2003AJ....125.2108P

C.D.S. - SIMBAD4 rel 1.7 - 2021.03.05CET17:11:51

2003AJ....125.2108P - Astron. J., 125, 2108-2122 (2003/April-0)

Looking into the Horsehead.

POUND M.W., REIPURTH B. and BALLY J.

Abstract (from CDS):

We present the first interferometric CO (1-0) map of the Horsehead Nebula, made with the Berkeley-Illinois-Maryland Association array. The map has an angular resolution of about 10", corresponding to about 0.02 pc. The CO form of the Horsehead closely matches its appearance in visible dust, with the CO emission dominated by a bright, thin ridge along its western side. The molecular cloud exhibits a pronounced velocity gradient of 5 km/s/pc from the northeast to the southwest, with the southwestern portion being redshifted. The mass of the cloud is 27 M_☉. We find an unusual U-shaped feature aligned with the ``horse's nose'' for which we discuss several interpretations. The northern portion of the U may trace a small outflow driven by the embedded young star B33-1. We discuss the formation, evolution, and ultimate fate of this well-known nebula.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: Globules - ISM: individual (Horsehead Nebula) - ISM: Kinematics and Dynamics - Stars: Formation

Nomenclature: Fig.11: [PRB2003] Source N (Nos 1-4).

CDS comments: Stars B33-1, B33-3, B33-4, B33-6 = [RB84] B33-1, 3, 4, 6 in SIMBAD. Paragr. 2, phase calibrator 0530-135 not identified.

Simbad objects: 15

Full paper

View the reference in ADS

Number of rows : 15

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	* sig Ori	Y*O	05 38 44.7665260139	-02 36 00.284709290	2.54	3.58	3.79	3.87	4.11	O9.5V	754	0
2	IRAS 05383-0228	Y*O	05 40 51.7279517128	-02 26 49.015215891					14.38	~	15	0
3	IRAS 05384-0229	FIR	05 40 56.8	-02 27 46						~	5	0
4	NAME Horsehead Nebula	DNe	05 40 59.0	-02 27 30						~	457	0
5	IC 434	HII	05 41	-02.5						~	79	1
6	IRAS 05386-0229	IR	05 41 11.2	-02 28 11						~	6	0
7	NAME Flame Nebula	HII	05 41 42.7	-01 54 44						~	692	1
8	NAME Ori B	MoC	05 41 43.0	-01 54 44						~	1213	0
9	LDN 1630	DNe	05 45.5	-00 59						~	356	0
10	BHR 71	MoC	12 01 36.810	-65 08 49.22						~	121	0
11	NAME BHR 71 MM	HII	12 01 37.1	-65 08 54						~	34	0
12	M 16	OpC	18 18 48	-13 48.4		6.58	6.0			~	957	2
13	[RB84] B33-3	*	~	~						~	1	0
14	[RB84] B33-4	*	~	~						~	1	0
15	[RB84] B33-6	*	~	~						~	1	0

To bookmark this query, right click on this link: simbad:objects in 2003AJ....125.2108P and select 'bookmark this link' or equivalent in the popup menu