2016AcA....66..293G


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST09:22:17

2016AcA....66..293G - Acta Astron., 66, 293-306 (2016/August-0)

High Proper Motion Objects toward the Inner Milky Way: Characterization of Newly Identified Nearby Stars from the VISTA Variables in the Via Lactea Survey.

GROMADZKI M., KURTEV R., BEAMIN J.C., TEKOLA A., RAMPHUL R., IVANOV V.D., MINNITI D., FOLKES S.L., VAISANEN P., KNIAZEV A.Y., BORISSOVA J., PARSONS S.G. and VILLANUEVA V.

Abstract (from CDS):

The census of the Solar neighborhood is still incomplete, as demonstrated by recent discoveries of many objects within 5-10 pc from the Sun. The area around the mid-plane and bulge of the Milky Way presents the most difficulties in searches for such nearby objects, and is therefore deficient in the known population. This is largely due to high stellar densities encountered. Spectroscopic, photometric and kinematic characterization of these objects allows better understanding of the local mass function, the binary fraction, and provides new interesting targets for more detailed studies. We report the spectroscopic follow-upand characterization of twelve bright high proper motion objects, identified from the VISTA Variables in Via Lactea survey(VVV). We used the 1.9-m telescope of the South African Astronomical Observatory (SAAO) for low-resolution optical spectroscopy and spectral classification, and the MPG/ESP 2.2-m telescope Fiber-fed Extended Range Optical Spectrograph (FEROS) high-resolution optical spectroscopy to obtain the radial and space velocities for three of them. Six of our objects have co-moving companions. We derived optical spectral types and photometric distances, and classified all of them as K and M dwarfs within 27-264 pc from the Sun. Finally, we found that one of the sources, VVV J141421.23-602326.1 (a co-moving companion ofVVV J141420.55-602337.1), appears to be a rare massive white dwarf located close to the ZZ Cet instability strip in the CMD and CC diagrams. Many of the objects in our list are interesting targets for exoplanet searches.

Abstract Copyright:

Journal keyword(s): Proper motions - Stars: low - mass - white dwarfs - binaries: visual - solar neighborhood - Techniques: spectroscopic

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 24

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Number of rows : 24

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 CD-34 6792 PM* 10 32 13.6185042385 -35 37 41.710291605   12.84 11.84     F:wl: 129 0
2 TYC 8982-1530-1 PM* 12 10 51.7891414247 -64 25 27.637433918   10.57 9.83     ~ 3 0
3 VVV J121433.35-640801.0 PM* 12 14 33.7284788469 -64 08 00.335619424           ~ 1 0
4 VVV J121436.36-640808.4 PM* 12 14 36.7638288651 -64 08 07.815885815           ~ 1 0
5 VVV J122701.70-634203.7 PM* 12 27 01.3058196991 -63 42 03.086891692   16.3   14.2 12.6 ~ 2 0
6 WG 22 WD* 12 38 49.7813250074 -49 48 00.218655097   14.14 13.96     DA4.2 210 0
7 VVV J130523.07-620002.4 PM* 13 05 23.4185256163 -62 00 01.725237695           ~ 1 0
8 L 148-36 PM* 13 23 54.6771625239 -62 03 21.996234012     13.053 12.679   ~ 3 0
9 VVV J140829.88-594823.5 PM* 14 08 30.1686300435 -59 48 23.453615795           ~ 2 0
10 VVV J140831.63-594834.3 PM* 14 08 31.8653402442 -59 48 34.169472506           ~ 1 0
11 CD-32 9927 * 14 11 46.3240134300 -33 03 14.379335532   10.793 10.444 10.12 10.106 A4 86 0
12 VVV J141420.55-602337.1 PM* 14 14 20.9103544846 -60 23 36.123010987   16.1   14.2 12.3 ~ 3 0
13 UPM J1414-6023B PM* 14 14 21.4917767362 -60 23 25.346907213   16.6   17.1 17.7 ~ 3 0
14 VVV J141513.65-591356.1 PM* 14 15 13.8748923884 -59 13 54.200913319           ~ 1 0
15 VVV J141718.30-595756.0 * 14 17 18.30 -59 57 56.0           ~ 1 0
16 2MASS J14171876-5957536 * 14 17 18.768 -59 57 53.66           ~ 1 0
17 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 601 0
18 2MASS J14500938-6036019 * 14 50 09.380 -60 36 01.90           ~ 1 0
19 LP 916-15 PM* 15 38 59.6477173130 -28 35 36.970418054   12.19 11.62     A 107 0
20 VVV J164621.64-420119.0 PM* 16 46 21.6781804915 -42 01 18.545896159           ~ 1 0
21 TYC 7875-141-1 PM* 16 46 22.1102503391 -42 01 17.874943924   12.10 11.71     ~ 1 0
22 VVV J164810.92-414014.9 PM* 16 48 11.0949793376 -41 40 10.920005740           ~ 3 0
23 CD-44 12736 PM* 18 36 25.9487430436 -44 18 36.919462094   10.83 10.22     G0 199 0
24 NAME Galactic Bulge reg ~ ~           ~ 3581 0

    Equat.    Gal    SGal    Ecl

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2021.05.16-09:22:17

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