J/A+A/514/A2 AKARI/HIP and AKARI/2MASS samples (Ita+, 2010)
AKARI's infrared view on nearby stars :
Using AKARI Infrared Camera All-Sky Survey, 2MASS, and Hipparcos catalogs.
Ita Y., Matsuura M., Ishihara D., Oyabu S., Takita S., Kataza H.,
Yamamura I., Matsunaga N., Tanabe T., Nakada Y., Fujiwara H., Wada T.,
Matsuhara T., Onaka. H.
<Astron. Astrophys. 514, A2 (2010)>
=2010A&A...514A...2I 2010A&A...514A...2I
ADC_Keywords: Stars, nearby ; Infrared sources ; Photometry, infrared
Keywords: stars: AGB and post-AGB - emission-line, Be - supergiants -
Wolf-Rayet - infrared: stars - YSOs, PMSs
Abstract:
The AKARI, a Japanese infrared space mission, has performed an All-Sky
Survey in six infrared-bands from 9 to 180um with higher spatial
resolutions and better sensitivities than the Infrared Astronomical
Satellite (IRAS).
We investigate the mid-infrared (9 and 18um) point source catalog
(PSC) obtained with the Infrared Camera (IRC) onboard AKARI, in order
to understand the infrared nature of the known objects and to identify
previously unknown objects.
Color-color diagrams and a color-magnitude diagram were plotted with
the AKARI-IRC PSC and other available all-sky survey catalogs. We
combined the Hipparcos astrometric catalog and the 2MASS all-sky
survey catalog with the AKARI-IRC PSC. We furthermore searched
literature and SIMBAD astronomical database for object types, spectral
types, and luminosity classes. We identified the locations of
representative stars and objects on the color-magnitude and
color-color diagram schemes. The properties of unclassified sources
can be inferred from their locations on these diagrams.
Description:
We cross-identified AKARI-Hipparcos and AKARI-2MASS combined catalogs
with the following astronomical catalogs using a tolerance radius of
3 arcsec:
(1) S-type stars, i.e., stars with surface carbon-to-oxygen number
ratio (C/O) close to unity: Stephenson (1984, Cat. III/168,
1990AJ....100..569S 1990AJ....100..569S), who list 1,412 sources;
(2) post-AGB stars: Szczerba et al. (2007, Cat. J/A+A/469/799), who
list 326 very likely post-AGB stars;
(3) planetary nebulae: Acker et al. (1994, Cat. V/84>), who list 1,143
sources;
(4) Wolf-Rayet stars: van der Hucht (2001, Cat. III/215), who list
226 sources;
(5) Be stars: Zhang et al (2005, Cat. J/other/NewA/10.325), who list
1,185 sources.
We further searched the SIMBAD database for known carbon stars, OH/IR
stars, PMS stars, and YSOs, by querying by object types of 'C*' ,
'OH*', 'pMS*', and 'Y*O', respectively. Also, M-type giants and
supergiants are extracted from the SIMBAD database by querying by
spectral types of 'M' and luminosity class of 'III (giants)' and 'I
(supergiants)', respectively. Occasionally, more than one object type
are found (within a search radius of 3 arcsec) for a single object in
the SIMBAD database. In those cases, we keep both of types. The
electronic tables for these data sets are provided.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 98 2764 *AKARI-Hipparcos samples with known object types,
with sources sorted by increasing order of
RA for each object type
table4.dat 99 10956 *AKARI-2MASS samples with known object types,
with sources sorted by increasing order of
RA for each object type
--------------------------------------------------------------------------------
Note on table3.dat, table4.dat: See Ishihara et al. (2010, Cat. II/297) for
description of the AKARI catalog.
--------------------------------------------------------------------------------
See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)
II/298 : AKARI/FIS All-Sky Survey Point Source Catalogues (ISAS/JAXA, 2010)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 10 F9.5 deg RAdeg Right ascension in AKARI catalog (J2000.0)
13- 21 F9.5 deg DEdeg Seclination in AKARI catalog (J2000.0)
23- 28 F6.3 mag S9W ?=99.999 S9W magnitude in the AKARI-vega system
30- 35 F6.3 mag e_S9W ?=99.999 Error in S9W magnitude in
AKARI-vega system
37- 42 F6.3 mag L18W ?=99.999 L18W magnitude in AKARI-vega system
44- 49 F6.3 mag e_L18W ?=99.999 Error in L18W magnitude in the
AKARI-vega system
51- 56 I6 --- HIP ID number in the Hipparcos (II/246) catalog
58- 63 F6.2 mas plx Parallax given in Hipparcos (II/246) catalog
65- 70 F6.2 mas e_plx Error in parallax given in Hipparcos catalog
72- 77 F6.3 mag Vmag V magnitude given in Hipparcos (II/246) catalog
79- 84 F6.3 mag B-V (B-V) color given in Hipparcos catalog,
van Leeuwen et al. (2007, Cat. I/311)
86- 91 F6.3 mag e_B-V Error in (B-V) color given in Hipparcos catalog
93- 98 A6 --- Type Knwon object type (G1)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 10 F9.5 deg RAdeg Right ascension in AKARI catalog (J2000.0)
13- 21 F9.5 deg DEdeg Seclination in AKARI catalog (J2000.0)
23- 28 F6.3 mag S9W ?=99.999 S9W magnitude in AKARI-vega system
30- 35 F6.3 mag e_S9W ?=99.999 Error in S9W magnitude in
AKARI-vega system
37- 42 F6.3 mag L18W ?=99.999 L18W magnitude in AKARI-vega system
44- 49 F6.3 mag e_L18W ?=99.999 Error in L18W magnitude in
AKARI-vega system
51- 56 F6.3 mag Jmag ?=99.999 2MASS (II/246) J magnitude
58- 63 F6.3 mag e_Jmag ?=99.999 Error in 2MASS J magnitude
66- 71 F6.3 mag Hmag ?=99.999 2MASS (II/246) H magnitude
73- 78 F6.3 mag e_Hmag ?=99.999 Error in 2MASS H magnitude
80- 85 F6.3 mag Ksmag ?=99.999 2MASS (II/246) Ks magnitude
87- 92 F6.3 mag e_Ksmag ?=99.999 Error in 2MASS Ks magnitude
94- 99 A6 --- Type Known object type (G1)
--------------------------------------------------------------------------------
Global Notes:
Note (G1): the object types are:
Carbon = C-type stars (stars with C/O>1)
S = S-type stars (stars with C/O=1)
PAGB = post-AGB star
PN = planetary nebula
WR = Wolf-Rayet star
Be = B-type stars with emission lines
MI = M-type supergiant
PMS = pre-main-sequence star
YSO = young stellar object
MIII = M-type giant
OH/IR = star with with OH maser enveloppe and stron IR emission
--------------------------------------------------------------------------------
Acknowledgements:
Yoshifusa Ita, yita(at)ir.isas.jaxa.jp
(End) Yoshifusa Ita [NAOJ, Japan], Patricia Vannier [CDS] 11-Mar-2010