2016A&A...594A.116H

Query : 2016A&A...594A.116H

2016A&A...594A.116H - Astronomy and Astrophysics, volume 594A, 116-116 (2016/10-1)

HI4PI: a full-sky H I survey based on EBHIS and GASS.

HI4PI COLLABORATION, BEN BEKHTI N., FLOER L., KELLER R., KERP J., LENZ D., WINKEL B., BAILIN J., CALABRETTA M.R., DEDES L., FORD H.A., GIBSON B.K., HAUD U., JANOWIECKI S., KALBERLA P.M.W., LOCKMAN F.J., McCLURE-GRIFFITHS N.M., MURPHY T., NAKANISHI H., PISANO D.J. and STAVELEY-SMITH L.

Abstract (from CDS):

Context. Measurement of the Galactic neutral atomic hydrogen (HI) column density, N_HI, and brightness temperatures, T_B, is of high scientific value for a broad range of astrophysical disciplines. In the past two decades, one of the most-used legacy HI datasets has been the Leiden/Argentine/Bonn Survey (LAB).
Aims. We release the HI 4π survey (HI4PI), an all-sky database of Galactic HI, which supersedes the LAB survey.
Methods. The HI4PI survey is based on data from the recently completed first coverage of the Effelsberg-Bonn HI Survey (EBHIS) and from the third revision of the Galactic All-Sky Survey (GASS). EBHIS and GASS share similar angular resolution and match well in sensitivity. Combined, they are ideally suited to be a successor to LAB.
Results. The new HI4PI survey outperforms the LAB in angular resolution (th_FWHM=16.2) and sensitivity (σ_rms=43mK). Moreover, it has full spatial sampling and thus overcomes a major drawback of LAB, which severely undersamples the sky. We publish all-sky column density maps of the neutral atomic hydrogen in the Milky Way, along with full spectroscopic data, in several map projections including HEALPix.

Abstract Copyright: © ESO, 2016

Journal keyword(s): surveys - ISM: atoms - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/594/A116): nhi_eq.dat nhi_gal.dat NHI/* allsky_eq.dat allsky_gal.dat ALLSKY/* cubes_eq.dat cubes_gal.dat CUBES/* nhi_hpx.dat NHI_HPX.fits hpxspec.dat HPX/*>

Simbad objects: 9

Full paper

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Number of rows : 9

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Sp type	#ref 1850 - 2023	#notes
1	M 31	G	00 42 44.330	+41 16 07.50	4.86	4.36	3.44	~	12176	1
2	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2	~	10601	1
3	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72	~	5640	1
4	NAME Magellanic Clouds	GrG	03 00	-71.0				~	6633	1
5	NAME LMC	G	05 23 34.6	-69 45 22			0.4	~	16641	1
6	M 81	Sy2	09 55 33.1726556496	+69 03 55.062505368		7.89	6.94	~	4288	3
7	M 82	IG	09 55 52.430	+69 40 46.93	9.61	9.30	8.41	~	5703	6
8	NAME Draco Cloud	MoC	16 48 17	+60 11.8				~	69	1
9	SNR G030.8-00.0	SNR	18 47 32	-01 56.5				~	502	0

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