2021ApJS..256...31L

Query : 2021ApJS..256...31L

2021ApJS..256...31L - Astrophys. J., Suppl. Ser., 256, 31-31 (2021/October-0)

Double- and triple-line spectroscopic candidates in the LAMOST Medium-Resolution Spectroscopic Survey.

LI C.-Q., SHI J.-R., YAN H.-L., FU J.-N., LI J.-D. and HOU Y.-H.

Abstract (from CDS):

The LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS) provides an unprecedented opportunity for detecting multiline spectroscopic systems. Based on the cross correlation function and successive derivatives, we search for spectroscopic binaries and triples and derive their radial velocities (RVs) from the LAMOST-MRS spectra. A Monte Carlo simulation is adopted to estimate the RV uncertainties. After examining over 1.3 million LAMOST DR7 MRS blue-arm spectra, we obtain 3133 spectroscopic binary (SB) and 132 spectroscopic triple (ST) candidates, which account for 1.2% of the LAMOST-MRS stars. Over 95% of the candidates are newly discovered. It is found that all of the ST candidates are on the main sequence, while around 10% of the SB candidates may have one or two components on the red giant branch.

Journal keyword(s): Spectroscopic binary stars - Catalogs - Radial velocity

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 1

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Number of rows : 1

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	HD 47775	*	06 41 02.3034295272	+19 47 05.280450720		9.41	9.19			A2	7	0

Query : 2021ApJS..256...31L

Basic data :

HD 47775 -- Star

* (HD,AG,...), NIR (2MASS)

06 41 02.3034295272 +19 47 05.280450720 (Optical) [ 0.0350 0.0472 90 ] A 2020yCat.1350....0G

06 38 04.8716227921 +19 49 57.633945973 [ 0.0350 0.0472 90 ]

194.0931171159821 +06.6819345691518 [ 0.0350 0.0472 90 ]

-3.549 -5.058 [0.045 0.035 90] A 2020yCat.1350....0G

1.0121 [0.0674] A 2020yCat.1350....0G

A2 E 1993yCat.3135....0C

B 9.41 [0.03] D 2000A&A...355L..27H

V 9.19 [0.03] D 2000A&A...355L..27H

G 9.120020 [0.002777] C 2020yCat.1350....0G

J 8.501 [0.019] C 2003yCat.2246....0C

H 8.497 [0.027] C 2003yCat.2246....0C

K 8.417 [0.018] C 2003yCat.2246....0C

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`HD 47775`	`GSC 01338-02139`	`SAO 95988`	`YZ 19 2314`
`AG+19 616`	`2MASS J06410230+1947053`	`TIC 195061493`	`Gaia DR2 3371776793126240512`
`BD+19 1435`	`PPM 122867`	`TYC 1338-2139-1`	`Gaia DR3 3371776793126240512`

References (7 between 1850 and 2026) (Total 7)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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`HD 47775`	`AG+19 616`	`BD+19 1435`	`GSC 01338-02139`	`2MASS J06410230+1947053`
`PPM 122867`	`SAO 95988`	`TYC 1338-2139-1`	`Gaia DR2 3371776793126240512`	`Gaia DR3 3371776793126240512`

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