2024RNAAS...8...23P


Query : 2024RNAAS...8...23P

2024RNAAS...8...23P - Research Notes of the AAS, 8, 23 (2024/January-0)

Seventeen 2 Micron All Sky Survey (2MASS) Hypervelocity Stars (HVS) from Gaia DR3.

PARTHASARATHY M.

Abstract (from CDS):

As part of an ongoing search for hypervelocity stars I found seventeen two micron all sky survey sources with Gaia G magnitudes less than 16.0 and radial velocities less than -600 km s–1. All these stars are brighter in the K band when compared with their V and G magnitudes. Ten of these (including three carbon stars) are long period variable stars of Mira type. One is a relatively nearby high proper motion star and one is a very high galactic latitude chemically peculiar metal-poor star. It may be a galactic halo star. One star is a Kepler red giant, two stars may be cluster members and two are in the star-forming region (probably YSOs). It is not clear how these stars acquired such high radial velocities. Further study of these seventeen stars is needed.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Hypervelocity stars

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 2MASS J00504461+5824384 * 00 50 44.6180711760 +58 24 38.331115164           ~ 2 0
2 2MASS J02274456+6140299 Y*O 02 27 44.5662566352 +61 40 29.986953276     16.41 15.17 13.95 B3-6Ve 9 0
3 TYC 4047-1461-1 Y*O 02 47 53.3017957536 +60 44 28.519949508   11.99 11.79     B6.0 11 0
4 2MASS J07383691+3212208 PM* 07 38 36.9242864088 +32 12 20.690994204     14.287     ~ 5 0
5 2MASS J11220124+5309490 Pe* 11 22 01.2414028896 +53 09 49.150958400   15.0   12.9   ~ 6 0
6 2MASS J15003649-5529145 LP* 15 00 36.4863276110 -55 29 14.525426580           ~ 2 0
7 2MASS J17322853-3342336 LP? 17 32 28.5383697223 -33 42 33.616372886           ~ 2 0
8 OGLE BLG-LPV-251783 Mi* 17 50 00.2606524114 -15 42 22.246603042         11.968 ~ 4 0
9 2MASS J17502866-3242362 LP? 17 50 28.6606842653 -32 42 36.254888340           ~ 2 0
10 2MASS J17563584-2152290 LP? 17 56 35.8380217260 -21 52 29.103596129           ~ 2 0
11 2MASS J18084725-1403252 LP* 18 08 47.2573675482 -14 03 25.164323708           ~ 2 0
12 OGLE BLG-LPV-262377 Mi* 18 21 32.1238513822 -17 40 59.903784007         14.495 ~ 4 0
13 2MASS J18271007-1907365 LP? 18 27 10.0848584316 -19 07 36.611809134           ~ 2 0
14 2MASS J18443216+0253312 LP? 18 44 32.1666086347 +02 53 31.308201087           ~ 2 0
15 ZTF J192830.45+131230.3 Mi* 19 28 30.4606859494 +13 12 30.393111687           ~ 5 0
16 2MASS J19352291+4626156 * 19 35 22.9193937792 +46 26 15.664865928           G5III 5 0
17 2MASS J23470671+6311571 * 23 47 06.7113621504 +63 11 57.081660324           ~ 7 0

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