J/MNRAS/366/739 JHKs photometry of Hourglass nebula (Arias+, 2006)
The infrared Hourglass cluster in M8.
Arias J.I., Barba R.H., Maiz-Apellaniz J., Morrell N.I., Rubio M.
<Mon. Not. R. Astron. Soc., 366, 739-757 (2006)>
=2006MNRAS.366..739A 2006MNRAS.366..739A
ADC_Keywords: Nebulae ; Stars, pre-main sequence ; Photometry, infrared
Keywords: stars: formation - stars: pre-main-sequence - H II regions -
ISM: Herbig-Haro objects - ISM: jets and outflows
Abstract:
A detailed study of the Hourglass nebula in the M8 star-forming region
is presented. The study is mainly based on recent subarcsec-resolution
JHKs images taken at Las Campanas Observatory and complemented with
archival Hubble Space Telescope (HST) images and long-slit
spectroscopy retrieved from the European Southern Observatory Archive
Facility. Using the new numerical code CHORIZOS, we estimate the
distance to the earliest stars in the region to be 1.25kpc. Infrared
photometry of all the sources detected in the field is given.
Description:
J, H and Kshort (Ks) images of the Hourglass region were obtained on
1999 September 26, using the near-infrared camera IRCAM, attached to
the 2.5-m Du Pont Telescope at Las Campanas Observatory (LCO), Chile.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 98 763 Infrared sources in the field of the Hourglass Nebula
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ABMMR [1/763]+ Sequential number
5- 6 I2 h RAh Right ascension (J2000.0)
8- 9 I2 min RAm Right ascension (J2000.0)
11- 15 F5.2 s RAs Right ascension (J2000.0)
17 A1 --- DE- Declination sign (J2000.0)
18- 19 I2 deg DEd Declination (J2000.0)
21- 22 I2 arcmin DEm Declination (J2000.0)
24- 27 F4.1 arcsec DEs Declination (J2000.0)
29- 34 F6.3 mag Jmag ?=- J magnitude
36- 40 F5.3 mag e_Jmag ?=- rms uncertainty in Jmag
42- 47 F6.3 mag Hmag ?=- H magnitude
49- 53 F5.3 mag e_Hmag ?=- rms uncertainty in Hmag
55- 60 F6.3 mag Ksmag ?=- Ks magnitude
62- 66 F5.3 mag e_Ksmag ?=- rms uncertainty in Ksmag
68- 73 F6.3 mag J-H ?=- J-H colour index
75- 80 F6.3 mag H-Ks ?=- H-Ks colour index
82- 98 A17 --- Com Comment
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Sep-2006