 December 1 and 2012 February 20 (range 4500-7500Å and R~3300). See section 5.2.

(5 data files).