[PIPE2D-382] Compute synthetic HSC magnitudes of the AMBRE templates Created: 07/Mar/19  Updated: 05/Apr/19  Resolved: 05/Apr/19

Status: Done
Project: DRP 2-D Pipeline
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: Masayuki Tanaka Assignee: Takuji Yamashita
Resolution: Done Votes: 0
Labels: flux-calibration
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: PNG File Colors_W04_pAMBRE_gTeff.png     PNG File Colors_W04_pAMBRE_zTeff.png    
Issue Links:
Relates
relates to PIPE2D-361 Select F-star candidates from the HSC... Done
Story Points: 4
Epic Link: flux calibration
Sprint: 2DDRP-2019 C

 Description   

In order to select F-stars, we need to locate them on a color-color diagram (likely gri).  We have the observed stellar sequence from HSC, and we want to overplot AMBRE stars to help choose the color selection criteria.

 Comments   
Comment by Takuji Yamashita [ 12/Mar/19 ]

I have computed the synthetic HSC magnitudes of F-stars in the AMBRE models. The calculated model magnitudes are overplotted on gri color-color diagrams with HSC stellar objects. Loci of the model magnitudes coincide with the observed sequence. Definition and selection of HSC F-stars will be done in PIPE2D-383 based on this work.

 

plan-parallel geometry models with surface gravity = 4.0 cm/s2 and [a/Fe] = 0.2.
Effective temperature (6000-7500 K) and [Fe/H] (-5.0 - 1.0) are variable in the figure.

 


plan-parallel geometry models with [Fe/H] = 0.0 and and [a/Fe] = 0.2.
Effective temperature (6000-7500 K) and surface gravity (3.5 - 5.0) are variable.

 

Criteria of HSC stellar objected (black dots) in these figures are as follows.
isprimary = 'T'
i_extendedness_value = 0
inputcount_value >= 3 for gr, >=5 for i
g_psfflux_mag < 23.0
gri_psfflux_flag = 'F'
gri_pixelflags_interpolatedcenter = 'F'
gri_pixelflags_saturatedcenter = 'F'
gri_pixelflags_crcenter = 'F'
gri_pixelflags_bad = 'F'
gri_pixelflags_suspectcenter = 'F'

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