2021RNAAS...5...18R

Query : 2021RNAAS...5...18R

2021RNAAS...5...18R - Research Notes of the AAS, 5, 18 (2021/January-0)

Backyard Worlds: Planet 9 Discovery of an Unusual Low-mass Companion to an M Dwarf at 80 pc.

ROTHERMICH A., SCHNEIDER A.C., FAHERTY J.K., ALLERS K., BARDALEZ-GAGLIUFFI D., MEISNER A.M., KUCHNER M., KIRKPATRICK J.D., CASELDEN D. and BEAULIEU P.

Abstract (from CDS):

We present the discovery of CWISE J203546.35-493611.0, a peculiar M8 companion to the M4.5 star APMPM J2036-4936 discovered through the citizen science project Backyard Worlds: Planet 9. Given CWISE J203546.35-493611.0's proper motion (μα, μδ) = (-126 ± 22, -478 ± 23) and angular separation of 342 from APMPM 2036-4936, we calculate a chance alignment probability of 1.15 × 10–6. Both stars in this system appear to be underluminous, and the spectrum obtained for CWISE J203546.35-493611.0 shows a triangular H band. Further study of this system is warranted to understand these peculiarities.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Low mass stars - Binary stars

Simbad objects: 12

goto Full paper

goto View the references in ADS

Number of rows : 12
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 J01423153+0523285 LM* 01 42 31.5178112201 +05 23 29.101048248       19.49   sdM7.5? 11 0
2 Cl* Melotte 22 KPNO 2 BD* 03 45 43.1616128256 +25 40 23.239779672         17.36 L0V 136 0
3 2MASS J12563716-0224522 BD* 12 56 37.1377931858 -02 24 52.266257764           esdL3.5 43 0
4 LP 271-25 LM* 14 28 43.2275214164 +33 10 39.259309081   21.2   17.8   M9Ve 262 0
5 LP 440-52 LM* 14 39 00.3086540071 +18 39 38.710151529   19.6 18.39 17.3 14.64 sdM7 68 0
6 VB 8 LM* 16 55 35.2557374336 -08 23 40.753073075   18.7 16.916 14.566 12.24 M7Ve 457 0
7 2MASS J17561080+2815238 BD* 17 56 10.7706488783 +28 15 23.454210794           sdL1 27 0
8 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1
9 2MASS J20354654-4936059 PM* 20 35 46.54680 -49 36 05.9148           ~ 1 0
10 APMPM J2036-4936 PM* 20 35 49.9626214598 -49 36 07.848611976     19.2     M4.5 4 0
11 HD 198546 * 20 53 08.5205598336 -51 42 57.376209564   7.16 7.11     A0Vn 10 0
12 SIPS J2130-0845 BD* 21 30 44.6489028062 -08 45 20.574092550       19.784 17.351 L1 51 1

To bookmark this query, right click on this link: simbad:objects in 2021RNAAS...5...18R and select 'bookmark this link' or equivalent in the popup menu