Evaluation of the Corot candidate fields including secondary candidates for long runs

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Evaluation of the Corot candidate
fieldsincluding secondary candidates for long
runs

• Objectives
• Using Corotsky complementary information on
  secondary candidates,
• Go through the list of candidate fields (ref
  document january/04) in order to estimate to
  which extent
• information on Corot fields is sufficient to
  evaluate their scientific interest
• the present list can satisfy scientific
  expectations
• We can propose more precise fields
• eventually what should/could be added, how and
  when

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  Michel COROT field evaluation mai 04, IAS

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  Michel COROT fields evaluation mai 04 IAS

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HD49933HD49434
HD49933HD49434

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Field HD 49933 HD 49434
? 3 early Be stars outside the CCDs with this
position of the CCDs
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HD49933HD49434

• For this field, the objects of specific interest
  mentioned
• Primary cand. HD49933, HD49434
• HD50209 Be showing photometric variability with
  2 close periods
• HD 49385 (G) solar-like cand (Vsini7.5
  alph14mas,Mv3.67-
• 0.97,Teff5800K,Fe/H-0.11
  mV7.9
• HD49330 early Be (1 period)
• HD49585 early Be (1 period)
• RQ The rest of the objects available in the
  field should be useful to complete HR diagramme
  exploration for variability

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HD49933HD49434
HD49933HD49434
As an example, we scan the content of the field
for the following position of the CCDs

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HD49933HD49434

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HD49933HD49434
Selection aiming at HR diagramme coverage ?
Reasonably rich, but Fundamental parameters ?

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HD49933HD49434
Numerous objects with mVgt8 ? need for
complementary observations for parameters
determination. How when?

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HD43587
HD43587

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HD43587

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HD43587

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HD43587

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HD43587
Exo we used no constraints After discussion
with Magali low density in the south, i.e. go
rather north

• For this field, the objects of specific interest
  mentioned
• - Primary cand. HD43587
• HD43856 a solar-like cand.(F Vsini7.3km/s,alph1
  2.55,mV8,MV3.45-
• 1.21,Teff6100K,Fe/H-0.13
• - HD 44195 delta Sc slow rot.(F,Vsini58.3km/s,alp
  h10.78,mV7.56,MV2.72-
• 1.3,Tef6900K,Fe/H-0.25)
• - HD 44283 delta Scuti, slow rot (19km/s), TAMS
• - HD 43406 a B9 MS Hipp variable
• HD 43913 a new Be star
• HD 43285 Be star, weak phot. Var (Hipparcos) and
  spectro. Var (same period)
• RQ All these objects cannot be put together on
  the CCD, but 6 of them can, leading to choose
  between HD 43285 (Be), HD 44283 (d Scu) and HD
  43285 (Be)
• The rest of the objects available in the field
  should be useful to complete HR diagramme
  exploration for variability

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HD43587
HD43587
As an example, we scan the content of the field
for the following position of the CCDs

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HD43587
Selection aiming at HR diagramme coverage ?
Reasonably rich, but Fundamental parameters ?

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HD43587
Numerous objects with mVgt8 ? need for
complementary observations for parameters
determination. How when?

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HD52265
HD52265

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HD52265

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HD52265

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HD52265

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HD52265
Exowe used no special problem. Magali
suggestions in favor of the south for higher
density

• For this field, the objects of specific interest
  mentioned
• - Primary cand. HD52265
• HD51332 a solar-like cand.(F Vsini23.6km/s,
  alph10.9,
• mV7.12, MV2.31-1.22, Teff6958K,
  Fe/H0)
• - HD 50870 a d Scu (Vsini 17km/s) evolved ?
• - HD 51452 Be star (B0) (spectroscopic var, no
  photom)
• - HD 50891 Be (B0), phot. Var. (1 period)
• HD 51193 Be (B1), phot. Var. (1 period)
• HD 51404 Be, Var. (1 period)
• RQ The rest of the objects available in the
  field should be useful to complete HR diagramme
  exploration for variability

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HD52265
HD52265
As an example, we scan the content of the field
for the following position of the CCDs

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HD52265

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HD170580
HD170580

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HD170580

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HD170580

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HD170580

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HD170580

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HD170580

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Exo we used no special problem Magali rather
in favor of the north low density in the south
HD170580

• For this field, the objects of specific interest
  mentioned
• - Primary cand. HD170580 Beta Ceph
  (multiperiodic,,but multiple system)
• HD 170782 a d Scu (fast rotator, blue border)
• HD 170699 d Scu unevolved fast rot
• HD 170783 B Hipp var.
• HD 171219, Be
• HD 170987 solar-like cand. F Vsini 20.6km/s,
  alph10.75,
• mV7.5, MV2.66-1.59,
  Teff6500K, Fe/H-0.27)
• HD 170291 solar-like cand, F Vsini 11.9km/s,
  alph15.24,
• mV7.6, MV3.54-0.83,
  Teff6300K, Fe/H-0.23)
• RQ The rest of the objects available in the
  field should be useful to complete HR diagramme
  exploration for variability

