VizieR Online Data Catalog: YMGs. I. Young binaries & lithium-rich stars (Bowler+, 2019)
Abstract
To better characterize our starting sample of 2060 activity-selected late-K and early-M dwarfs, we carried out a follow-up observational program to obtain low-resolution optical spectra of these targets using instruments in the northern and southern hemispheres, together with AO imaging with Robo-AO at the Palomar 60in (1.5m) telescope in the north. Altogether we acquired 762 optical spectra of 632 stars, plus an additional four nearby stars sharing common proper motions with targets in our sample. We also obtained 1523 AO images of 1011 stars to uncover and characterize close binaries.
Observations with the RC-Spectrograph mounted on the 4m Mayall telescope at Kitt Peak were carried out over eight nights on UT 2013 December 29-31, UT 2014 May 21-23, and UT 2015 June 16-17; instrument setup produced an average resolving power of R~2600 spanning 6200-9200Å. A total of 244 spectra were obtained for 168 stars with the Goodman High-Throughput Spectrograph at the Southern Astrophysical Research (SOAR) 4.1m telescope located on Cerro Pachon, Chile. The observations spanned nine nights on three observing runs: UT 2013 December 4-7, UT 2014 June 25-28, and UT 2015 February 16. We acquired low-resolution (R~1300) optical spectra for 40 stars on UT 2014 January 19 and 21 with the SuperNova Integral Field Spectrograph (SNIFS) at the University of Hawai'i's 88 in (2.2m) telescope located on Maunakea, Hawai'i. Our spectroscopic observations are detailed in Table 1. The 1523 adaptive optics images of 1011 targets from our parent sample of 2060 active stars were obtained with Robo-AO at the Palomar 60in (1.5m) telescope between 2013 July and 2015 June. See Section 3.4; details about our individual observations can be found in Table 2. (7 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- November 2020
- DOI:
- 10.26093/cds/vizier.18770060
- Bibcode:
- 2020yCat..18770060B
- Keywords:
-
- Stars: nearby;
- Stars: double and multiple;
- Stars: late-type;
- Spectra: optical;
- Equivalent widths;
- Spectral types;
- YSOs Radial velocities;
- Infrared sources;
- Proper motions