2015A&A...577A.111K

Query : 2015A&A...577A.111K

2015A&A...577A.111K - Astronomy and Astrophysics, volume 577A, 111-111 (2015/5-1)

Revisiting the birth locations of pulsars B1929+10, B2020+28, and B2021+51.

KIRSTEN F., VLEMMINGS W., CAMPBELL R.M., KRAMER M. and CHATTERJEE S.

Abstract (from CDS):

We present new proper motion and parallax measurements obtained with the European VLBI Network (EVN) at 5GHz for the three isolated pulsars B1929+10, B2020+28, and B2021+51. For B1929+10 we combined our data with earlier VLBI measurements and confirm the robustness of the astrometric parameters of this pulsar. For pulsars B2020+28 and B2021+51 our observations indicate that both stars are almost a factor of two closer to the solar system than previously thought, placing them at a distance of 1.39_–0.06^+0.05 and 1.25_–0.17^+0.14kpc. Using our new astrometry, we simulated the orbits of all three pulsars in the Galactic potential with the aim to confirm or reject previously proposed birth locations. Our observations ultimately rule out a claimed binary origin of B1929+10 and the runaway star ζ Ophiuchi in Upper Scorpius. A putative common binary origin of B2020+28 and B2021+51 in the Cygnus Superbubble is also very unlikely.

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Journal keyword(s): pulsars: individual: B1929+10 - pulsars: individual: B2020+28 - pulsars: individual: B2021+51 - parallaxes - techniques: interferometric - proper motions

Simbad objects: 14

Full paper

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Number of rows : 14

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NAME Upper Sco Association	As*	16 12	-23.4						~	1269	1
2	* zet Oph	Be*	16 37 09.5390545	-10 34 01.529471	1.73	2.58	2.56	2.46	2.50	O9.2IVnn	1816	2
3	ICRF J192840.8+084848	Rad	19 28 40.85549	+08 48 48.4133						~	16	0
4	PSR B1929+10	Psr	19 32 14.0570	+10 59 33.380						~	731	0
5	ICRF J193435.0+104340	Rad	19 34 35.02549405	+10 43 40.3648764						~	12	0
6	PSR B1952+29	Psr	19 54 22.554	+29 23 17.29						~	136	0
7	NVSS J202045+282700	Rad	20 20 45.87027621	+28 26 59.1970222						~	10	1
8	PSR B2020+28	Psr	20 22 37.0671	+28 54 23.104						~	300	1
9	PSR B2021+51	Psr	20 22 49.8730	+51 54 50.233						~	260	1
10	4C 31.56	QSO	20 23 19.01734326	+31 53 02.3060318						~	107	1
11	ICRF J202355.8+542735	QSO	20 23 55.84397746	+54 27 35.8291002						~	35	1
12	NVSS J202525+502839	Rad	20 25 24.97251977	+50 28 39.5367101						~	11	0
13	NAME Cyg Superbubble	PoC	20 47	+41.2						~	77	1
14	3C 454.3	Bla	22 53 57.7480438728	+16 08 53.561508864		16.57	16.10	15.22		~	2739	2

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