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HD170580
HD170580
As an example, we scan the content of the field
for the following position of the CCDs

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HD170580
Not rich in CCD A2, but objects with mV lt8

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HD171834
HD171834

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HD171834

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HD171834

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Exo no special problem Magali confirms
HD171834

• For this field, the objects of specific interest
  mentioned
• - Primary cand. HD171834
• - HD 171951 (G)solar-like cand
• - HD 172675 (F) solar-like cand
• HD 172248 HGMN belonging a cluster
• HD 172189 dScu in eclipsing binary belonging to
  cluster
• - HD 170987 solar-like cand. F Vsini 20.6km/s,
  alph10.75,
• mV7.5, MV2.66-1.59,
  Teff6500K, Fe/H-0.27)
• HD 172961 solar-like cand. F, Vsini174,
  alph16.9,mV7.6,
• MV3.75-0.75, Teff6400K,
  Fe/H-0.42
• HD 171802 solar-like cand, F, Vsini14km/s,
  alph29, mV5.39,
• MV2.7-2.8, Teff6600,
  Fe/H0.11
• HD 170579, solar-like cand, F, Visni 13.5km/s,
  alph13.97, mV7.5,
• MV3.23-0.94, Teff6400K,
  Fe/H-0.24
• RQ The rest of the objects available in the
  field should be usefull to complete HR diagramme
  exploration for variability

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HD171834
HD171834
As an example, we scan the content of the field
for the following position of the CCDs

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HD171834

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HD177552
HD177552
179079

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HD177552
179079

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Exonorth too crowded
HD177552

• For this field, the objects of specific interest
  mentioned
• - Primary cand. HD177552
• HD 177206 A variable, but dScu ?
• HD 177880 MS B star.(for survey)
• HD 178065 HGMN
• HD 177284 Beta Lyrae ecl. Binary
• HD 179079, G, Vsini6.3km/s, alph15.7, mV7.96,
  MV3.94-0.81,
• Teff5500K, Fe/H-0.21 (geante)

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HD177552
HD177552
As an example, we scan the content of the field
for the following position of the CCDs
For information, content of the field for an
arbitrary position of the CCDs.

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HD177552

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HD181555HD180642
HD181555HD180642

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HD181555HD180642

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HD181555HD180642

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HD181555HD180642

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HD181555HD180642
Exo we used not very good, not too south,
After check with Magali very dense, to be
checked on specific position.

• For this field, the objects of specific interest
  mentioned
• Primary cand. HD 181555 delta Sc.
• Primary cand HD 180642 Beta Ceph, slow rot.
• HD 181906 (F) solar-like cand, Vsini18.2km/s,
  alph14, mV7.65,
• MV3.39-0.9, Teff6300K,
  Fe/H-0.32
• - HD 181420, solar-like cand, F, Vsini21.1km/s,
  alph20.21, mv6.57,
• MV3.1-0.63, Teff6300K,
  -0.13
• HD 181147 unevolved dScu
• HD 181527 Be/Am visual bina ???
• HD 181231 Be
• HD 181367 Be

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HD181555 HD 180642
HD181555HD180642
As an example, we scan the content of the field
for the following position of the CCDs

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HD181555HD180642

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THE LOWER PART OF THE INSTABILITY STRIP
the DSCT bookmarks
ZAMS 1 HD 181555 7.98 170 primary
target 2 HD 44195 7.57 58 HD43587
UNEVOLVED 3 HD 181147 8.74 ---
HD181555 4 HD 50870 8.86 17
HD52265 5 HD 170782 7.81 19 HD170580
6 HD 170699 6.95 gt200 HD170580 ZIGZAGS
(TAMS) 7 HD 44283 9.29 19 HD43587
8 HD 172189 8.85 EA HD171834
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12 B stars with accurate parameters
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HR diagram of Be secondary targets
in the CCDs
2 Be stars in the CCDs 2 Be stars
Real Location
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Conclusions

• Using Corotsky complementary informations on
  secondary candidates, exo-field criteria
• For each field 6-8 specific objects,
• among which 3-6 observable together
• to be completed to 10, for half of it with
• mVlt8 informations avaliables
• 8ltmVlt9.5 information not yet available
• can the present list can satisfy scientific
  expectations? Yes
• We can propose more precise fields Yes, SOON,
  for some of them
• Proposal for summer 04 based on available infos
  (seismoexo)
• eventually what should/could be added, how and
  when Stromgren photometry for complementary
  stars with mV-gt 9.5 available mid 2005,
• To confirm the choice

• 
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  Michel COROT field evaluation mai 04, IAS